Regina Maria San Pedro Santiago, MD
Psychiatry Physician · Olympia, WA
Regina Maria San Pedro Santiago, MD is a psychiatry physician with a practice address in Olympia, Washington, and NPI 1548793649, issued on Apr 5, 2017. Check the license (Washington MD61156264, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Regina Maria San Pedro Santiago
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- MD61156264 WA
Self-reported in NPPES; status is on the state search - Practice location
- 413 Lilly RD NE, Olympia, WA 98506
- Phone
- (360) 493-7060
- Enumerated
- Apr 5, 2017
- Record last updated
- Jan 16, 2025
- Fax
- (360) 493-7562
- Medicare enrollment
- Enrolled (PECOS I20210908002139); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 1,195 in Washington → Look up another NPI →
Also registered at 413 Lilly RD NE
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Regina Maria San Pedro Santiago in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD61156264Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% fewer Medicare Part D claims than the average psychiatry physician in 2024
509 Medicare Part D claims for 54 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Trazodone Hcl38 claims
- Atorvastatin Calcium22 claims
- Prazosin Hcl21 claims
- Quetiapine Fumarate21 claims
- Olanzapine20 claims
- Pantoprazole Sodium20 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Providence Health And Services WashingtonOlympia, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Regina Maria San Pedro Santiago among 1,195 psychiatry physician records in Washington
Regina Maria San Pedro Santiago, MD is one of 1,195 psychiatry physician records with a practice address in Washington. 61% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 84% of them.
- NPI issued2017 · 84% of these records are older, 13% newer
- In a Medicare fileYes · 61% of these records are
- In the CMS Doctors and Clinicians fileYes · 39% of these records are
- Graduated2012 · median 2007 among the 462 with a school on file
- Record last updated2025 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in Washington
There are 1,195 psychiatry physician records in Washington.
All 1,195 in Washington → Every provider in Olympia → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Sharon Abegg, M.D.Olympia, WA 985061437291143
- Lorraine Barton-Haas, M.D.Olympia, WA 985061407891997
- George Chappell, MDOlympia, WA 985061376633156
- Douglas Green, M.D.Olympia, WA 985061306901723
- John Kamin, M.D.Olympia, WA 985061558433185
- Sarah LeisenringOlympia, WA 985061609844836
- Sara Lerner, M.D.Olympia, WA 985061801940630
- Stephen Lykins, MDOlympia, WA 985061194805390
Common questions
What is Regina Maria San Pedro Santiago, MD's NPI number?
Regina Maria San Pedro Santiago, MD's National Provider Identifier (NPI) is 1548793649, issued on Apr 5, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Regina Maria San Pedro Santiago, MD located?
The NPPES record lists a practice address at 413 Lilly RD NE, Olympia, WA, 98506. Phone: (360) 493-7060. Providers update this record themselves, so call before visiting.
How can I verify Regina Maria San Pedro Santiago, MD's license?
NPPES lists Washington license number MD61156264, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Regina Maria San Pedro Santiago, MD prescribe under Medicare Part D?
In 2024, Regina Maria San Pedro Santiago, MD had 509 Medicare Part D claims for 54 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.