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Home > CA Providers > Obstetricians & Gynecologists: OB-GYNs

Dr. Patrick Diesfeld, MD

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Specializes in: Obstetrics & Gynecology

168 N Brent Street Suite 407
Ventura, CA 93003

(805) 648-2717

Dr. Patrick Diesfeld, MD is an obstetrician and gynecologist in Ventura, CA specializing in obstetrics & gynecology. Dr. Patrick Diesfeld, MD is affiliated with Women's Health Partnership Medical Group.

Office Locations

168 N Brent Street Suite 407
Ventura, CA 93003

(805) 648-2717

(805) 648-2023

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In The News (see more mentions in the news)

“Dr. Patrick Diesfeld, an obstetrician with offices in Santa Paula and Ventura who said he consents to guiding fathers hands in the delivery room, said he believes that the physician is still...”—"Delivery Dads : Fathers take active role in their babies' birth. Critics say doctors are putting themselves at risk.", Los Angeles Times, June 2025

“Patrick Diesfeld, M.D., who specializes in obstetrics-gynecology, will lead the discussion during the seminar to be held from 6 to 8 p.m. in the eighth-floor Nichols Auditorium at Community...”—"CMHS seminar May 13", Santa Paula Times, May 2008

“"They said we'd been given some land out on the east end and that it could conceivably be a hospital," said Ventura gynecologist Patrick Diesfeld, whose office adjoins Community Memorial.”—"Hospital Accused of 'Hostile Takeover' Bid", Los Angeles Times, May 2000

Noteworthy Medicare Patient Procedures Performed by Dr. Patrick Diesfeld, MD in 2023

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

Top 5%

By Affordability:

cervical cancer screening

cytology

gynecologic cytology

gynecologic pathology

Pap screening

Pap test

In 2023, Dr. Patrick Diesfeld, MD had a list price for cervical cancer screening, cytology, gynecologic cytology, gynecologic pathology, Pap screening, and Pap test that was lower than the list prices billed to Medicare by 95% of providers in related specialties within California. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Patrick Diesfeld, MD treated as an obstetrician and gynecologist in Ventura, CA during 2020 were preventive care, cytology and gynecologic pathology.

Volume of procedures performed by Dr. Patrick Diesfeld, MD for Medicare patients.

cytology	28
doctor visit	31
gynecologic pathology	28
preventive care	28

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Patrick Diesfeld, MD.

**Gender**
Male	0
Female	47

**Age**
From 65 to 74	31
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Patrick Diesfeld, MD in 2020

The most common conditions of Medicare patients that Dr. Patrick Diesfeld, MD treated during 2020 were hypertension and high cholesterol.

Hypertension	57
High Cholesterol	49
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

2021 Medicare Procedure Volume

The top procedures that Dr. Patrick Diesfeld, MD treated as an obstetrician and gynecologist in Ventura, CA during 2021 were preventive care, cytology, gynecologic pathology and ultrasound (sonogram).

Volume of procedures performed by Dr. Patrick Diesfeld, MD for Medicare patients.

cytology	46
doctor visit	101
gynecologic pathology	46
lab tests	17
pelvic imaging	29
preventive care	46
ultrasound (sonogram)	29
women's imaging	14

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Patrick Diesfeld, MD.

**Gender**
Male	0
Female	94

**Ethnicity**
Non-Hispanic White	73
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	65
From 75 to 84	18
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Patrick Diesfeld, MD in 2021

The most common conditions of Medicare patients that Dr. Patrick Diesfeld, MD treated during 2021 were high cholesterol, hypertension, depression and ischemic heart disease.

Hypertension	43
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	17
Depression	21
Chronic Kidney Disease	13
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	12
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Patrick Diesfeld, MD treated as an obstetrician and gynecologist in Ventura, CA during 2022 were preventive care, ultrasound (sonogram), cytology and gynecologic pathology.

