Quick answers
- Where does Geoffrey G. Grammer see patients?
- Medicare's clinician data lists 5 practice locations, including Frederick, MD, Kensington, MD and Rockville, MD. Call before your visit to confirm the address.
- What is Geoffrey G. Grammer's specialty?
- Medicare lists Psychiatry as the primary specialty, and also Geriatric Psychiatry.
- Does Geoffrey G. Grammer accept Medicare assignment?
- Yes. Medicare's clinician data says Geoffrey G. Grammer 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.
- Does Geoffrey G. Grammer offer telehealth?
- Medicare's clinician data says Geoffrey G. Grammer offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Geoffrey G. Grammer?
- (301) 245-6300, as listed in official Medicare / NPI Registry data.
- What is Geoffrey G. Grammer's NPI number?
- 1528141017. 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 Geoffrey G. Grammer is enrolled with Medicare (CMS data updated 2026-10-02).
- 1003 W 7th St, Suite 200Frederick, MD 21701 (301) 245‑6300
- 10605 Concord St, Suite 302Kensington, MD 20895
- 15001 Shady Grove Rd, Suite 220Rockville, MD 20850 (855) 940‑4867
- 3825 Leonardtown Rd, Suite 8Waldorf, MD 20601
- 7474 Greenway Ctr Dr, Suite 700aGreenbelt, MD 20770 (855) 940‑4867
Group practices
Medicare enrollment lists Geoffrey G. Grammer as a member of these groups (CMS data updated 2026-10-02).
- Lifespan Behavioral Health Services PC29 clinicians in the group
- Arman C. Moshyedi, MD, LLC15 clinicians in the group
Specialties
- Psychiatryprimary
- Geriatric Psychiatryalso
Other psychiatrists in Frederick
Clinicians with the same Medicare primary specialty in Frederick, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Uniformed Services Uhs Fe Hebert School Of Med |
| Graduation year | 2005 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1528141017 |
| 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