William Tyson Buis
Family Nurse Practitioner · San Francisco, CA
William Tyson Buis is a family nurse practitioner with a practice address in San Francisco, California, and NPI 1326544347, issued on Mar 30, 2018. Check the license (California 95011275, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Tyson Buis
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 95011275 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2340 Clay St FL 5, San Francisco, CA 94115
- Phone
- (415) 600-0151
- Enumerated
- Mar 30, 2018
- Record last updated
- Jun 19, 2025
- Fax
- (415) 366-7559
- Medicare enrollment
- Enrolled (PECOS I20190708000241); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →
Also registered at 2340 Clay St FL 5
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Tyson Buis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95011275Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average family nurse practitioner in 2024
257 Medicare Part D claims for 204 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin-Clavulanate Potass28 claims
- Cephalexin25 claims
- Doxycycline Monohydrate23 claims
- Nitrofurantoin Mono-Macro19 claims
- Azithromycin14 claims
- Doxycycline Hyclate11 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
- Sutter Bay Medical FoundationSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Tyson Buis among 16,966 family nurse practitioner records in California
William Tyson Buis is one of 16,966 family nurse practitioner records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 45% of them.
- NPI issued2018 · 45% of these records are older, 50% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2018 · median 2019 among the 6,793 with a school on file
- Record last updated2025 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
662 family nurse practitioner records list a practice address in San Francisco
They are 662 of the 38,143 NPPES records with a practice address in San Francisco, and 16,966 family nurse practitioner records in California.
All 16,966 in California → Every provider in San Francisco → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Catherine Grace Alejo, NPSan Francisco, CA 941151932273521
- Jill Baker, MSN, FNPSan Francisco, CA 941151477628881
- Cheri Barzottini, MSN, FNPSan Francisco, CA 941151336219443
- Sherry Couto, NPSan Francisco, CA 941151477586451
- Marianne Lakamp, FNPSan Francisco, CA 941151679646277
- Mideo Luk, NPSan Francisco, CA 941151275630188
- Evelyn Martinez, NPSan Francisco, CA 941151760410591
- Lisa Mihaly, RN, FNPSan Francisco, CA 941151770508186
Common questions
What is William Tyson Buis's NPI number?
William Tyson Buis's National Provider Identifier (NPI) is 1326544347, issued on Mar 30, 2018. An NPI identifies a provider in billing; it is not a license.
Where is William Tyson Buis located?
The NPPES record lists a practice address at 2340 Clay St FL 5, San Francisco, CA, 94115. Phone: (415) 600-0151. Providers update this record themselves, so call before visiting.
How can I verify William Tyson Buis's license?
NPPES lists California license number 95011275, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does William Tyson Buis prescribe under Medicare Part D?
In 2024, William Tyson Buis had 257 Medicare Part D claims for 204 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.