Individual Healthcare Provider
Geoffrey Garland Grammer, M.D.
Provider's NPPES record last updated: July 10, 2023
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1528141017
- Primary Specialty
- Psychiatry & Neurology — Psychiatry
- Practice Location
- Olney, Maryland
- Sole Proprietor
- No
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 20, 2026, 4:42 AM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Psychiatry & Neurology
Psychiatry
Allopathic & Osteopathic Physicians
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
Taxonomy code 2084P0800X Psychiatry & Neurology
Behavioral Neurology & Neuropsychiatry
Allopathic & Osteopathic Physicians
Behavioral Neurology & Neuropsychiatry is a medical subspecialty involving the diagnosis and treatment of neurologically based behavioral issues.
Taxonomy code 2084B0040XPsychiatry & Neurology
Geriatric Psychiatry
Allopathic & Osteopathic Physicians
Geriatric Psychiatry is a subspecialty with psychiatric expertise in prevention, evaluation, diagnosis and treatment of mental and emotional disorders in the elderly, and improvement of psychiatric care for healthy and ill elderly patients.
Taxonomy code 2084P0805XInternal Medicine
Allopathic & Osteopathic Physicians
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Taxonomy code 207R00000X
Provider-Reported License Information
- Psychiatry & Neurology (Maryland)
- D0080837
- Psychiatry & Neurology (Maryland)
- D0080837
- Psychiatry & Neurology (Virginia)
- 0101056625
- Internal Medicine (Virginia)
- 0101056625
Practice Locations
Practice Location
3460 Olney Laytonsville Rd Ste 212
Olney, Maryland 20832-3701
Phone: (301) 982-3437
Additional Practice Location
15005 Shady Grove Rd Ste 400
Rockville, Maryland 20850-6321
Phone: (855) 940-4867
Additional Practice Location
1003 W 7th St # 200
Frederick, Maryland 21701-4106
Phone: (301) 245-6300
Additional Practice Location
7474 Greenway Center Dr Ste 700a
Greenbelt, Maryland 20770-3523
Phone: (301) 982-3437
Additional Practice Location
3416 Olandwood Ct
Olney, Maryland 20832-1372
Phone: (301) 969-4060
Record Information
- Enumeration Date
- October 20, 2006
- Provider's NPPES Record Last Updated
- July 10, 2023
- Certification Date
- July 10, 2023
- NPISignal NPPES Dataset
- August 2026
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