John Herbert Niles, M.D.
Gynecology Physician · Greenbelt, MD
John Herbert Niles, M.D. is a gynecology physician with a practice address in Greenbelt, Maryland, and NPI 1528161445, issued on Sep 6, 2006. Check the license (Maryland D0009397, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- John Herbert Niles
- Credential
- M.D.
- Primary taxonomy
- Gynecology Physician 207VG0400X
- License number
- D0009397 MD
Self-reported in NPPES; status is on the state search - Practice location
- 7500 Greenway Center Dr, Greenbelt, MD 20770
- Phone
- (301) 474-5400
- Enumerated
- Sep 6, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (301) 474-0800
- Entity
- Type 1 · individual
8 nearest gynecology physician records → All 131 in Maryland → Look up another NPI →
Also registered at 7500 Greenway Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Herbert Niles in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0009397Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10% fewer Medicare Part D claims than the average gynecology physician in 2024
269 Medicare Part D claims for 75 beneficiaries, against an average of 299 among the 1,919 providers of this specialty who prescribed in Part D.
Most prescribed
- Alendronate Sodium116 claims
- Simvastatin31 claims
- Valacyclovir24 claims
- Nitrofurantoin Mono-Macro13 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.
John Herbert Niles among 131 gynecology physician records in Maryland
John Herbert Niles, M.D. is one of 131 gynecology physician records with a practice address in Maryland. 53% 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 27% of them.
- NPI issued2006 · 27% of these records are older, 31% newer
- In a Medicare fileYes · 53% of these records are
- In the CMS Doctors and Clinicians fileNo · 33% of these records are
- Record last updated2007 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VG0400X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gynecology Physician providers in Maryland
There are 131 gynecology physician records in Maryland.
All 131 in Maryland → Every provider in Greenbelt → Gynecology Physician nationwide →
The 8 gynecology physician records with the nearest ZIP codes
- Siamack Bahrami, MDGreenbelt, MD 207701134144082
- Rupen Baxi, MDGreenbelt, MD 207701790939528
- Ashley Pimperl, CRNPGreenbelt, MD 207701255107231
- Lenore Tietjens-Grillo, M.D.Greenbelt, MD 207701376609248
- Kwasi Debra, MDGlenn Dale, MD 207691972512408
- Dalila Harvey-Granger, M.D.Largo, MD 207741821279928
- Susan Jenkins, M.DLargo, MD 207741942299417
- Dana Baras, MDFulton, MD 207591053573501
Common questions
What is John Herbert Niles, M.D.'s NPI number?
John Herbert Niles, M.D.'s National Provider Identifier (NPI) is 1528161445, issued on Sep 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Herbert Niles, M.D. located?
The NPPES record lists a practice address at 7500 Greenway Center Dr, Greenbelt, MD, 20770. Phone: (301) 474-5400. Providers update this record themselves, so call before visiting.
How can I verify John Herbert Niles, M.D.'s license?
NPPES lists Maryland license number D0009397, 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 John Herbert Niles, M.D. prescribe under Medicare Part D?
In 2024, John Herbert Niles, M.D. had 269 Medicare Part D claims for 75 beneficiaries; the average among gynecology physician prescribers was 299. 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.