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Dr. Michael U. Yap, MD

Accepting New Patients

(Dr. Michael Uy Yap, M.D.)

(No ratings)

Specializes in: Adult Nephrology

American University of the Caribbean School of Medicine (2007)

Professional interests include: cardiorenal syndrome, kidney problems, diabetes insipidus, and more.

1310 West Stewart Drive Suite 402
Orange, CA 92868

(714) 502-5550

Dr. Michael U. Yap, MD is a nephrologist in Orange, CA specializing in adult nephrology. He graduated from American University of the Caribbean School of Medicine in 2007 and has 19 years of experience. Dr. Michael U. Yap, MD is affiliated with Providence, Providence Medical Foundation, Mission Hospital Laguna Beach, Mission Hospital Mission Viejo, Providence Affiliated Physicians, St. Joseph and St. Joseph Hospital (Orange).

Office Locations

1310 West Stewart Drive Suite 402
Orange, CA 92868

(714) 502-5550

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500 S Main Street Suite 101
Orange, CA 92868

(657) 231-2099

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721 W 1st Street
Tustin, CA 92780

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Some issues Dr. Michael U. Yap, MD can help you with:

Dialysis

Dialysis is a procedure that replicates renal (kidney) function by filtering patients' blood. When kidneys do not work properly, waste can accumulate in the blood and unbalanced chemicals can impair the body's critical functions. In order to stay healthy, a person without proper kidney function must receive dialysis. There are two forms of dialysis treatment: hemodialysis and peritoneal dialysis. Both forms of dialysis are recurring treatments that in many cases last throughout the lifetime of the affected patient. Patients who briefly lose renal function may slowly reduce the frequency of dialysis sessions until their kidneys recover. However, most patients who start on dialysis remain on dialysis for the rest of their lives or until they receive a kidney transplant.

A number of conditions can worsen renal function and lead to end-stage or acute kidney failure. When kidneys fail (i.e. nearly 90 percent of their function is lost), dialysis is typically prescribed. Conditions that cause chronic kidney failure (eventually requiring dialysis) include:

Type 1 and 2 Diabetes
Pyelonephritis, recurring kidney infection
Glomerulonephritis, inflammation of the kidney's filtering parts
Polycystic kidney disease
Interstitial nephritis, inflammation of the kidney's tubules
High blood pressure
Vesicoureteral reflux, improper bladder emptying

For hemodialysis (the more common form of dialysis), a patient will visit a hospital or clinic and be connected to a dialysis machine by a needle attached to a tube that draws blood from the arm. The drawn blood is transferred to the dialysis machine, where it is filtered and separated until clean. Waste products from the blood pass into a fluid called dialysate, which is pumped out of the machine into a waste receptacle. The machine also measures and helps ensure the blood has the appropriate level of fluid, electrolytes, and pH. A tube delivers the cleaned blood back into the patient's body. A dialysis session like this will typically last for three to four hours, with a patient undergoing dialysis around three times per week.

A second method of dialysis is known as peritoneal dialysis. Unlike hemodialysis, peritoneal dialysis can be performed at home by oneself after an initial surgery. To start, a physician (generally a surgeon) will make a small incision in the lower abdomen and insert and surgically attach a catheter (thin tube). At home, the patient connects a pump to the abdomen catheter, delivering dialysate (dialysis fluid) from a bag hanging on a wheeled stand. This fluid enters the peritoneal cavity (greater abdomen area containing the stomach, liver, and intestines) and collects waste through osmosis, where waste in the blood moves across a membrane and into the dialysate. This process continues for several hours until the fluid concentration is equal between the blood and dialysate, at which point the fluid can be drained. The fluid can then be passed through a machine called a cycler, which removes waste and allows for the dialysate to be reused. This process is repeated about four times per day. Dialysis patients must limit the amount of fluid they consume prior to receiving dialysis and should also avoid eating salty foods. The cycler cannot filter more than a certain amount of waste products from the blood.

Kidneys are important organs, and dialysis treatments are vital for those with renal dysfunction. For many, dialysis is not so much a medical procedure but a part of their normal life.

Noteworthy Medicare Patient Procedures Performed by Dr. Michael U. Yap, MD in 2024

Click on any procedure below to see further details on volume and pricing among Medicare patients.

Top 25%

By Volume:

inpatient hospital care

In 2012, Dr. Michael U. Yap, MD performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 75% of providers in related specialties within California.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Volume of procedures performed by Dr. Michael U. Yap, MD for Medicare patients.

doctor visit	12

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Michael U. Yap, MD treated as a nephrologist in Orange, CA during 2013 were hospital care and inpatient care.

Volume of procedures performed by Dr. Michael U. Yap, MD for Medicare patients.

doctor visit	614
hospital care	943
inpatient care	943

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael U. Yap, MD.

