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Dr. Elpidio C. Mariano, MD

Accepting New Patients

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Specializes in: Hospital Medicine (Hospitalist) and Surgery

Professional interests include: partial splenectomy, muscle biopsy, laparoscopic splenectomy, and more.

400 North Mcdowell Boulevard
Petaluma, CA 94954

(707) 303-1709

Dr. Elpidio C. Mariano, MD is a hospitalist in Petaluma, CA specializing in hospital medicine (hospitalist) and surgery. Dr. Elpidio C. Mariano, MD is affiliated with Providence and Providence Medical Foundation.

Office Locations

106 Lynch Creek Way Suite 9b
Petaluma, CA 94954

(707) 763-1575

(707) 763-9172

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400 North Mcdowell Boulevard
Petaluma, CA 94954

(707) 303-1709

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Some issues Dr. Elpidio C. Mariano, MD can help you with:

Biopsy

A biopsy is a procedure performed to remove a small sample of cells for testing. The cells are examined in a laboratory to check for disease, or sometimes to see how badly a known disease is affecting them. Biopsy can be performed on any part of the body.

Although biopsy is most often associated with cancer, it can also be used to check for other diseases, such as infections. A biopsy sample can be scraped, cut, collected with a needle, taken with a machine that punches out a tiny piece, or removed with the tiny tools in an endoscope.

In most cases, a biopsy is a simple outpatient procedure. Depending on the procedure, patients may need to stop taking certain medications beforehand, such as blood thinners. It is important for patients to tell doctors if they are pregnant, as certain biopsies require the use of x-rays to guide the needle to the right location. There is usually very little pain associated with a biopsy. Patients will have to wait a few days to hear the results.

Breast Biopsy

Breast biopsy is a procedure where a small sample of tissue is collected from the breast for testing. A physician may prescribe a breast biopsy for a variety of reasons, but they are most frequently prescribed for a lump found in the breast. Biopsy samples extracted are examined by pathologists in a laboratory setting and are tested to determine if they are cancerous or benign, or indicative of some other condition. Depending on the lab results, physicians may prescribe additional treatment. Other circumstances which may prompt a breast biopsy include:

Mammograms that detect other unusual features in the chest, such as a cyst or calcium deposit
Breast scans or ultrasounds that display abnormalities
Nipple changes, such as scaling, crusting, or bloody discharge

Breast biopsies are collected through several different procedures and the specific type of biopsy that a patient receives depends on the size, location, and features of a breast lump or irregularity. The three main methods of collecting a breast biopsy include:

Fine needle aspiration (FNA biopsy), where a thin needle is directed into a breast lump or abnormality, extracting a small sample of tissue or liquid
Core needle biopsy (CNB biopsy), where a hollow needle is directed into a breast lump or abnormality, extracting cylinders of tissue called "cores"
Open (surgical) biopsy, where a breast lump is removed through an incision in the breast

Fine needle aspiration (FNA) and core needle biopsy (CNB) are sometimes image-guided, where a mammogram, ultrasound, or MRI helps direct the physician performing the needle extraction.

Fine needle aspiration, the most common biopsy method, generally requires few patient preparations. It is recommended patients avoid using lotion, deodorant, and perfume prior to their biopsy procedure. FNA biopsy is performed with local anesthesia (topical numbing cream) and typically has a quick recovery, but patients may experience soreness for a few days. Core needle biopsy extracts slightly more tissue than an FNA biopsy.

Open (surgical) biopsy is more invasive and requires general anesthesia, where patients are put to sleep during the procedure. Patients must fast prior to the surgery. After the biopsy is performed, patients are monitored in a recovery room for a time before being discharged, when they will need someone else to provide transportation.

Although some may consider breast biopsy to be a simple procedure, it can catch critical issues - particularly breast cancer - that impact wellness. If a breast biopsy reveals an underlying condition like life-threatening cancer, patients can receive the diagnosis and medical treatment that is necessary for their long-term health.

