Tanisha G. Williams, PA
Physician Assistant · San Bernardino, CA
Tanisha G. Williams, PA is a physician assistant with a practice address in San Bernardino, California, and NPI 1013951417, issued on Jun 15, 2006. Check the license (California PA15707, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Tanisha G. Williams
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA15707 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1805 Medical Center Dr, San Bernardino, CA 92411
- Phone
- (909) 887-6333
- Enumerated
- Jun 15, 2006
- Record last updated
- Sep 15, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (909) 887-1985
- Entity
- Type 1 · individual
Also registered at 1805 Medical Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jillian Allard, PA-CPhysician Assistant1134470446
- Debbie Bervel, MDEmergency Medicine Physician1932113107
- Janet ChangPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1811668817
- Michelle Fischer, RDRegistered Dietitian1750875266
- Megan Hall, MPH, RDRegistered Dietitian1518795905
- Nancy Hoang, PHARMD,Pharmacist1174751333
Verify Tanisha G. Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA15707Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average physician assistant in 2024
520 Medicare Part D claims for 271 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 115 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen83 claims
- Ibuprofen63 claims
- Prednisone34 claims
- Cephalexin30 claims
- Ondansetron Odt29 claims
- Ciprofloxacin Hcl28 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 94.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
83 physician assistant records list a practice address in San Bernardino
They are 83 of the 5,645 NPPES records with a practice address in San Bernardino, and 14,451 physician assistant records in California.
All 83 in San Bernardino → All 14,451 in California → Every provider in San Bernardino →
Other physician assistant records in California
- Marcia -Galbraith, PAStockton, CA1407143274
- Danny Abad, PAOrange, CA1477158673
- Lea Dominique Abadies, PATustin, CA1124754254
- Rea Elizabeth Abaniel, P.A.-CSeal Beach, CA1396173621
- Ramina Abbasi, PA-CSignal Hill, CA1093448300
- Ariel Abbott, PA-CStockton, CA1780334342
- Barrie Abbott, PA-CAnza, CA1861602575
- Elizabeth Abbott, PA-CSan Diego, CA1437540762
- Terri Abbott, P.A.La Jolla, CA1811165566
- Angela Abboud, MMS, PA-CSanta Rosa, CA1114399334
Common questions
What is Tanisha G. Williams, PA's NPI number?
Tanisha G. Williams, PA's National Provider Identifier (NPI) is 1013951417, issued on Jun 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Tanisha G. Williams, PA located?
The NPPES record lists a practice address at 1805 Medical Center Dr, San Bernardino, CA, 92411. Phone: (909) 887-6333. Providers update this record themselves, so call before visiting.
How can I verify Tanisha G. Williams, PA's license?
NPPES lists California license number PA15707, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Tanisha G. Williams, PA prescribe under Medicare Part D?
In 2024, Tanisha G. Williams, PA had 520 Medicare Part D claims for 271 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Tanisha G. Williams, PA's MIPS final score?
The 2023 MIPS final score is 94.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.