**Gender**
Male	186
Female	235

**Ethnicity**
Non-Hispanic White	402
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	99
From 75 to 84	148
85 and over	146
Less than 65	28

Conditions of Medicare patients treated by Dr. Michael U. Yap, MD in 2013

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	61
Depression	25
Chronic Kidney Disease	75
Asthma	10
Osteoperosis	19
Atrial Fibrilation	26
Heart Failure	43
Chronic Obstructive Pulmonary Disease	30
Diabetes	44
Dementia	24
Cancer	15

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Michael U. Yap, MD treated as a nephrologist in Orange, CA during 2014 were hospital care and inpatient care.

Volume of procedures performed by Dr. Michael U. Yap, MD for Medicare patients.

doctor visit	553
hospital care	934
inpatient care	934

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael U. Yap, MD.

**Gender**
Male	203
Female	259

**Ethnicity**
Non-Hispanic White	436
Black	11
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	134
From 75 to 84	155
85 and over	129
Less than 65	44

Conditions of Medicare patients treated by Dr. Michael U. Yap, MD in 2014

Hypertension	75
High Cholesterol	75
Stroke	11
Ischemic Heart Disease	65
Depression	34
Chronic Kidney Disease	75
Asthma	12
Osteoperosis	20
Atrial Fibrilation	25
Heart Failure	45
Chronic Obstructive Pulmonary Disease	33
Diabetes	47
Dementia	25
Cancer	18

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Michael U. Yap, MD treated as a nephrologist in Orange, CA during 2015 were hospital care and inpatient care.

Volume of procedures performed by Dr. Michael U. Yap, MD for Medicare patients.

hospital care	633
inpatient care	633

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael U. Yap, MD.

**Gender**
Male	190
Female	266

**Ethnicity**
Non-Hispanic White	432
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	100
From 75 to 84	184
85 and over	138
Less than 65	34

Conditions of Medicare patients treated by Dr. Michael U. Yap, MD in 2015

Hypertension	75
High Cholesterol	75
Stroke	27
Ischemic Heart Disease	66
Depression	37
Chronic Kidney Disease	70
Asthma	29
Osteoperosis	25
Atrial Fibrilation	34
Heart Failure	51
Chronic Obstructive Pulmonary Disease	41
Diabetes	42
Dementia	39
Cancer	23

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Michael U. Yap, MD treated as a nephrologist in Orange, CA during 2016 were hospital care and inpatient care.

Volume of procedures performed by Dr. Michael U. Yap, MD for Medicare patients.

hospital care	467
inpatient care	467

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael U. Yap, MD.

**Gender**
Male	73
Female	123

**Ethnicity**
Non-Hispanic White	183
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	76
85 and over	71
Less than 65	0

Conditions of Medicare patients treated by Dr. Michael U. Yap, MD in 2016

Hypertension	75
High Cholesterol	75
Stroke	15
Ischemic Heart Disease	72
Depression	43
Chronic Kidney Disease	73
Asthma	38
Osteoperosis	26
Atrial Fibrilation	38
Heart Failure	51
Chronic Obstructive Pulmonary Disease	37
Diabetes	40
Dementia	41
Cancer	15

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Michael U. Yap, MD treated as a nephrologist in Orange, CA during 2017 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Michael U. Yap, MD for Medicare patients.

hospital care	69
inpatient care	58
outpatient care	11

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael U. Yap, MD.

**Gender**
Male	36
Female	39

**Age**
From 65 to 74	24
From 75 to 84	30
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Michael U. Yap, MD in 2017

Hypertension	75
High Cholesterol	67
Stroke	20
Ischemic Heart Disease	49
Depression	45
Chronic Kidney Disease	61
Asthma	0
Osteoperosis	16
Atrial Fibrilation	24
Heart Failure	44
Chronic Obstructive Pulmonary Disease	28
Diabetes	41
Dementia	36
Cancer	19

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Michael U. Yap, MD treated as a nephrologist in Orange, CA during 2018 were hospital care, inpatient care and dialysis.

Volume of procedures performed by Dr. Michael U. Yap, MD for Medicare patients.

dialysis	23
doctor visit	39
hospital care	531
inpatient care	531

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael U. Yap, MD.

**Gender**
Male	87
Female	108

**Ethnicity**
Non-Hispanic White	79
Black	0
Hispanic	35
Asian	67
Other	0
Native American	0

**Age**
From 65 to 74	58
From 75 to 84	61
85 and over	37
Less than 65	39

Conditions of Medicare patients treated by Dr. Michael U. Yap, MD in 2018

Hypertension	75
High Cholesterol	73
Stroke	15
Ischemic Heart Disease	64
Depression	33
Chronic Kidney Disease	75
Asthma	11
Osteoperosis	15
Atrial Fibrilation	21
Heart Failure	59
Chronic Obstructive Pulmonary Disease	31
Diabetes	63
Dementia	36
Cancer	9

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Michael U. Yap, MD treated as a nephrologist in Orange, CA during 2019 were hospital care, inpatient care and dialysis.

