Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Gregory S. Washington, MD
Psychiatry Physician in Detroit, MI · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1568679314
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Registry record
Entity type Individual (Type 1)
Name Gregory S. Washington
Credential MD
Sex Male
Practice address 3901 Walter P Chrysler Service Dr., Detroit, MI, 48201
Phone (313) 993-3434
Fax (313) 993-3421
Enumeration date May 17, 2007
Last updated in NPPES Apr 16, 2024
Taxonomy & licenses
2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 4301084537 (MI) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What specialty is Gregory Washington?
Gregory Washington is registered in NPPES with the primary taxonomy of Psychiatry Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all → Ashok Shah Psychiatry Physician · Detroit, MI NPI 1710945043 Babu Vadlamudi Psychiatry Physician · Detroit, MI NPI 1740227735 Richard Balon Psychiatry Physician · Detroit, MI NPI 1134166846 Audrey Gilliatt Clinical Social Worker · Detroit, MI NPI 1083739007 Robert Williams Clinical Social Worker · Detroit, MI NPI 1649397639 Tina Hill - Mccants Counselor · Detroit, MI NPI 1528268489
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-16.