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Obstetrics & Gynecology Specialists in Frederick, MD

Browse 24 Obstetrics & Gynecology providers listed in NPPES with a practice address in Frederick, Maryland.

24 Healthcare Providers

How Frederick compares with the U.S.

Frederick has 29 clinicians in Obstetrics & Gynecology per 100,000 residents, 2.1 times the U.S. rate of 14.

That is 24 active clinicians in Obstetrics & Gynecology with a practice address in Frederick, for a population of 83,395.

The Maryland rate is 17 per 100,000 residents.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

100% of clinicians in Obstetrics & Gynecology in Frederick listed in the CMS Medicare file (15 of 15) accept Medicare assignment. That is higher than the Maryland share of 86%.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

13% of clinicians in Obstetrics & Gynecology in Frederick listed in the CMS Medicare file (2 of 15) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is similar to the Maryland share of 17%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Obstetrics & Gynecology Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Obstetrics & Gynecology practitioners in Frederick, MD

Source: CMS PECOS
PECOS Enrolled Specialists 19 In Frederick, MD
Part B Lab & Imaging Eligible 19 Diagnostic Referrals
DME Ordering Eligible 19 Durable Medical Equipment
Home Health Agency Referrals 19 HHA Ordering Eligible
Showing 1โ€“20 of 24 providers
With recent CMS data first, then Aโ€“Z

Dr. Debra Acerenza , DO

Obstetrics & Gynecology

Active NPI Status Accepts Medicare Assignment
97 Thomas Johnson Dr, Suite 101, Frederick, MD 217024373
Phone: 3016634545
NPI Identifier 1932181781
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Dr. Gerardo G Araiza , MD

Obstetrics & Gynecology

Active NPI Status
61 Thomas Johnson Dr, Frederick, MD 217024301
Phone: 3016636171
NPI Identifier 1023091709
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Dr. Leonard E Bienkowski , MD

Obstetrics & Gynecology

Active NPI Status Accepts Medicare Assignment
61 Thomas Johnson Dr, Frederick, MD 217024301
Phone: 3016636171
NPI Identifier 1205819984
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Dr. Edwin T. Chen , MD

Obstetrics & Gynecology

Active NPI Status
97 Thomas Johnson Dr, Suite 101, Frederick, MD 217024373
Phone: 3016634545
NPI Identifier 1144202995
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Dr. Tanya S Dewitt , MD

Obstetrics & Gynecology

Active NPI Status
75 Thomas Johnson Drive, Suite J, Frederick, MD 217024895
Phone: 3016200010
NPI Identifier 1881753689
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Dr. Jie Gao , MD

Obstetrics & Gynecology

Active NPI Status Accepts Medicare Assignment
97 Thomas Johnson Dr Ste 101, Frederick, MD 217024379
Phone: 3016634545
NPI Identifier 1780896183
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Dr. Allison Amy Groff , MD

Obstetrics & Gynecology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
61 Thomas Johnson Dr, Frederick, MD 217024301
Phone: 3016636171
NPI Identifier 1346568557
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Dr. Melissa Alejandra Hernandez , MD

Obstetrics & Gynecology

Active NPI Status
77 Thomas Johnson Dr Ste H, Frederick, MD 217024893
Phone: 3014142300
NPI Identifier 1598348633
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Dr. Amy N Heyman , DO

Obstetrics & Gynecology

Active NPI Status Accepts Medicare Assignment
61 Thomas Johnson Dr, Frederick, MD 217024301
Phone: 3016636171
NPI Identifier 1437289766
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Dr. Brian David Heyman , DO

Obstetrics & Gynecology

Active NPI Status Accepts Medicare Assignment
61 Thomas Johnson Dr, Frederick, MD 217024301
Phone: 3016636171
NPI Identifier 1902856289
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Dr. Yeung W Lee , MD

Obstetrics & Gynecology

Active NPI Status
61 Thomas Johnson Dr, Frederick, MD 217024301
Phone: 3016636171
NPI Identifier 1235113796
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Dr. Franck Lin , MD

Obstetrics & Gynecology

Active NPI Status
3510 Worthington Blvd Unit 101, Frederick, MD 217047066
Phone: 2408134199
NPI Identifier 1639533284
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Dr. Radha Rani Padhy , MD

Obstetrics & Gynecology

Active NPI Status Accepts Medicare Assignment
61 Thomas Johnson Dr, Frederick, MD 217024301
Phone: 3016636171
NPI Identifier 1770997041
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Dr. Analeta Njema Peterson , MD

Obstetrics & Gynecology

Active NPI Status Accepts Medicare Assignment
61 Thomas Johnson Dr, Frederick, MD 217024301
Phone: 3016636171
NPI Identifier 1083933162
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Dr. Gerrit Schipper , MD

Obstetrics & Gynecology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
61 Thomas Johnson Dr, Frederick, MD 217024301
Phone: 3016636171
NPI Identifier 1134101884
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Dr. Adedoyin Shonekan , MD

Obstetrics & Gynecology

Active NPI Status Accepts Medicare Assignment
7190 Crestwood Blvd, Frederick, MD 217037314
Phone: 2405291700
NPI Identifier 1932326709
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Dr. Alec Sunyecz , MD

Obstetrics & Gynecology

Active NPI Status Accepts Medicare Assignment
77 Thomas Johnson Dr Ste H, Frederick, MD 217024893
Phone: 3014142300
NPI Identifier 1598341117
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Dr. Selena Thomas , MD

Obstetrics & Gynecology

Active NPI Status Accepts Medicare Assignment
7190 Crestwood Boulevard, Frederick, MD 217033901
Phone: 2405291765
NPI Identifier 1265615116
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Dr. Renee A Thomas-Spencer , MD

Obstetrics & Gynecology

Active NPI Status Accepts Medicare Assignment
61 Thomas Johnson Dr, Frederick, MD 217024301
Phone: 3016636171
NPI Identifier 1407839772
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Dr. Sandra Celia Magos Christiansen , MD

Obstetrics & Gynecology

Active NPI Status
707 N Market St, Frederick, MD 217015246
Phone: 3016625300
NPI Identifier 1225399421
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Frequently Asked Questions about Obstetrics & Gynecology in Frederick

How do I check a Obstetrics & Gynecology practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the Maryland licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.