Lucius K. Upshaw, PA-C
Physician Assistant · San Mateo, CA
Lucius K. Upshaw, PA-C is a physician assistant with a practice address in San Mateo, California, and NPI 1932350790, issued on Oct 9, 2008. Check the license (California PA19952, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Lucius K. Upshaw
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA19952 CA
Self-reported in NPPES; status is on the state search - Practice location
- 50 S San Mateo Dr, San Mateo, CA 94401
- Phone
- (650) 558-0504
- Enumerated
- Oct 9, 2008
- Record last updated
- Oct 9, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (650) 558-0323
- Medicare enrollment
- Enrolled (PECOS I20090421000162); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 50 S San Mateo Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Lois Balster, M.D.Pediatrics Physician1568578474
- Bruce Bern, M.D.Ophthalmology Physician1700954278
- Jeanne Beymer, MDPediatrics Physician1114913530
- Hayley Brown, MS, RN, FNP-CFamily Nurse Practitioner1518395169
- Stephen Buchner, MDPediatrics Physician1013938786
Verify Lucius K. Upshaw in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA19952Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average physician assistant in 2024
25 Medicare Part D claims for 16 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 16 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen14 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
- County OF San MateoSan Mateo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lucius K. Upshaw among 14,451 physician assistant records in California
Lucius K. Upshaw, PA-C is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 22% of them.
- NPI issued2008 · 22% of these records are older, 75% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2008 · median 2018 among the 7,214 with a school on file
- Record last updated2008 · 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 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Physician Assistant providers in California
There are 14,451 physician assistant records in California.
All 14,451 in California → Every provider in San Mateo → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Caitlin De CastroSan Mateo, CA 944011265219075
- Rebecca ForrestSan Mateo, CA 944011306293048
- Laurel King, PASan Mateo, CA 944011508954132
- Shelby O'HaraSan Mateo, CA 944011427762160
- Samantha Oliveira, PA-C, MS, MPHSan Mateo, CA 944011326449893
- Jose Perez, PHYSICIAN ASSISTANTSan Mateo, CA 944011336294651
- Elizabeth Quadraccia, PASan Mateo, CA 944011811936800
- Denise RosSan Mateo, CA 944011093351751
Common questions
What is Lucius K. Upshaw, PA-C's NPI number?
Lucius K. Upshaw, PA-C's National Provider Identifier (NPI) is 1932350790, issued on Oct 9, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Lucius K. Upshaw, PA-C located?
The NPPES record lists a practice address at 50 S San Mateo Dr, San Mateo, CA, 94401. Phone: (650) 558-0504. Providers update this record themselves, so call before visiting.
How can I verify Lucius K. Upshaw, PA-C's license?
NPPES lists California license number PA19952, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Lucius K. Upshaw, PA-C prescribe under Medicare Part D?
In 2024, Lucius K. Upshaw, PA-C had 25 Medicare Part D claims for 16 beneficiaries; the average among physician assistant prescribers was 830. 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.