Tonya M. Santiago, NP
Nurse Practitioner · Upland, CA
Tonya M. Santiago, NP is a nurse practitioner with a practice address in Upland, California, and NPI 1205158649, issued on Feb 26, 2010. Check the license (California NP19145, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Tonya M. Santiago
- Credential
- NP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- NP19145 CA
Self-reported in NPPES; status is on the state search - Practice location
- 999 San Bernardino RD, Upland, CA 91786
- Phone
- (909) 985-2811
- Enumerated
- Feb 26, 2010
- Record last updated
- Feb 26, 2010 (not updated in 16 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100816000081); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 8,223 in California → Look up another NPI →
Also registered at 999 San Bernardino RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Alexander ArzooStudent in an Organized Health Care Education/Training Program1891635629
- Liezl Avila, D.O.Emergency Medicine Physician1487064515
Verify Tonya M. Santiago in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license NP19145Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average nurse practitioner in 2024
91 Medicare Part D claims for 66 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen11 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
- Regents OF The University OFOrange, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tonya M. Santiago among 8,223 nurse practitioner records in California
Tonya M. Santiago, NP is one of 8,223 nurse practitioner records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 32% of them.
- NPI issued2010 · 32% of these records are older, 66% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated2009 · median 2017 among the 3,425 with a school on file
- Record last updated2010 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
25 nurse practitioner records list a practice address in Upland
They are 25 of the 1,846 NPPES records with a practice address in Upland, and 8,223 nurse practitioner records in California.
All 8,223 in California → Every provider in Upland → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Gay Beseth, NPUpland, CA 917861346398286
- Cheryl Bock, NPUpland, CA 917861518980374
- Jody Bouma, N.P.Upland, CA 917861841425279
- Victor Campos, FNPUpland, CA 917861710034350
- Marie Carin-Parkes, NPUpland, CA 917861962687277
- David Frandsen, NPUpland, CA 917861710900584
- Chonn Gonzales, RNPUpland, CA 917861558483107
- Stephanie Jenniches, NPUpland, CA 917861114940988
Common questions
What is Tonya M. Santiago, NP's NPI number?
Tonya M. Santiago, NP's National Provider Identifier (NPI) is 1205158649, issued on Feb 26, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Tonya M. Santiago, NP located?
The NPPES record lists a practice address at 999 San Bernardino RD, Upland, CA, 91786. Phone: (909) 985-2811. Providers update this record themselves, so call before visiting.
How can I verify Tonya M. Santiago, NP's license?
NPPES lists California license number NP19145, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Tonya M. Santiago, NP prescribe under Medicare Part D?
In 2024, Tonya M. Santiago, NP had 91 Medicare Part D claims for 66 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.