Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Zachary M. Shook, M.D.
Internal Medicine Physician in Richmond, VA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1386690220
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1320413 | Other | VA | AETNA HMO |
| 438929 | Other | VA | SOUTHERN HEALTH |
| 2156818 | Other | VA | UNITED HEALTHCARE |
| 010275008 | Medicaid | VA | - |
| 10009093 | Other | VA | OPTIMA |
| 193376 | Other | VA | ANTHEM BCBS |
| 7975750 | Other | VA | AETNA NON-HMO |
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
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Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-12-02.