Robert Isaacs, M.D.
Diagnostic Radiology Physician · Germantown, MD
Robert Isaacs, M.D. is a diagnostic radiology physician with a practice address in Germantown, Maryland, and NPI 1669443446, issued on Jan 30, 2006. Check the license (Maryland D38257, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Robert Isaacs
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- D38257 MD
Self-reported in NPPES; status is on the state search - Practice location
- 20410 Observation Dr, Germantown, MD 20876
- Phone
- (301) 948-5700
- Enumerated
- Jan 30, 2006
- Record last updated
- Jul 22, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (301) 212-4277
- Medicaid ID
- 330841300 MD
- Medicare enrollment
- Enrolled (PECOS I20110802000304); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 1984
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 877 in Maryland → Look up another NPI →
Also registered at 20410 Observation Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Keshia AlfredClinical Social Worker1518673748
- Brenna Anderson, MS, BCBABehavior Analyst1265106603
- Walter Basen, M.D.Diagnostic Radiology Physician1437120102
- Renu Berry, M.D.Diagnostic Radiology Physician1356312201
- Alan Bobb, M.D.Diagnostic Radiology Physician1669443321
- Bruce Bortnick, M.D.Diagnostic Radiology Physician1740251271
Verify Robert Isaacs in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D38257Check 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
- Blackwell Physicians, LLCFort Washington, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert Isaacs among 877 diagnostic radiology physician records in Maryland
Robert Isaacs, M.D. is one of 877 diagnostic radiology physician records with a practice address in Maryland. 72% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 50% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1984 · median 2003 among the 604 with a school on file
- Record last updated2009 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 diagnostic radiology physician records list a practice address in Germantown
They are 14 of the 1,327 NPPES records with a practice address in Germantown, and 877 diagnostic radiology physician records in Maryland.
All 877 in Maryland → Every provider in Germantown → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Walter Basen, M.D.Germantown, MD 208761437120102
- Renu Berry, M.D.Germantown, MD 208761356312201
- Alan Bobb, M.D.Germantown, MD 208761669443321
- Bruce Bortnick, M.D.Germantown, MD 208761740251271
- Jonathan Bowles, M.D.Germantown, MD 208761083685853
- Deborah Burke, M.D.Germantown, MD 208761295706968
- Jordan Caplan, MDGermantown, MD 208761770840704
- Velma Casanova, M.D.Germantown, MD 208761255302121
Common questions
What is Robert Isaacs, M.D.'s NPI number?
Robert Isaacs, M.D.'s National Provider Identifier (NPI) is 1669443446, issued on Jan 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert Isaacs, M.D. located?
The NPPES record lists a practice address at 20410 Observation Dr, Germantown, MD, 20876. Phone: (301) 948-5700. Providers update this record themselves, so call before visiting.
How can I verify Robert Isaacs, M.D.'s license?
NPPES lists Maryland license number D38257, 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.
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.