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Dr. Dirk Ross Diefendorf, MD

Accepting New Patients

(5 Ratings)

Specializes in: Osteopathic Manipulative Medicine, Sports Medicine and Orthopedics/Orthopedic Surgery

Northwestern University, Feinberg School of Medicine

Professional interests include: partial knee replacement, foot injury, shoulder replacement, and more.

101 S Ellsworth Avenue Suite 607
San Mateo, CA 94401

(650) 347-0157

Dr. Dirk Ross Diefendorf, MD is an osteopath in San Mateo, CA specializing in osteopathic manipulative medicine, sports medicine and orthopedics/orthopedic surgery. He graduated from Northwestern University, Feinberg School of Medicine. Dr. Dirk Ross Diefendorf, MD is affiliated with Sutter Health.

Office Locations

101 S Ellsworth Avenue Suite 607
San Mateo, CA 94401

(650) 347-0157

(650) 347-0566

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101 South San Mateo Drive Suite 212
San Mateo, CA 94401

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Some issues Dr. Dirk Ross Diefendorf, MD can help you with:

Hip Replacement

Hip replacement is a surgical procedure to replace parts of the hip joint that are damaged by disease or injury. It is most often done to treat arthritis, a common condition that causes stiffness and pain in the joints. Surgery is used only after other, less invasive treatments have failed to work.

The type of hip replacement patients receive is based on their age and the extent of damage to their hip. The hip joint has two parts: the femoral head, or hip ball, and the acetabulum, or hip socket. The hip ball is located on the upper end of the femur (thigh bone), and the hip socket is part of the pelvis. Depending on whether one or both parts require replacement, patients may need one of the following procedures:

Partial hip replacement, which is generally recommended in the case of hip fractures or other hip injuries. If a patient is having a partial hip replacement, only the hip ball will be replaced.
Total hip replacement, which is often used to treat the hip joint when it has become damaged due to arthritis. Both the hip socket and hip ball are replaced.
Hip resurfacing, which is usually performed for younger patients. A hip resurfacing procedure reshapes the hip ball and only replaces its surface. This preserves more bone and makes future surgeries easier. If a patient is having a partial hip resurfacing, only the hip ball is resurfaced and replaced. If a patient is having a total hip resurfacing, the hip socket will be replaced as well.

During hip replacement surgery, an incision is made along the side of the hip. The surgeon may access the joint directly through this incision, or by using small tools and a lighted tube called an arthroscope to see and treat the joint. The diseased tissue is removed, and the bones are smoothed out and fitted with metal ends. The metal pieces may be cemented in place, or they may have a porous structure that encourages bone to grow into them and hold them securely. A smooth plastic cushion is placed between the two bones to replace the cartilage and allow the joint to move freely.

Hip replacement surgery takes one to two hours, and afterwards patients may stay in the hospital for several days. When patients go home, they will have to use a cane, walker, or crutches at first. Patients will likely have physical therapy to improve their ability to move with their new hip. After the first few weeks, light exercise such as bike riding or swimming will help them heal, but certain actions, such as climbing stairs or bending over at the waist, may be difficult at first. It will take several weeks before they can drive or return to work. Full recovery may take six to 12 months.

Musculoskeletal Problems

The musculoskeletal system refers collectively to the bones, joints, ligaments, muscles, and nerves. It is what gives the body structure and movement. Because this system encompasses so much of the body, musculoskeletal problems are extremely varied and can happen almost anywhere. There are musculoskeletal problems that affect only the joints, those that affect the bones, those that affect tendons and ligaments, and those that can happen in any area of the body but cause pain and numbness.

Joint problems include bursitis and arthritis. Bursitis is the inflammation of a fluid-filled sac cushion on the outside of a joint, causing symptoms including pain and swelling. Arthritis is the inflammation and damage of a joint due to wear and tear or disease. There are several treatments for arthritis, but if the damage progresses far enough, joint replacement may be necessary. In joint replacement, a metal or plastic implant is surgically placed within the joint to make movement easier.

Bone problems include scoliosis, fractures, and osteoporosis. Scoliosis is a curvature of the spine, making the normally straight spine look like a 'C' or 'S.' It is treated with braces or surgery. Osteoporosis is a disease that causes bones to weaken and break easily. It's most common in women, especially older women. Fully half of all women over 65 have osteoporosis. Fractures are any break in the bone. They can be a simple crack or a severe and complicated shatter. Osteoporosis causes fractures in people who have it, but other causes are trauma (such as a fall) or overuse.

