Kathy Chen
Physician Assistant · San Francisco, CA
Kathy Chen is a physician assistant with a practice address in San Francisco, California, and NPI 1871255927, issued on Oct 6, 2021. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kathy Chen
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 459 Geary St Ste 400, San Francisco, CA 94102
- Phone
- (415) 329-5100
- Enumerated
- Oct 6, 2021
- Record last updated
- Apr 27, 2025
- Medicare enrollment
- Enrolled (PECOS I20250423002243); accepts Medicare assignment
- Medical or professional school
- Yale University School Of Medicine, 2021
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Verify Kathy Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average physician assistant in 2024
59 Medicare Part D claims for 34 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: $1,108.64
28 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. 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
- Lavanya Krishnan MD A Medical CorporationSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kathy Chen among 14,451 physician assistant records in California
Kathy Chen 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 2021, is newer than 67% of them.
- NPI issued2021 · 67% of these records are older, 27% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2021 · 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
- Kelly Arditi, PA-CSan Francisco, CA 941021508041583
- Morgan CavanaughSan Francisco, CA 941021932960986
- Kacie Cooke, PASan Francisco, CA 941021487949707
- Michele Etzbach, PA-CSan Francisco, CA 941021588471460
- Charis Fasoldt, PASan Francisco, CA 941021447943667
- James Franicevich, NPSan Francisco, CA 941021205953676
- Melissa Heyer, PA-CSan Francisco, CA 941021043555170
- Melissa Juncker, PASan Francisco, CA 941021275534562
Common questions
What is Kathy Chen's NPI number?
Kathy Chen's National Provider Identifier (NPI) is 1871255927, issued on Oct 6, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Kathy Chen located?
The NPPES record lists a practice address at 459 Geary St Ste 400, San Francisco, CA, 94102. Phone: (415) 329-5100. Providers update this record themselves, so call before visiting.
How can I verify Kathy Chen's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Kathy Chen prescribe under Medicare Part D?
In 2024, Kathy Chen had 59 Medicare Part D claims for 34 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.