Robert Bayer, M.D.
Internal Medicine Physician · Bethesda, MD
Robert Bayer, M.D. is an internal medicine physician with a practice address in Bethesda, Maryland, and NPI 1861636094, issued on May 1, 2009. Check the license (Maryland D24439, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Robert Bayer
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- D24439 MD
Self-reported in NPPES; status is on the state search - Practice location
- 6734 Selkirk Dr, Bethesda, MD 20817
- Phone
- (301) 530-6291
- Enumerated
- May 1, 2009
- Record last updated
- May 1, 2009 (not updated in 17 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Verify Robert Bayer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D24439Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $21.00
1 payment: food and beverage; the largest payer was Virtual Incision Corporation. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Robert Bayer among 3,904 internal medicine physician records in Maryland
Robert Bayer, M.D. is one of 3,904 internal medicine physician records with a practice address in Maryland. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 61% of them.
- NPI issued2009 · 61% of these records are older, 36% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2009 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
288 internal medicine physician records list a practice address in Bethesda
They are 288 of the 7,245 NPPES records with a practice address in Bethesda, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Bethesda → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Susan BaruchBethesda, MD 208171528032976
- Brent Berger, MDBethesda, MD 208171578537429
- Dave Chen, MDBethesda, MD 208171174571293
- Brent Cole, M.D.Bethesda, MD 208171558336321
- Deborah Horwitz, MDBethesda, MD 208171770520785
- Bradley Hunter, DOBethesda, MD 208171497703581
- Kian Kaviani, MDBethesda, MD 208171003851965
- Thomas McNamara, MDBethesda, MD 208171427047877
Common questions
What is Robert Bayer, M.D.'s NPI number?
Robert Bayer, M.D.'s National Provider Identifier (NPI) is 1861636094, issued on May 1, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Robert Bayer, M.D. located?
The NPPES record lists a practice address at 6734 Selkirk Dr, Bethesda, MD, 20817. Phone: (301) 530-6291. Providers update this record themselves, so call before visiting.
How can I verify Robert Bayer, M.D.'s license?
NPPES lists Maryland license number D24439, 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.