Tendon and ligament problems most often result from injury or overuse. Two good examples are ligament tears and tendonitis. The most common ligament tear is the ACL tear in the knee. This ligament supports and stabilizes the knee and is most often torn during sports activities. Tendonitis happens when a tendon, which connects muscles and bones together, becomes irritated and inflamed. This happens most often in older patients who push their bodies too far, leading to pain and swelling. Treatment for both tendon and ligament problems usually includes rest, ice, and supporting the area to let it heal.

Pain and numbness problems can be caused by overuse, disease, an injury, or a compressed nerve. Lower back pain and carpal tunnel syndrome are two of the most common conditions patients encounter. Lower back pain may be caused by sore muscles that have been overworked, or an injury to the disks separating the vertebrae in the spine. Lower back pain usually goes away on its own within a few days, but it may require medical treatment depending on the cause. Carpal tunnel syndrome occurs when the nerve at the base of the palm becomes trapped or pinched. Symptoms include tingling, pain, numbness, or weakness in the hand. Treatment involves rest and sometimes steroid injections.

Because the musculoskeletal system involves so much of the body, problems here can be incredibly varied in their type and severity. Some musculoskeletal problems will go away on their own or only require rest, while others may require medication, physical therapy, or even surgery.

Shoulder Arthritis

Shoulder arthritis is a very common condition that causes pain, stiffness, or a grinding sensation in the shoulder. Some patients may hear a clicking or popping noise, and all symptoms are more noticeable when moving. Arthritis occurs when the cartilage that cushions joints becomes damaged.

Normally, when two bones come together inside a joint, they are separated by a layer of tough, smooth cartilage. The cartilage allows the bones to glide across each other, which makes movement easier. Cartilage can be damaged by an injury, by an illness such as rheumatoid arthritis, or by simple wear and tear (osteoarthritis). In the shoulder, the two joints most commonly affected are the AC joint (where the shoulder blade and collarbone connect at the outside edge of the shoulder), and the glenohumeral joint (where the arm bone meets the shoulder blade).

Treatment for shoulder arthritis may include:

Ice and rest
Exercise and physical therapy
Over-the-counter pain medications
Corticosteroid injections
Surgery

Surgical treatments include the removal of inflamed tissue and joint reconstruction. The type of arthritis and severity of the damage will determine which treatment is most appropriate.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Dirk Ross Diefendorf, MD treated as an osteopath in San Mateo, CA during 2012 were X-rays, musculoskeletal imaging, hip imaging and pelvic imaging.

Volume of procedures performed by Dr. Dirk Ross Diefendorf, MD for Medicare patients.

doctor visit	332
emergency care	12
hip imaging	36
joint surgery	11
lower extremity surgery	11
musculoskeletal imaging	36
pelvic imaging	21
reconstructive surgery	11
X-rays	57

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Dirk Ross Diefendorf, MD treated as an osteopath in San Mateo, CA during 2013 were X-rays, musculoskeletal imaging, hip imaging and pelvic imaging.

Volume of procedures performed by Dr. Dirk Ross Diefendorf, MD for Medicare patients.

doctor visit	413
hip imaging	57
musculoskeletal imaging	57
pelvic imaging	32
X-rays	89

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Dirk Ross Diefendorf, MD.

**Gender**
Male	90
Female	157

**Ethnicity**
Non-Hispanic White	211
Black	0
Hispanic	0
Asian	17
Other	0
Native American	0

**Age**
From 65 to 74	109
From 75 to 84	85
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Dirk Ross Diefendorf, MD in 2013

Hypertension	65
High Cholesterol	60
Stroke	4
Ischemic Heart Disease	27
Depression	17
Chronic Kidney Disease	19
Asthma	10
Osteoperosis	15
Atrial Fibrilation	9
Heart Failure	14
Chronic Obstructive Pulmonary Disease	11
Diabetes	23
Dementia	11
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Dirk Ross Diefendorf, MD treated as an osteopath in San Mateo, CA during 2014 were X-rays, musculoskeletal imaging, hip imaging and pelvic imaging.

Volume of procedures performed by Dr. Dirk Ross Diefendorf, MD for Medicare patients.

doctor visit	519
emergency care	29
hip imaging	58
joint surgery	11
lower extremity surgery	11
minimally invasive procedures	11
musculoskeletal imaging	58
pelvic imaging	32
reconstructive surgery	11
spinal procedures	11
X-rays	101

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Dirk Ross Diefendorf, MD.

