Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Russell Wayne Sawyer, M.D.
Surgery Physician in Sonoma, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1700815305
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Registry record
Entity type Individual (Type 1)
Name Dr. Russell Wayne Sawyer
Credential M.D.
Sex Male
Practice address 246 Perkins St, Sonoma, CA, 95476
Phone (707) 938-7690
Fax (844) 581-1700
Enumeration date Jul 3, 2006
Last updated in NPPES Aug 27, 2019
Taxonomy & licenses
2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License G66227 (CA) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| G66227 | Other | CA | STATE MEDICAL LICENSE |
| 101036100 | Other | - | FIRSTCARE |
| 85507539 | Other | NM | MEDICAID |
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
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.
What specialty is Russell Sawyer?
Russell Sawyer is registered in NPPES with the primary taxonomy of Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-08-27.