Volume of procedures performed by Dr. Michael U. Yap, MD for Medicare patients.

dialysis	55
doctor visit	91
hospital care	1174
inpatient care	1174

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael U. Yap, MD.

**Gender**
Male	177
Female	143

**Ethnicity**
Non-Hispanic White	143
Black	0
Hispanic	66
Asian	91
Other	0
Native American	0

**Age**
From 65 to 74	94
From 75 to 84	102
85 and over	65
Less than 65	59

Conditions of Medicare patients treated by Dr. Michael U. Yap, MD in 2019

Hypertension	75
High Cholesterol	75
Stroke	16
Ischemic Heart Disease	66
Depression	36
Chronic Kidney Disease	75
Asthma	12
Osteoperosis	16
Atrial Fibrilation	28
Heart Failure	65
Chronic Obstructive Pulmonary Disease	35
Diabetes	67
Dementia	37
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Michael U. Yap, MD treated as a nephrologist in Orange, CA during 2020 were hospital care, inpatient care and dialysis.

Volume of procedures performed by Dr. Michael U. Yap, MD for Medicare patients.

dialysis	23
doctor visit	117
hospital care	1612
inpatient care	1612

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael U. Yap, MD.

**Gender**
Male	203
Female	180

**Ethnicity**
Non-Hispanic White	173
Black	12
Hispanic	82
Asian	103
Other	13
Native American	0

**Age**
From 65 to 74	114
From 75 to 84	120
85 and over	88
Less than 65	61

Conditions of Medicare patients treated by Dr. Michael U. Yap, MD in 2020

Hypertension	75
High Cholesterol	75
Stroke	15
Ischemic Heart Disease	68
Depression	37
Chronic Kidney Disease	75
Asthma	13
Osteoperosis	15
Atrial Fibrilation	23
Heart Failure	65
Chronic Obstructive Pulmonary Disease	31
Diabetes	66
Dementia	34
Cancer	13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Michael U. Yap, MD treated as a nephrologist in Orange, CA during 2021 were hospital care and inpatient care.

Volume of procedures performed by Dr. Michael U. Yap, MD for Medicare patients.

doctor visit	300
hospital care	1287
inpatient care	1287

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael U. Yap, MD.

**Gender**
Male	220
Female	199

**Ethnicity**
Non-Hispanic White	148
Black	14
Hispanic	86
Asian	160
Other	11
Native American	0

**Age**
From 65 to 74	134
From 75 to 84	139
85 and over	81
Less than 65	65

Conditions of Medicare patients treated by Dr. Michael U. Yap, MD in 2021

Hypertension	75
High Cholesterol	75
Stroke	16
Ischemic Heart Disease	64
Depression	31
Chronic Kidney Disease	75
Asthma	12
Osteoperosis	17
Atrial Fibrilation	21
Heart Failure	56
Chronic Obstructive Pulmonary Disease	28
Diabetes	62
Dementia	34
Cancer	10

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Michael U. Yap, MD treated as a nephrologist in Orange, CA during 2022 were hospital care and inpatient care.

Volume of procedures performed by Dr. Michael U. Yap, MD for Medicare patients.

doctor visit	246
hospital care	1433
inpatient care	1433

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael U. Yap, MD.

**Gender**
Male	208
Female	207

**Ethnicity**
Non-Hispanic White	160
Black	0
Hispanic	109
Asian	117
Other	17
Native American	0

**Age**
From 65 to 74	105
From 75 to 84	133
85 and over	103
Less than 65	74

Conditions of Medicare patients treated by Dr. Michael U. Yap, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	25
Ischemic Heart Disease	52
Depression	30
Chronic Kidney Disease	75
Asthma	17
Osteoperosis	21
Atrial Fibrilation	38
Heart Failure	52
Chronic Obstructive Pulmonary Disease	28
Diabetes	58
Dementia	25
Cancer	21

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Michael U. Yap, MD treated as a nephrologist in Orange, CA during 2023 were hospital care and inpatient care.

Volume of procedures performed by Dr. Michael U. Yap, MD for Medicare patients.

doctor visit	110
hospital care	1009
inpatient care	1009

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael U. Yap, MD.

**Gender**
Male	157
Female	132

**Ethnicity**
Non-Hispanic White	114
Black	0
Hispanic	76
Asian	77
Other	0
Native American	0

**Age**
From 65 to 74	77
From 75 to 84	85
85 and over	77
Less than 65	50

Conditions of Medicare patients treated by Dr. Michael U. Yap, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	24
Ischemic Heart Disease	53
Depression	32
Chronic Kidney Disease	75
Asthma	11
Osteoperosis	15
Atrial Fibrilation	37
Heart Failure	58
Chronic Obstructive Pulmonary Disease	26
Diabetes	64
Dementia	24
Cancer	22

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Michael U. Yap, MD treated as a nephrologist in Orange, CA during 2024 were hospital care and inpatient care.