Pancreatectomy (Pancreas Removal)

Pancreatectomy is surgery to remove part or all of the pancreas to treat pancreatitis, tumors, or cancer. The pancreas is located behind the stomach and near the small intestine and spleen. There are three sections of the pancreas:

The head, which is the portion closest to the intestines
The body, which is the middle portion of the pancreas
The tail, which is the portion nearest the spleen

Pancreas removal procedures differ based on how much of the pancreas and surrounding organs are removed. There are three types of pancreatectomy:

Distal pancreatectomy removes the tail and body of the pancreas. This procedure treats tumors confined to these areas.
Pancreaticoduodenectomy, or the Whipple procedure, removes the pancreas, duodenum, bile duct, and, sometimes, part of the stomach. The Whipple procedure is used for pancreatic tumors that have not spread past the head of the pancreas and for other conditions affecting the pancreas, duodenum, and bile duct.
Total pancreatectomy removes the whole pancreas along with the duodenum, gallbladder, parts of the stomach and bile duct, surrounding lymph nodes, and, potentially, the spleen. Rarely performed, total pancreatectomy treats conditions that involve the entire pancreas, such as tumors found in multiple sites on the pancreas, or for rare tumors such as intraductal papillary mucinous neoplasms (IPMN).

Pancreatectomy can be done by open or minimally invasive surgery. During a laparoscopic pancreatectomy, the surgeon will use tiny incisions to insert a thin tube with a camera, or laparoscope, into the abdomen. Open surgery, or a laparotomy, is performed through a larger incision on the abdomen. If additional organs are removed, some procedures may require that the small intestine be reconnected to the stomach.

The hospital for pancreatectomy stay may be between 1-3 weeks. Generally, laparoscopic surgeries require shorter recovery periods. Whether patients undergo an open or laparoscopic procedure is determined by factors such as their condition and the extent of their procedure. For example, open surgery tends to be more common for distal pancreatectomies. If patients have difficulty eating, they may require a nasogastric tube, inserted through the nose, to carry food to their stomachs. A catheter can be inserted into the bladder if patients have trouble urinating. Full recovery may take about two months.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Elpidio C. Mariano, MD treated as a hospitalist in Petaluma, CA during 2012 were hospital care and inpatient care.

Volume of procedures performed by Dr. Elpidio C. Mariano, MD for Medicare patients.

doctor visit	138
hospital care	83
inpatient care	83

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Elpidio C. Mariano, MD treated as a hospitalist in Petaluma, CA during 2013 were hospital care, inpatient care, open surgery and abdominal surgery.

Volume of procedures performed by Dr. Elpidio C. Mariano, MD for Medicare patients.

abdominal surgery	13
doctor visit	125
gastrointestinal procedures	13
hospital care	122
inpatient care	122
open surgery	13

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Elpidio C. Mariano, MD.

**Gender**
Male	75
Female	101

**Ethnicity**
Non-Hispanic White	143
Black	0
Hispanic	22
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	60
From 75 to 84	55
85 and over	39
Less than 65	22

Conditions of Medicare patients treated by Dr. Elpidio C. Mariano, MD in 2013

Hypertension	74
High Cholesterol	55
Stroke	8
Ischemic Heart Disease	45
Depression	23
Chronic Kidney Disease	27
Asthma	9
Osteoperosis	12
Atrial Fibrilation	18
Heart Failure	29
Chronic Obstructive Pulmonary Disease	16
Diabetes	20
Dementia	11
Cancer	24

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Elpidio C. Mariano, MD treated as a hospitalist in Petaluma, CA during 2014 were hospital care and inpatient care.

Volume of procedures performed by Dr. Elpidio C. Mariano, MD for Medicare patients.

doctor visit	49
hospital care	14
inpatient care	14

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Elpidio C. Mariano, MD.

**Gender**
Male	51
Female	32

**Ethnicity**
Non-Hispanic White	72
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	31
From 75 to 84	23
85 and over	16
Less than 65	13

Conditions of Medicare patients treated by Dr. Elpidio C. Mariano, MD in 2014

Hypertension	75
High Cholesterol	59
Stroke	0
Ischemic Heart Disease	46
Depression	30
Chronic Kidney Disease	31
Asthma	13
Osteoperosis	0
Atrial Fibrilation	14
Heart Failure	29
Chronic Obstructive Pulmonary Disease	20
Diabetes	31
Dementia	17
Cancer	40

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Elpidio C. Mariano, MD treated as a hospitalist in Petaluma, CA during 2015 were hospital care and inpatient care.