Volume of procedures performed by Dr. Patrick Diesfeld, MD for Medicare patients.

abdominal imaging	18
cytology	39
doctor visit	79
gynecologic pathology	39
lab tests	17
pelvic imaging	24
preventive care	53
ultrasound (sonogram)	42
women's imaging	12

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Patrick Diesfeld, MD.

**Gender**
Male	0
Female	98

**Ethnicity**
Non-Hispanic White	83
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

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

Conditions of Medicare patients treated by Dr. Patrick Diesfeld, MD in 2022

The most common conditions of Medicare patients that Dr. Patrick Diesfeld, MD treated during 2022 were high cholesterol, hypertension, depression and osteoperosis.

Hypertension	48
High Cholesterol	59
Stroke	0
Ischemic Heart Disease	0
Depression	18
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	16
Atrial Fibrilation	11
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	13
Dementia	0
Cancer	13

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Patrick Diesfeld, MD treated as an obstetrician and gynecologist in Ventura, CA during 2023 were preventive care, cytology and gynecologic pathology.

Volume of procedures performed by Dr. Patrick Diesfeld, MD for Medicare patients.

cytology	16
doctor visit	48
gynecologic pathology	16
preventive care	16

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Patrick Diesfeld, MD.

**Gender**
Male	0
Female	58

**Age**
From 65 to 74	35
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Patrick Diesfeld, MD in 2023

The most common conditions of Medicare patients that Dr. Patrick Diesfeld, MD treated during 2023 were high cholesterol, hypertension, osteoperosis and depression.

Hypertension	48
High Cholesterol	64
Stroke	0
Ischemic Heart Disease	0
Depression	21
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	22
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 2020 - 2023

Volume of procedures performed by Dr. Patrick Diesfeld, MD for Medicare patients.

The highest averages for the top procedures that Dr. Patrick Diesfeld, MD treated as an obstetrician and gynecologist in Ventura, CA were ultrasound (sonogram), preventive care, cytology and gynecologic pathology.

abdominal imaging	18
cytology	32
doctor visit	64
gynecologic pathology	32
lab tests	17
pelvic imaging	26
preventive care	35
ultrasound (sonogram)	35
women's imaging	13

Average Medicare Patient Data From 2020 - 2023

Information about Medicare patients treated by Dr. Patrick Diesfeld, MD.

**Gender**
Male	0
Female	74

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

**Age**
75 to 84	4
85 and over	0
Less than 65	0
65 to 74	50

Average of Total of Conditions of Medicare patients treated by Dr. Patrick Diesfeld, MD From 2020 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. Patrick Diesfeld, MD treated were high cholesterol, hypertension, depression and osteoperosis.

Hypertension	49
High Cholesterol	55
Stroke	0
Ischemic Heart Disease	4
Depression	15
Chronic Kidney Disease	3
Asthma	0
Osteoporosis	9
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	6
Atrial Fibrillation	2
Cancer	3
Dementia	0

Education & Training

He has a state license in California.

Licensed In: California

Affiliations & Hospitals

Dr. Patrick Diesfeld, MD is associated with these hospitals and organizations:

Women's Health Partnership Medical Group

Ratings & Reviews

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General Payments

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

**Payments by Company**
Halt Medical, INC	$1,994 Acessa $1,994
Pfizer Inc.	$354 DUAVEE $242	TOVIAZ $13	$99
Bayer HealthCare Pharmaceuticals Inc.	$338 Mirena $170	Skyla $90	Kyleena $78
ASCEND Therapeutics US, LLC	$316 EstroGel $174	Sprix $96	PROTIVA $7	$40
Astellas Pharma US Inc	$314 Myrbetriq $123	Veozah $19	Vesicare $16	$156
Other	$1,600 Osphena $320	Acessa $183	BRISDELLE $141	PARAGARD $106	NEXPLANON $58	Other $792

**Types of Payments**
Food and Beverage	$2,497
Travel and Lodging	$1,857
Education	$350
Gift	$212

Biography

Dr. Patrick Diesfeld sees patients in Ventura, CA. His medical specialty is obstetrics & gynecology. Dr. Diesfeld has obtained a license to practice in California.