Quick answers
- Where does John M. Niehoff see patients?
- Medicare's clinician data lists 1 practice location in Baltimore, MD. Call before your visit to confirm the address.
- What is John M. Niehoff's specialty?
- Medicare lists Family Practice as the primary specialty, and also Sports Medicine.
- Does John M. Niehoff accept Medicare assignment?
- Yes. Medicare's clinician data says John M. Niehoff accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for John M. Niehoff?
- (410) 687-2300, as listed in official Medicare / NPI Registry data.
- What is John M. Niehoff's NPI number?
- 1447229349. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where John M. Niehoff is enrolled with Medicare (CMS data updated 2026-10-02).
- 9101 Franklin Square Dr, Suite 206Baltimore, MD 21237 (410) 687‑2300
Group practices
Medicare enrollment lists John M. Niehoff as a member of this group (CMS data updated 2026-10-02).
- MedStar Medical Group II LLC3,767 clinicians in the group
Specialties
- Family Practiceprimary
- Sports Medicinealso
Other family doctors in Baltimore
Clinicians with the same Medicare primary specialty in Baltimore, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Pennsylvania State University College Of Medicine |
| Graduation year | 1981 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1447229349 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians