Gay M. Beseth, NP
Nurse Practitioner · Upland, CA
Gay M. Beseth, NP is a nurse practitioner with a practice address in Upland, California, and NPI 1346398286, issued on Jan 8, 2007. Check the license (California NP10839, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gay M. Beseth
- Credential
- NP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- NP10839 CA
Self-reported in NPPES; status is on the state search - Practice location
- 510 N 13TH Ave, Upland, CA 91786
- Phone
- (909) 920-0525
- Enumerated
- Jan 8, 2007
- Record last updated
- Feb 16, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (909) 920-0526
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 8,223 in California → Look up another NPI →
Also registered at 510 N 13TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bryce Beseth, M.D.Surgery Physician1811929243
Verify Gay M. Beseth in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license NP10839Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average nurse practitioner in 2024
259 Medicare Part D claims for 200 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 190 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen96 claims
- Oxycodone-Acetaminophen56 claims
- Tramadol Hcl30 claims
- Xarelto29 claims
- Clopidogrel14 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.
Industry payments in 2024: $43.92
2 payments; by number, the most common kind was food and beverage; the largest payer was Ethicon US, LLC. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Gay M. Beseth among 8,223 nurse practitioner records in California
Gay M. Beseth, 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 2007, is newer than 18% of them.
- NPI issued2007 · 18% of these records are older, 73% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileNo · 42% of these records are
- Record last updated2016 · 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
- 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
- Marjan Khaleghi, NPUpland, CA 917861952635237
Common questions
What is Gay M. Beseth, NP's NPI number?
Gay M. Beseth, NP's National Provider Identifier (NPI) is 1346398286, issued on Jan 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gay M. Beseth, NP located?
The NPPES record lists a practice address at 510 N 13TH Ave, Upland, CA, 91786. Phone: (909) 920-0525. Providers update this record themselves, so call before visiting.
How can I verify Gay M. Beseth, NP's license?
NPPES lists California license number NP10839, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Gay M. Beseth, NP prescribe under Medicare Part D?
In 2024, Gay M. Beseth, NP had 259 Medicare Part D claims for 200 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.