Kelliann Marie Masterson, PA
Physician Assistant · San Francisco, CA
Kelliann Marie Masterson, PA is a physician assistant with a practice address in San Francisco, California, and NPI 1275046740, issued on Nov 7, 2017. Check the license (California 55354, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kelliann Marie Masterson
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 55354 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2175 Market St, San Francisco, CA 94114
- Phone
- (888) 663-6331
- Enumerated
- Nov 7, 2017
- Record last updated
- Mar 17, 2025
- Fax
- (415) 252-7176
- Medicare enrollment
- Enrolled (PECOS I20180831001285); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 2175 Market St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Esther Brooking, PAPhysician Assistant1285057174
- Deirdre Holmes, ARNPNurse Practitioner1093979320
- Shirley Louie, F.N.P.Family Nurse Practitioner1619365384
- Jonathan Lynne, M.D.Family Medicine Physician1982975892
- Richard Medoff, MDInternal Medicine Physician1851372924
- Edward Reimann, MT/CLS, PA-CPhysician Assistant1881048510
Verify Kelliann Marie Masterson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 55354Check 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
22 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.
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: $104.00
1 payment: food and beverage; the largest payer was Vertex Pharmaceuticals Incorporated. The 64,719 providers of this specialty with any payment received $841.65 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.
Bills Medicare through one group practice
- One Medical Group IncSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kelliann Marie Masterson among 14,451 physician assistant records in California
Kelliann Marie Masterson, PA 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 2017, is newer than 47% of them.
- NPI issued2017 · 47% of these records are older, 48% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2017 · median 2018 among the 7,214 with a school on file
- Record last updated2025 · 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 Francisco → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Esther Brooking, PASan Francisco, CA 941141285057174
- Van Cam, PA-CSan Francisco, CA 941141295144822
- Maura Devereux, PA-CSan Francisco, CA 941141255562724
- Renee Kagan, PA-CSan Francisco, CA 941141154738359
- Michael Karls, PACSan Francisco, CA 941141801804737
- Martin Kramer, PA-CSan Francisco, CA 941141710001649
- Aileen Kucsera, PA-CSan Francisco, CA 941141316229230
- Elizabeth Lynch, PA-CSan Francisco, CA 941141073779609
Common questions
What is Kelliann Marie Masterson, PA's NPI number?
Kelliann Marie Masterson, PA's National Provider Identifier (NPI) is 1275046740, issued on Nov 7, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Kelliann Marie Masterson, PA located?
The NPPES record lists a practice address at 2175 Market St, San Francisco, CA, 94114. Phone: (888) 663-6331. Providers update this record themselves, so call before visiting.
How can I verify Kelliann Marie Masterson, PA's license?
NPPES lists California license number 55354, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Kelliann Marie Masterson, PA prescribe under Medicare Part D?
In 2024, Kelliann Marie Masterson, PA had 22 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.