**Gender**
Male	120
Female	164

**Ethnicity**
Non-Hispanic White	233
Black	0
Hispanic	22
Asian	18
Other	0
Native American	0

**Age**
From 65 to 74	124
From 75 to 84	91
85 and over	58
Less than 65	11

Conditions of Medicare patients treated by Dr. Dirk Ross Diefendorf, MD in 2014

Hypertension	67
High Cholesterol	59
Stroke	5
Ischemic Heart Disease	30
Depression	17
Chronic Kidney Disease	26
Asthma	6
Osteoperosis	13
Atrial Fibrilation	13
Heart Failure	16
Chronic Obstructive Pulmonary Disease	9
Diabetes	23
Dementia	9
Cancer	13

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Dirk Ross Diefendorf, MD treated as an osteopath in San Mateo, CA during 2015 were X-rays, musculoskeletal imaging, hip imaging and pelvic imaging.

Volume of procedures performed by Dr. Dirk Ross Diefendorf, MD for Medicare patients.

aspiration	16
doctor visit	524
emergency care	26
hip imaging	47
hospital care	34
injections	16
inpatient care	34
joint surgery	12
lower extremity surgery	12
minimally invasive procedures	12
musculoskeletal imaging	47
pelvic imaging	41
reconstructive surgery	12
X-rays	88

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Dirk Ross Diefendorf, MD.

**Gender**
Male	220
Female	376

**Ethnicity**
Non-Hispanic White	492
Black	0
Hispanic	36
Asian	42
Other	0
Native American	0

**Age**
From 65 to 74	262
From 75 to 84	194
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Dirk Ross Diefendorf, MD in 2015

Hypertension	67
High Cholesterol	57
Stroke	5
Ischemic Heart Disease	26
Depression	19
Chronic Kidney Disease	25
Asthma	9
Osteoperosis	20
Atrial Fibrilation	13
Heart Failure	14
Chronic Obstructive Pulmonary Disease	9
Diabetes	22
Dementia	8
Cancer	14

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Dirk Ross Diefendorf, MD treated as an osteopath in San Mateo, CA during 2016 were hospital care, inpatient care, immobilization and X-rays.

Volume of procedures performed by Dr. Dirk Ross Diefendorf, MD for Medicare patients.

doctor visit	517
hospital care	64
immobilization	14
inpatient care	64
pelvic imaging	13
X-rays	13

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Dirk Ross Diefendorf, MD.

**Gender**
Male	104
Female	211

**Ethnicity**
Non-Hispanic White	270
Black	0
Hispanic	0
Asian	22
Other	0
Native American	0

**Age**
From 65 to 74	138
From 75 to 84	97
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Dirk Ross Diefendorf, MD in 2016

Hypertension	67
High Cholesterol	57
Stroke	4
Ischemic Heart Disease	21
Depression	20
Chronic Kidney Disease	26
Asthma	14
Osteoperosis	18
Atrial Fibrilation	13
Heart Failure	15
Chronic Obstructive Pulmonary Disease	9
Diabetes	24
Dementia	12
Cancer	14

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Dirk Ross Diefendorf, MD treated as an osteopath in San Mateo, CA during 2017 were hospital care, inpatient care and emergency care.

Volume of procedures performed by Dr. Dirk Ross Diefendorf, MD for Medicare patients.

doctor visit	482
emergency care	20
hospital care	40
inpatient care	40

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Dirk Ross Diefendorf, MD.

**Gender**
Male	101
Female	171

**Ethnicity**
Non-Hispanic White	221
Black	0
Hispanic	13
Asian	24
Other	0
Native American	0

**Age**
From 65 to 74	129
From 75 to 84	92
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Dirk Ross Diefendorf, MD in 2017

Hypertension	63
High Cholesterol	52
Stroke	4
Ischemic Heart Disease	23
Depression	16
Chronic Kidney Disease	28
Asthma	8
Osteoperosis	21
Atrial Fibrilation	9
Heart Failure	13
Chronic Obstructive Pulmonary Disease	8
Diabetes	26
Dementia	12
Cancer	11

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Dirk Ross Diefendorf, MD treated as an osteopath in San Mateo, CA during 2018 were hospital care, inpatient care, aspiration and injections.

Volume of procedures performed by Dr. Dirk Ross Diefendorf, MD for Medicare patients.

aspiration	13
doctor visit	571
hospital care	27
injections	13
inpatient care	27

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Dirk Ross Diefendorf, MD.