Volume of procedures performed by Dr. Michael U. Yap, MD for Medicare patients.

doctor visit	32
hospital care	1174
inpatient care	1174

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael U. Yap, MD.

**Gender**
Male	111
Female	67

**Ethnicity**
Non-Hispanic White	75
Black	0
Hispanic	63
Asian	27
Other	0
Native American	0

**Age**
From 65 to 74	54
From 75 to 84	47
85 and over	32
Less than 65	45

Conditions of Medicare patients treated by Dr. Michael U. Yap, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	27
Ischemic Heart Disease	55
Depression	39
Chronic Kidney Disease	75
Asthma	11
Osteoperosis	13
Atrial Fibrilation	37
Heart Failure	57
Chronic Obstructive Pulmonary Disease	22
Diabetes	70
Dementia	25
Cancer	18

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Michael U. Yap, MD for Medicare patients.

The highest averages for the top procedures that Dr. Michael U. Yap, MD treated as a nephrologist in Orange, CA were hospital care, inpatient care, dialysis and outpatient care.

dialysis	33
doctor visit	211
hospital care	938
inpatient care	937
outpatient care	11

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Michael U. Yap, MD.

**Gender**
Male	142
Female	150

**Ethnicity**
Black / African American	2
Asian / Pacific Islander	49
Non-Hispanic White	180
Native American / Alaskan Native	0
Hispanic	39
Other	3

**Age**
75 to 84	98
85 and over	74
Less than 65	38
65 to 74	76

Average of Total of Conditions of Medicare patients treated by Dr. Michael U. Yap, MD From 2012 - 2024

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

Hypertension	69
High Cholesterol	68
Stroke	17
Ischemic Heart Disease	56
Depression	32
Chronic Kidney Disease	67
Asthma	13
Osteoporosis	16
Heart Failure	49
Chronic Obstructive Pulmonary Disease	28
Diabetes	51
Atrial Fibrillation	27
Dementia	29
Cancer	15

Education & Training

Dr. Michael U. Yap, MD graduated from American University of the Caribbean School of Medicine in 2007. He completed residency at Maricopa Medical Center. He is certified by the American Board of Internal Medicine, Nephrology and has a state license in California.

Medical School: American University of the Caribbean School of Medicine (2007)

Residency: Maricopa Medical Center (2010)

Board Certification: American Board of Internal Medicine, Nephrology

Licensed In: California

Affiliations & Hospitals

Dr. Michael U. Yap, MD is associated with these hospitals and organizations:

Providence

Providence Medical Foundation

Mission Hospital Laguna Beach

Mission Hospital Mission Viejo

Providence Affiliated Physicians, St. Joseph

St. Joseph Hospital (Orange)

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. Michael U. Yap, MD appears to accept the following insurance providers: Anthem Blue Cross HMO, Aetna HMO, Blue Shield of California, United Healthcare HMO, Anthem, Medicare Advantage, Providence, Health Net HMO and CIGNA HMO.

Insurance Accepted by Provider includes:

According to our sources, Dr. Michael U. Yap, MD accepts the following insurance providers:

Anthem Blue Cross HMO

Aetna HMO

Blue Shield of California

United Healthcare HMO

Anthem

Medicare Advantage

Providence

Health Net HMO

CIGNA HMO

Ratings & Reviews

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General Payments

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

**Payments by Company**
Otsuka America Pharmaceutical, Inc.	$1,527 SAMSCA $843	JYNARQUE $684
Otsuka Pharmaceutical Development & Commercialization, Inc.	$718 JYNARQUE $718
Relypsa, Inc.	$570 VELTASSA $570
Questcor Pharmaceuticals	$377 ACTHAR $377
Keryx Biopharmaceuticals, Inc.	$331 Auryxia $331
Other	$2,453 Rayaldee $247	Auryxia $238	Renal - PD $192	ACTHAR $185	VELTASSA $180	Other $1,412

**Types of Payments**
Food and Beverage	$5,248
Consulting Fee	$718
Education	$10

Biography

Dr. Michael Yap practices adult nephrology. Before completing his residency at Maricopa Medical Center, Dr. Yap attended medical school at American University of the Caribbean School of Medicine. Dr. Yap's areas of expertise include polycystic kidney disease, glomerulonephritis, and hematuria (blood in urine). He seems to honor United Healthcare HMO, Anthem, and Blue California, as well as other insurance carriers. In addition to English, he speaks Spanish. He is professionally affiliated with Providence Medical Foundation. Dr. Yap's practice in Orange, CA is open to new patients as reported by Providence.