Mark S. Seigel, M.D.
Obstetrics & Gynecology Physician · Germantown, MD
Mark S. Seigel, M.D. is an obstetrics & gynecology physician with a practice address in Germantown, Maryland, and NPI 1366540080, issued on Sep 20, 2006. Check the license (Maryland D0026246, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Mark S. Seigel
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- D0026246 MD
D26246 MD
Self-reported in NPPES; status is on the state search - Practice location
- 19785 Crystal Rock Dr, Germantown, MD 20874
- Phone
- (301) 528-8444
- Enumerated
- Sep 20, 2006
- Record last updated
- Sep 24, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (240) 331-9176
- Medicare enrollment
- Enrolled (PECOS I20120905000574); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 1977
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,034 in Maryland → Look up another NPI →
Also registered at 19785 Crystal Rock Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Vishal BantDentist1053804336
- Eric Berquist, PTPhysical Therapist1376559419
- Ayhan Cetiner, DPTPhysical Therapist1912303942
- Emily Gottlieb, D.O.Obstetrics & Gynecology Physician1225266018
- Jennifer Jagoe, MDObstetrics & Gynecology Physician1205837648
- Darshana Kasbekar, PTSpecialist1932568649
Verify Mark S. Seigel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0026246Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
86 Medicare Part D claims for 20 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of claims.
Most prescribed
- Daptomycin12 claims
- Sodium Chloride12 claims
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: $24.38
1 payment: 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 LLCNorth Bethesda, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark S. Seigel among 1,034 obstetrics & gynecology physician records in Maryland
Mark S. Seigel, M.D. 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 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 53% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1977 · median 2005 among the 597 with a school on file
- Record last updated2021 · 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 Germantown → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Emily Gottlieb, D.O.Germantown, MD 208741225266018
- Jennifer Jagoe, MDGermantown, MD 208741205837648
- Kambiz Kazemi, MDGermantown, MD 208741548374556
- Subalaxmi Vinayakom, MDGermantown, MD 208741922166784
- Karishma Anik, D.O.Damascus, MD 208721659695187
- Danielah Ashtier, M.DDamascus, MD 208721174751762
- Nelson Echebiri, M.D, MBADamascus, MD 208721780973305
- Katrina Foster, M.D.Damascus, MD 208721942454533
Common questions
What is Mark S. Seigel, M.D.'s NPI number?
Mark S. Seigel, M.D.'s National Provider Identifier (NPI) is 1366540080, issued on Sep 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark S. Seigel, M.D. located?
The NPPES record lists a practice address at 19785 Crystal Rock Dr, Germantown, MD, 20874. Phone: (301) 528-8444. Providers update this record themselves, so call before visiting.
How can I verify Mark S. Seigel, M.D.'s license?
NPPES lists Maryland license number D0026246, 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 Mark S. Seigel, M.D. prescribe under Medicare Part D?
In 2024, Mark S. Seigel, M.D. had 86 Medicare Part D claims for 20 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.