Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Robert S Mayer, MD

Individual provider Physical Medicine & Rehabilitation Physician · NPI 1003865585

Robert S Mayer, MD is registered under Physical Medicine and Rehabilitation in Baltimore, Maryland. Graduated from Northwestern University Feinberg Medical School in 1986, 40 years ago. Practices with Johns Hopkins University, a 2,855-clinician group and offers telehealth. Licensed in Maryland.

Years since qualifying
40
Trained at
Northwestern University Feinberg Medical School
Licensed in
MD
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

600 N Wolfe St
Baltimore, MD 21287-0005 Not confirmed with CMS for 13 years — call before visiting
Phone: (410) 532-4701
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physical Medicine & Rehabilitation Physician (primary) Taxonomy 208100000X · Licence D57380 (MD)

Record details

NPI number1003865585
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 10, 2006
Last updated in NPPESFebruary 12, 2013

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPHYSICAL MEDICINE AND REHABILITATION
Medical schoolNORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduated 1986 (40 years in practice)
Group practice Johns Hopkins University — 2855 clinicians
Accepts Medicare assignment Not indicated
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients402
Services billed 9,339 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Johns Hopkins University

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2855 clinicians in the practice; 12 are shown here.

Other providers in Baltimore