Geraldine H. O'Sullivan Coyne, M.D, PHD
Medical Oncology Physician · Bethesda, MD
Geraldine H. O'Sullivan Coyne, M.D, PHD is a medical oncology physician with a practice address in Bethesda, Maryland, and NPI 1205182318, issued on Jul 25, 2012. Check the license on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Geraldine H. O'Sullivan Coyne
- Credential
- M.D, PHD
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- 153757 ZZ
Self-reported in NPPES; status is on the state search - Practice location
- 10 Center Dr, Bethesda, MD 20892
- Phone
- (301) 496-4916
- Enumerated
- Jul 25, 2012
- Record last updated
- Jul 25, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20250721002244); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 224 in Maryland → Look up another NPI →
Also registered at 10 Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Geraldine H. O'Sullivan Coyne in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of PhysiciansCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- North Shore Health System Medical Faculty Group Practice IncManhasset, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Geraldine H. O'Sullivan Coyne among 224 medical oncology physician records in Maryland
Geraldine H. O'Sullivan Coyne, M.D, PHD is one of 224 medical oncology physician records with a practice address in Maryland. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 72% of them.
- NPI issued2012 · 72% of these records are older, 23% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2003 · median 2000 among the 128 with a school on file
- Record last updated2012 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Maryland
There are 224 medical oncology physician records in Maryland.
All 224 in Maryland → Every provider in Bethesda → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Christina Annunziata, M.D., PH.D.Bethesda, MD 208921093084139
- James Doroshow, M.D.Bethesda, MD 208921255456174
- Barbara Dunn, MDBethesda, MD 208921639424880
- Joseph Frank, M.D.Bethseda, MD 208921982974051
- Christian Hinrichs, M.D.Bethesda, MD 208921609002708
- Richard Hodes, M.D.Bethesda, MD 208921659369387
- Geoffrey Kim, M.D.Bethesda, MD 208921285831446
- Christopher Klebanoff, M.D.Bethesda, MD 208921023155827
Common questions
What is Geraldine H. O'Sullivan Coyne, M.D, PHD's NPI number?
Geraldine H. O'Sullivan Coyne, M.D, PHD's National Provider Identifier (NPI) is 1205182318, issued on Jul 25, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Geraldine H. O'Sullivan Coyne, M.D, PHD located?
The NPPES record lists a practice address at 10 Center Dr, Bethesda, MD, 20892. Phone: (301) 496-4916. Providers update this record themselves, so call before visiting.
How can I verify Geraldine H. O'Sullivan Coyne, M.D, PHD's license?
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.
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.