Perisa Ruhi-Williams, MD
Surgery Physician · Palo Alto, CA
Perisa Ruhi-Williams, MD is a surgery physician with a practice address in Palo Alto, California, and NPI 1760989362, issued on Apr 10, 2018. Check the license (California A165142, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Perisa Ruhi-Williams
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- A165142 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Palo Alto, CA 94304
- Phone
- (650) 723-4000
- Enumerated
- Apr 10, 2018
- Record last updated
- Feb 3, 2025
- Medicare enrollment
- Enrolled (PECOS I20210728003476); may accept Medicare assignment
- Medical or professional school
- Virginia Tech Carilion School Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Also registered at 300 Pasteur Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Perisa Ruhi-Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A165142Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average surgery physician in 2024
46 Medicare Part D claims for 30 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 24 claims were for opioids.
Most prescribed
- Oxycodone 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.
Industry payments in 2024: $305.43
3 payments; by number, the most common kind was food and beverage; the largest payer was Ethicon US, LLC. The 17,103 providers of this specialty with any payment received $3,513.80 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.
Perisa Ruhi-Williams among 3,118 surgery physician records in California
Perisa Ruhi-Williams, MD is one of 3,118 surgery physician 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 2018, is newer than 89% of them.
- NPI issued2018 · 89% of these records are older, 9% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2018 · median 2003 among the 1,901 with a school on file
- Record last updated2025 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in California
There are 3,118 surgery physician records in California.
All 3,118 in California → Every provider in Palo Alto → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- James Badger, M.D.Palo Alto, CA 943041255360863
- Frederick Dirbas, MDPalo Alto, CA 943041154457091
- Dan Eisenberg, M.D.Palo Alto, CA 943041437371978
- Carlos Esquivel, M.D., PH.D.Palo Alto, CA 943041942343504
- Brooke Gurland, MDPalo Alto, CA 943041891889101
- Mary Hawn, MDPalo Alto, CA 943041194751271
- Mardi Karin, M.D.Palo Alto, CA 943041275568388
- Electron Kebebew, MDPalo Alto, CA 943041972567246
Common questions
What is Perisa Ruhi-Williams, MD's NPI number?
Perisa Ruhi-Williams, MD's National Provider Identifier (NPI) is 1760989362, issued on Apr 10, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Perisa Ruhi-Williams, MD located?
The NPPES record lists a practice address at 300 Pasteur Dr, Palo Alto, CA, 94304. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.
How can I verify Perisa Ruhi-Williams, MD's license?
NPPES lists California license number A165142, 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 Perisa Ruhi-Williams, MD prescribe under Medicare Part D?
In 2024, Perisa Ruhi-Williams, MD had 46 Medicare Part D claims for 30 beneficiaries; the average among surgery physician prescribers was 147. 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.