Orrin D. Cook, M.D.
Orrin D. Cook is a General Practice Physician provider (General Practice) practicing in Washington, DC, registered in the NPPES registry with NPI 1548322415 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1548322415 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Orrin D. Cook |
| Credential | M.D. |
| Sex | Male |
| Practice address | Washington, DC, 20593 |
| Phone | 2024755181 |
| Fax | 2024755909 |
| Enumeration date | 2006-12-15 |
| Last updated in NPPES | 2007-11-15 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208D00000X | General Practice Physician | Primary | G35763 | CA |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Copy-ready billing details
Provider: Orrin Cook, M.D. NPI: 1548322415 Taxonomy: 208D00000X (General Practice Physician) Address: Washington, DC, 20593
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1538340765 | Rorai Greenan | Individual | Independent Duty Corpsman | Washington, DC |
Verify this record
Cross-check NPI 1548322415 against the authoritative CMS record: view Orrin D. Cook on the official NPPES registry .
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. Read the full guide or validate an NPI number.
Frequently asked questions
Is NPI 1548322415 active?
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-11-15.