Volume of procedures performed by Dr. Elpidio C. Mariano, MD for Medicare patients.

doctor visit	51
hospital care	60
inpatient care	60

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Elpidio C. Mariano, MD.

**Gender**
Male	80
Female	116

**Age**
From 65 to 74	84
From 75 to 84	44
85 and over	36
Less than 65	32

Conditions of Medicare patients treated by Dr. Elpidio C. Mariano, MD in 2015

Hypertension	66
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	31
Depression	29
Chronic Kidney Disease	22
Asthma	11
Osteoperosis	0
Atrial Fibrilation	14
Heart Failure	19
Chronic Obstructive Pulmonary Disease	12
Diabetes	16
Dementia	0
Cancer	22

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Elpidio C. Mariano, MD treated as a hospitalist in Petaluma, CA during 2016 were hospital care and inpatient care.

Volume of procedures performed by Dr. Elpidio C. Mariano, MD for Medicare patients.

doctor visit	69
hospital care	32
inpatient care	32

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Elpidio C. Mariano, MD.

**Gender**
Male	44
Female	44

**Ethnicity**
Non-Hispanic White	71
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	40
From 75 to 84	22
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Elpidio C. Mariano, MD in 2016

Hypertension	74
High Cholesterol	63
Stroke	0
Ischemic Heart Disease	45
Depression	28
Chronic Kidney Disease	38
Asthma	24
Osteoperosis	0
Atrial Fibrilation	20
Heart Failure	18
Chronic Obstructive Pulmonary Disease	19
Diabetes	32
Dementia	13
Cancer	25

Medicare Procedure and Patient Information

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Elpidio C. Mariano, MD.

**Gender**
Male	12
Female	29

**Age**
From 65 to 74	20
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Elpidio C. Mariano, MD in 2018

Hypertension	73
High Cholesterol	61
Stroke	0
Ischemic Heart Disease	49
Depression	34
Chronic Kidney Disease	32
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	27
Dementia	0
Cancer	29

Medicare Procedure and Patient Information

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Elpidio C. Mariano, MD.

**Gender**
Male	17
Female	19

**Age**
From 65 to 74	13
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Elpidio C. Mariano, MD in 2019

Hypertension	75
High Cholesterol	64
Stroke	0
Ischemic Heart Disease	42
Depression	50
Chronic Kidney Disease	56
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	31
Chronic Obstructive Pulmonary Disease	0
Diabetes	47
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Elpidio C. Mariano, MD.

**Gender**
Male	11
Female	12

**Age**
From 65 to 74	0
From 75 to 84	12
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Elpidio C. Mariano, MD in 2020

Hypertension	75
High Cholesterol	48
Stroke	0
Ischemic Heart Disease	48
Depression	0
Chronic Kidney Disease	48
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	48
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Elpidio C. Mariano, MD treated as a hospitalist in Petaluma, CA during 2021 were minimally invasive procedures, joint surgery, upper extremity surgery and decompression surgery.

Volume of procedures performed by Dr. Elpidio C. Mariano, MD for Medicare patients.

decompression surgery	12
joint surgery	24
minimally invasive procedures	24
upper extremity surgery	24

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Elpidio C. Mariano, MD.

**Gender**
Male	17
Female	30

**Age**
From 65 to 74	20
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Elpidio C. Mariano, MD in 2021

Hypertension	74
High Cholesterol	55
Stroke	0
Ischemic Heart Disease	0
Depression	30
Chronic Kidney Disease	23
Asthma	23
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	23
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Elpidio C. Mariano, MD treated as a hospitalist in Petaluma, CA during 2022 were minimally invasive procedures, joint surgery, upper extremity surgery and decompression surgery.

Volume of procedures performed by Dr. Elpidio C. Mariano, MD for Medicare patients.

decompression surgery	12
joint surgery	24
minimally invasive procedures	24
upper extremity surgery	24

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Elpidio C. Mariano, MD.