**Gender**
Male	113
Female	185

**Ethnicity**
Non-Hispanic White	237
Black	0
Hispanic	17
Asian	30
Other	0
Native American	0

**Age**
From 65 to 74	133
From 75 to 84	100
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Dirk Ross Diefendorf, MD in 2018

Hypertension	63
High Cholesterol	55
Stroke	0
Ischemic Heart Disease	19
Depression	18
Chronic Kidney Disease	20
Asthma	6
Osteoperosis	14
Atrial Fibrilation	13
Heart Failure	12
Chronic Obstructive Pulmonary Disease	4
Diabetes	24
Dementia	11
Cancer	13

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Dirk Ross Diefendorf, MD treated as an osteopath in San Mateo, CA during 2019 were hospital care, inpatient care, aspiration and injections.

Volume of procedures performed by Dr. Dirk Ross Diefendorf, MD for Medicare patients.

aspiration	12
doctor visit	582
hospital care	39
injections	12
inpatient care	39

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Dirk Ross Diefendorf, MD.

**Gender**
Male	124
Female	180

**Ethnicity**
Non-Hispanic White	253
Black	0
Hispanic	0
Asian	26
Other	12
Native American	0

**Age**
From 65 to 74	142
From 75 to 84	92
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Dirk Ross Diefendorf, MD in 2019

Hypertension	64
High Cholesterol	59
Stroke	6
Ischemic Heart Disease	20
Depression	19
Chronic Kidney Disease	28
Asthma	7
Osteoperosis	15
Atrial Fibrilation	9
Heart Failure	12
Chronic Obstructive Pulmonary Disease	10
Diabetes	22
Dementia	10
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Dirk Ross Diefendorf, MD treated as an osteopath in San Mateo, CA during 2020 were hospital care and inpatient care.

Volume of procedures performed by Dr. Dirk Ross Diefendorf, MD for Medicare patients.

doctor visit	388
hospital care	19
inpatient care	19

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Dirk Ross Diefendorf, MD.

**Gender**
Male	84
Female	130

**Ethnicity**
Non-Hispanic White	174
Black	0
Hispanic	0
Asian	21
Other	0
Native American	0

**Age**
From 65 to 74	102
From 75 to 84	62
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Dirk Ross Diefendorf, MD in 2020

Hypertension	55
High Cholesterol	55
Stroke	0
Ischemic Heart Disease	23
Depression	17
Chronic Kidney Disease	20
Asthma	8
Osteoperosis	17
Atrial Fibrilation	12
Heart Failure	10
Chronic Obstructive Pulmonary Disease	6
Diabetes	19
Dementia	9
Cancer	11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Dirk Ross Diefendorf, MD treated as an osteopath in San Mateo, CA during 2021 were hospital care and inpatient care.

Volume of procedures performed by Dr. Dirk Ross Diefendorf, MD for Medicare patients.

doctor visit	481
hospital care	32
inpatient care	32

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Dirk Ross Diefendorf, MD.

**Gender**
Male	96
Female	140

**Ethnicity**
Non-Hispanic White	191
Black	0
Hispanic	0
Asian	19
Other	0
Native American	0

**Age**
From 65 to 74	103
From 75 to 84	81
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Dirk Ross Diefendorf, MD in 2021

Hypertension	65
High Cholesterol	62
Stroke	0
Ischemic Heart Disease	25
Depression	19
Chronic Kidney Disease	23
Asthma	7
Osteoperosis	21
Atrial Fibrilation	12
Heart Failure	14
Chronic Obstructive Pulmonary Disease	6
Diabetes	20
Dementia	12
Cancer	12

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

Volume of procedures performed by Dr. Dirk Ross Diefendorf, MD for Medicare patients.

doctor visit	461

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Dirk Ross Diefendorf, MD.

**Gender**
Male	103
Female	129

**Ethnicity**
Non-Hispanic White	187
Black	0
Hispanic	0
Asian	19
Other	0
Native American	0

**Age**
From 65 to 74	98
From 75 to 84	91
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Dirk Ross Diefendorf, MD in 2022

Hypertension	66
High Cholesterol	74
Stroke	7
Ischemic Heart Disease	22
Depression	9
Chronic Kidney Disease	18
Asthma	9
Osteoperosis	21
Atrial Fibrilation	13
Heart Failure	13
Chronic Obstructive Pulmonary Disease	6
Diabetes	19
Dementia	5
Cancer	10

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Dirk Ross Diefendorf, MD for Medicare patients.

The highest averages for the top procedures that Dr. Dirk Ross Diefendorf, MD treated as an osteopath in San Mateo, CA were X-rays, musculoskeletal imaging, hip imaging and inpatient care.

aspiration	13
doctor visit	479
emergency care	21
hip imaging	49
hospital care	36
immobilization	14
injections	13
inpatient care	36
joint surgery	11
lower extremity surgery	11
minimally invasive procedures	11
musculoskeletal imaging	49
pelvic imaging	27
reconstructive surgery	11
spinal procedures	11
X-rays	69

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Dirk Ross Diefendorf, MD.

