Robert S. Mayer, M.D.
Physical Medicine & Rehabilitation Physician · Baltimore, MD
Robert S. Mayer, M.D. is a physical medicine & rehabilitation physician with a practice address in Baltimore, Maryland, and NPI 1003865585, issued on May 10, 2006. Check the license (Maryland D57380, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Robert S. Mayer
- Credential
- M.D.
- Primary taxonomy
- Physical Medicine & Rehabilitation Physician 208100000X
- License number
- D57380 MD
Self-reported in NPPES; status is on the state search - Practice location
- 600 N Wolfe St, Baltimore, MD 21287
- Phone
- (410) 532-4701
- Enumerated
- May 10, 2006
- Record last updated
- Feb 12, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicaid ID
- 687900400 MD
- Medicare enrollment
- Enrolled (PECOS I20100616000712); may accept Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 1986
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest physical medicine & rehabilitation physician records → All 330 in Maryland → Look up another NPI →
Also registered at 600 N Wolfe St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Robert S. Mayer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D57380Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% fewer Medicare Part D claims than the average physical medicine & rehabilitation physician in 2024
538 Medicare Part D claims for 60 beneficiaries, against an average of 727 among the 7,448 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 178 claims were for opioids.
Most prescribed
- Oxycodone Hcl82 claims
- Gabapentin41 claims
- Tramadol Hcl41 claims
- Baclofen38 claims
- Tizanidine Hcl34 claims
- Morphine Sulfate Er28 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Johns Hopkins UniversityBaltimore, MD
- Suburban/nrh Medical Rehabilitation IncBethesda, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert S. Mayer among 330 physical medicine & rehabilitation physician records in Maryland
Robert S. Mayer, M.D. is one of 330 physical medicine & rehabilitation physician records with a practice address in Maryland. 57% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 75% newer
- In a Medicare fileYes · 57% of these records are
- In the CMS Doctors and Clinicians fileYes · 48% of these records are
- Graduated1986 · median 2007 among the 159 with a school on file
- Record last updated2013 · 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 208100000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Physical Medicine & Rehabilitation Physician providers in Maryland
There are 330 physical medicine & rehabilitation physician records in Maryland.
All 330 in Maryland → Every provider in Baltimore → Physical Medicine & Rehabilitation Physician nationwide →
The 8 physical medicine & rehabilitation physician records with the nearest ZIP codes
- Alba Azola, MDBaltimore, MD 212871366601056
- Pablo Celnik, M.D.Baltimore, MD 212871033168505
- Akhil Chhatre, MDBaltimore, MD 212871861665952
- Jessica Engle, DOBaltimore, MD 212871194017731
- Dorianne Feldman, M.D.Baltimore, MD 212871902942212
- Erik Hoyer, MDBaltimore, MD 212871952506396
- Christina Kokorelis, MDBaltimore, MD 212871679918841
- William Moore, M.D.Baltimore, MD 212871972556652
Common questions
What is Robert S. Mayer, M.D.'s NPI number?
Robert S. Mayer, M.D.'s National Provider Identifier (NPI) is 1003865585, issued on May 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert S. Mayer, M.D. located?
The NPPES record lists a practice address at 600 N Wolfe St, Baltimore, MD, 21287. Phone: (410) 532-4701. Providers update this record themselves, so call before visiting.
How can I verify Robert S. Mayer, M.D.'s license?
NPPES lists Maryland license number D57380, 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 Robert S. Mayer, M.D. prescribe under Medicare Part D?
In 2024, Robert S. Mayer, M.D. had 538 Medicare Part D claims for 60 beneficiaries; the average among physical medicine & rehabilitation physician prescribers was 727. Part D covers Medicare prescriptions only.
What is Robert S. Mayer, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.