Katherine Wei
Family Medicine Physician · San Rafael, CA
Katherine Wei is a family medicine physician with a practice address in San Rafael, California, and NPI 1386177004, issued on Apr 10, 2017. Check the license (California A159166, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Katherine Wei
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A159166 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3110 Kerner Blvd, San Rafael, CA 94901
- Phone
- (415) 448-1500
- Enumerated
- Apr 10, 2017
- Record last updated
- Oct 19, 2022
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 3110 Kerner Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Diana AguilarSocial Worker1942985981
- Hannah Bichkoff, MSW/ASWClinical Social Worker1518487727
- Alexander ChavarriaClinical Social Worker1013529338
- Eunkyo Cho, DDSGeneral Practice Dentistry1003264870
- Audrey Combs, FNPPrimary Care Nurse Practitioner1952844946
Verify Katherine Wei in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A159166Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average family medicine physician in 2024
764 Medicare Part D claims for 202 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 16 claims were for opioids.
Most prescribed
- Atorvastatin Calcium70 claims
- Amlodipine Besylate56 claims
- Metformin Hcl45 claims
- Jardiance27 claims
- Omeprazole24 claims
- Tamsulosin Hcl22 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.
Katherine Wei among 17,133 family medicine physician records in California
Katherine Wei is one of 17,133 family medicine physician records with a practice address in California. 81% 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 79% of them.
- NPI issued2017 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2022 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
37 family medicine physician records list a practice address in San Rafael
They are 37 of the 3,159 NPPES records with a practice address in San Rafael, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in San Rafael → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Mark Agness, M.D.Marysville, CA 949011609816743
- Michael Frumkin, MDSan Rafael, CA 949011154382158
- Darell Hawley, DOSan Rafael, CA 949011295484962
- Iver Juster, MDSan Rafael, CA 949011073437026
- Kenneth Lossing, DOSan Rafael, CA 949011891884243
- Steven Segerstrom, M.DMarysville, CA 949011205876240
- Suzanna Sherer, NPSan Rafael, CA 949011336630334
- Allison Slater, MD, MBESan Rafael, CA 949011790362085
Common questions
What is Katherine Wei's NPI number?
Katherine Wei's National Provider Identifier (NPI) is 1386177004, issued on Apr 10, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Wei located?
The NPPES record lists a practice address at 3110 Kerner Blvd, San Rafael, CA, 94901. Phone: (415) 448-1500. Providers update this record themselves, so call before visiting.
How can I verify Katherine Wei's license?
NPPES lists California license number A159166, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Katherine Wei prescribe under Medicare Part D?
In 2024, Katherine Wei had 764 Medicare Part D claims for 202 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.