Mary Ahern, MD
Obstetrics & Gynecology Physician · Baltimore, MD
Mary Ahern, MD is an obstetrics & gynecology physician with a practice address in Baltimore, Maryland, and NPI 1700413499, issued on Mar 24, 2020. Check the license (Maryland D0099639, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Mary Ahern
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- D0099639 MD
Self-reported in NPPES; status is on the state search - Practice location
- 6565 N Charles St Ste 212, Baltimore, MD 21204
- Phone
- (410) 823-1120
- Enumerated
- Mar 24, 2020
- Record last updated
- Jul 2, 2024
- Medicare enrollment
- Enrolled (PECOS I20240809003891); accepts Medicare assignment
- Medical or professional school
- Temple University School Of Medicine, 2020
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,034 in Maryland → Look up another NPI →
Also registered at 6565 N Charles St Ste 212
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Laura Erdman, MDObstetrics & Gynecology Physician1265438238
Verify Mary Ahern in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0099639Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
18 Medicare Part D claims for 11 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $188.21
8 payments; by number, the most common kind was food and beverage; the largest payer was Astellas Pharma US Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Capital Womens Care LLCFrederick, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Ahern among 1,034 obstetrics & gynecology physician records in Maryland
Mary Ahern, MD is one of 1,034 obstetrics & gynecology physician records with a practice address in Maryland. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 93% of them.
- NPI issued2020 · 93% of these records are older, 4% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2020 · median 2005 among the 597 with a school on file
- Record last updated2024 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Maryland
There are 1,034 obstetrics & gynecology physician records in Maryland.
All 1,034 in Maryland → Every provider in Baltimore → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Monica Buescher, MDTowson, MD 212041144204603
- Susie Chung, M.D.Towson, MD 212041912961871
- Margaret Cyzeski, MDBaltimore, MD 212041669455341
- Tracy Duke, MDTowson, MD 212041487637161
- Laura Erdman, MDBaltimore, MD 212041265438238
- Mary Facciolo, MDTowson, MD 212041104809888
- Andrea Fitzgerald, M.D.Towson, MD 212041144287780
- Lawrence Fogelson, M.D.Towson, MD 212041629092770
Common questions
What is Mary Ahern, MD's NPI number?
Mary Ahern, MD's National Provider Identifier (NPI) is 1700413499, issued on Mar 24, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Mary Ahern, MD located?
The NPPES record lists a practice address at 6565 N Charles St Ste 212, Baltimore, MD, 21204. Phone: (410) 823-1120. Providers update this record themselves, so call before visiting.
How can I verify Mary Ahern, MD's license?
NPPES lists Maryland license number D0099639, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mary Ahern, MD prescribe under Medicare Part D?
In 2024, Mary Ahern, MD had 18 Medicare Part D claims for 11 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.