Maria Guadalupe Thomas, NP
Primary Care Nurse Practitioner · Upland, CA
Maria Guadalupe Thomas, NP is a primary care nurse practitioner with a practice address in Upland, California, and NPI 1760066542, issued on May 8, 2021. Check the license (California 95016192, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Maria Guadalupe Thomas
- Credential
- NP
- Primary taxonomy
- Primary Care Nurse Practitioner 363LP2300X
- License number
- 95016192 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1317 W Foothill Blvd, Upland, CA 91786
- Phone
- (909) 981-5882
- Enumerated
- May 8, 2021
- Record last updated
- May 8, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (909) 373-2828
- Entity
- Type 1 · individual
8 nearest primary care nurse practitioner records → All 1,131 in California → Look up another NPI →
Also registered at 1317 W Foothill Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Maria Guadalupe Thomas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95016192Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
33% fewer Medicare Part D claims than the average primary care nurse practitioner in 2024
1,005 Medicare Part D claims for 140 beneficiaries, against an average of 1,492 among the 5,992 providers of this specialty who prescribed in Part D.
Most prescribed
- Calcium Acetate118 claims
- Sevelamer Carbonate96 claims
- Amlodipine Besylate65 claims
- Velphoro45 claims
- Lokelma43 claims
- Atorvastatin Calcium39 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.
Maria Guadalupe Thomas among 1,131 primary care nurse practitioner records in California
Maria Guadalupe Thomas, NP is one of 1,131 primary care nurse practitioner records with a practice address in California. 63% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 57% of them.
- NPI issued2021 · 57% of these records are older, 36% newer
- In a Medicare fileYes · 63% of these records are
- In the CMS Doctors and Clinicians fileNo · 35% of these records are
- Record last updated2021 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP2300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Primary Care Nurse Practitioner providers in California
There are 1,131 primary care nurse practitioner records in California.
All 1,131 in California → Every provider in Upland → Primary Care Nurse Practitioner nationwide →
The 8 primary care nurse practitioner records with the nearest ZIP codes
- Sadeg AldolaimUpland, CA 917861972099521
- Kimberly Fung, FNP-BCUpland, CA 917861780225391
- Diana KariheUpland, CA 917861467911495
- Melissa Kramer, FNPUpland, CA 917861780447706
- Kyung LeeUpland, CA 917861972104453
- Shemika Carter, NURSE PRACTITIONERWalnut, CA 917891538635693
- Stephen JoeWalnut, CA 917891548758386
- Ashley Shaw, FNP-CWalnut, CA 917891821536137
Common questions
What is Maria Guadalupe Thomas, NP's NPI number?
Maria Guadalupe Thomas, NP's National Provider Identifier (NPI) is 1760066542, issued on May 8, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Maria Guadalupe Thomas, NP located?
The NPPES record lists a practice address at 1317 W Foothill Blvd, Upland, CA, 91786. Phone: (909) 981-5882. Providers update this record themselves, so call before visiting.
How can I verify Maria Guadalupe Thomas, NP's license?
NPPES lists California license number 95016192, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Maria Guadalupe Thomas, NP prescribe under Medicare Part D?
In 2024, Maria Guadalupe Thomas, NP had 1,005 Medicare Part D claims for 140 beneficiaries; the average among primary care nurse practitioner prescribers was 1,492. 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.