**Gender**
Male	14
Female	15

**Age**
From 65 to 74	0
From 75 to 84	11
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Elpidio C. Mariano, MD in 2022

Hypertension	69
High Cholesterol	62
Stroke	0
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Elpidio C. Mariano, MD.

**Gender**
Male	15
Female	28

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

Conditions of Medicare patients treated by Dr. Elpidio C. Mariano, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	33
Depression	0
Chronic Kidney Disease	26
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	37
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Elpidio C. Mariano, MD.

**Gender**
Male	11
Female	15

**Age**
From 65 to 74	0
From 75 to 84	12
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Elpidio C. Mariano, MD in 2024

Hypertension	69
High Cholesterol	65
Stroke	0
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Elpidio C. Mariano, MD for Medicare patients.

The highest averages for the top procedures that Dr. Elpidio C. Mariano, MD treated as a hospitalist in Petaluma, CA were hospital care, inpatient care, minimally invasive procedures and joint surgery.

abdominal surgery	13
decompression surgery	12
doctor visit	86
gastrointestinal procedures	13
hospital care	62
inpatient care	62
joint surgery	24
minimally invasive procedures	24
open surgery	13
upper extremity surgery	24

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Elpidio C. Mariano, MD.

**Gender**
Male	28
Female	36

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	23
Hispanic	1
Native American / Alaskan Native	0
Other	0

**Age**
85 and over	7
75 to 84	14
Less than 65	5
65 to 74	24

Average of Total of Conditions of Medicare patients treated by Dr. Elpidio C. Mariano, MD From 2012 - 2024

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

Hypertension	66
High Cholesterol	54
Stroke	0
Ischemic Heart Disease	28
Depression	18
Chronic Kidney Disease	25
Asthma	6
Osteoporosis	1
Heart Failure	10
Chronic Obstructive Pulmonary Disease	5
Diabetes	23
Atrial Fibrillation	5
Cancer	11
Dementia	3

Education & Training

He has a state license in California.

Licensed In: California

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. Elpidio C. Mariano, MD appears to accept the following insurance providers: Aetna PPO, CIGNA PPO, CIGNA HMO, Western Health Advantage HMO, Blue Shield of California, MultiPlan PPO, Medicare Advantage, HealthSmart, Interplan PPO, TriWest, Anthem Blue Cross HMO, Anthem Blue Cross PPO, Health Net PPO, Health Net HMO, Anthem, Coventry PPO, United Healthcare PPO, United Healthcare HMO, US Family Health Plan, Aetna Medicare PPO, Partnership Health Plan of California and CoventryFirst Health PPO.

Insurance Accepted by Provider includes:

According to our sources, Dr. Elpidio C. Mariano, MD accepts the following insurance providers:

Aetna PPO

CIGNA PPO

CIGNA HMO

Western Health Advantage HMO

Blue Shield of California

MultiPlan PPO

Medicare Advantage

HealthSmart

Interplan PPO

TriWest

Anthem Blue Cross HMO

Anthem Blue Cross PPO

Health Net PPO

Health Net HMO

Anthem

Coventry PPO

United Healthcare PPO

United Healthcare HMO

US Family Health Plan

Aetna Medicare PPO

Partnership Health Plan of California

CoventryFirst Health PPO

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General Payments

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

**Payments by Company**
Pacira Pharmaceuticals Incorporated	$81 Exparel $81
TELA Bio, Inc.	$18 Ovitex $18
Medtronic Sofamor Danek USA, Inc.	$17 Biologics Therapies $17
Cook Incorporated	$10 SUR - SIS $10

**Types of Payments**
Food and Beverage	$127

Biography

Dr. Elpidio Mariano is a specialist in surgery and hospital medicine (hospitalist). His areas of expertise include the following: laparoscopic gastrostomy, fine needle aspiration (FNA), and pancreatectomy (pancreas removal). He is professionally affiliated with Providence Medical Foundation. Dr. Mariano is in-network for several insurance carriers, including Anthem, Blue Cross/Blue Shield, and HealthSmart. He welcomes new patients at his office inPetaluma, CA as reported by Providence Medical Foundation.