**Gender**
Female	167
Male	105

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	21
Non-Hispanic White	224
Native American / Alaskan Native	0
Hispanic	8
Other	1

**Age**
85 and over	5
75 to 84	89
Less than 65	1
65 to 74	121

Average of Total of Conditions of Medicare patients treated by Dr. Dirk Ross Diefendorf, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Dirk Ross Diefendorf, MD treated were hypertension, high cholesterol, chronic kidney disease and ischemic heart disease.

Hypertension	58
High Cholesterol	53
Stroke	3
Ischemic Heart Disease	21
Depression	15
Chronic Kidney Disease	21
Asthma	7
Osteoporosis	15
Heart Failure	12
Chronic Obstructive Pulmonary Disease	7
Diabetes	20
Atrial Fibrillation	10
Dementia	9
Cancer	11

Education & Training

Dr. Dirk Ross Diefendorf, MD graduated from Northwestern University, Feinberg School of Medicine. He completed residency at University of Southern California (USC) Affiliated Hospitals. He is certified by the Orthopedic Surgery - Board Certified and has a state license in California.

Medical School: Northwestern University, Feinberg School of Medicine

Residency: University of Southern California (USC) Affiliated Hospitals

Board Certification: Orthopedic Surgery - Board Certified

Licensed In: California

Affiliations & Hospitals

Dr. Dirk Ross Diefendorf, MD is associated with these hospitals and organizations:

Sutter Health

Insurance Information

Please note: Insurance information may change at any time, and the provider may accept your insurance plan even if it is not listed below. Please contact the provider's office to confirm that your insurance is accepted.

Dr. Dirk Ross Diefendorf, MD appears to accept the following insurance providers: Cigna, Medicare Advantage, Blue Shield of California, Anthem Blue Cross of California, United Healthcare, Accepted Sutter Health Plan Plans: Individual and Family Plan HMO: Large and Small Group HMO, Accepted Health Net Plans: ELECT Open Access POS, Large and Small Group: ELECT POS, Large and Small Group: Health Net HMO: Large Group (101+ employees) & Small Group (2-100 employees): Health Net... and Accepted Aetna Plans: Aetna Value Network HMO (AVN).

Insurance Accepted by Provider includes:

According to our sources, Dr. Dirk Ross Diefendorf, MD accepts the following insurance providers:

Cigna

Medicare Advantage

Blue Shield of California

Anthem Blue Cross of California

United Healthcare

Accepted Sutter Health Plan Plans: Individual and Family Plan HMO: Large and Small Group HMO

Accepted Health Net Plans: ELECT Open Access POS, Large and Small Group: ELECT POS, Large and Small Group: Health Net HMO: Large Group (101+ employees) & Small Group (2-100 employees): Health Net...

Accepted Aetna Plans: Aetna Value Network HMO (AVN)

Ratings & Reviews

Dr. Dirk Ross Diefendorf, MD has a high overall rating with an average of 4.2 out of 5 stars based on 5 ratings. We collect ratings and reviews of Dr. Dirk Ross Diefendorf, MD from all over the web to help you find the right in San Mateo, CA.

4.2

Overall Rating

(5 Ratings)

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General Payments

These charts describe general payments received by Dr. Dirk Ross Diefendorf, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Zimmer Biomet Holdings, Inc.	$254 Persona $127	Persona MC $127
Stryker Corporation	$193 Mako $150	TRAUMA & EXTREMITIES $42
Medtronic Xomed, Inc.	$37 Advanced Energy Hemostatis Device $37
Tornier, Inc.	$28 DEV - Ascend Flex $14	$14
Tenex Health Inc.	$12 $12
Other	$11 Joint Fluid Therapy $11

**Types of Payments**
Food and Beverage	$535

Biography

Dr. Dirk Diefendorf practices osteopathic manipulative medicine, orthopedics/orthopedic surgery, and sports medicine. He obtained his medical school training at Northwestern University, Feinberg School of Medicine and performed his residency at a hospital affiliated with the University of Southern California (USC). These areas are among his clinical interests: meniscus repair, knee arthritis, and elbow pain. Patient reviews placed Dr. Diefendorf at an average of 4.0 stars (out of 5). He accepts Blue Shield, Anthem, Blue California, and more. In addition to English, Dr. Diefendorf speaks Spanish. He is affiliated with Sutter Health. According to Sutter Health, he is currently accepting new patients at his office in San Mateo, CA.