Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Regina Maria San Pedro Santiago, MD

Psychiatry Physician in Olympia, WA · enumerated 2017.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1548793649

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Registry record

Entity type Individual (Type 1)

Name Regina Maria San Pedro Santiago

Credential MD

Sex Female

Practice address 413 Lilly Rd Ne, Olympia, WA, 98506

Phone (360) 493-7060

Fax (360) 493-7562

Enumeration date Apr 5, 2017

Last updated in NPPES Jan 16, 2025

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License MD61156264 (WA) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1548793649 active?

Yes, as of the latest NPPES snapshot, NPI 1548793649 is active (record last updated 2025-01-16).

How do I verify Regina Maria Santiago's NPI record?

Cross-check NPI 1548793649 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Joyce Gilbert Pediatrics Physician · Olympia, WA NPI 1174515993 Christofer Strode Emergency Medicine Physician · Olympia, WA NPI 1649268871 Penelope Goode Emergency Medicine Physician · Olympia, WA NPI 1003891888 Shalini Jacob Internal Medicine Physician · Olympia, WA NPI 1144206038 Daniel Gilday Emergency Medicine Physician · Olympia, WA NPI 1073591889 Rebecca Russel Family Nurse Practitioner · Olympia, WA NPI 1912979253 Waleed Abraham Internal Medicine Physician · Olympia, WA NPI 1871567495 Stella Aaboe Anesthesiology Physician · Olympia, WA NPI 1306810700

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-01-16.