1. Home
  2. Directory
  3. California
  4. Palo Alto
  5. Surgery
  6. NPI Profile

PERISA RUHI-WILLIAMS MD
NPI 1760989362
Surgery in Palo Alto, CA

Active since April 10, 2018PECOS Enrolled
300 PASTEUR DR, PALO ALTO, CA 94304(650) 723-4000 Get Directions Write a Review

NPPES record last updated: February 3, 2025. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Feb 3, 2025, Nov 29, 2021, Oct 2, 2018 and 1 more (4 updates tracked since 2018).

About Perisa Ruhi-williams Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

PERISA RUHI-WILLIAMS MD (NPI 1760989362) is an individual surgery provider in Palo Alto, California, licensed in California (A165142) and active in the NPI registry since April 2018. She is enrolled in Medicare PECOS, maintains a secondary practice location in Orange, and is a graduate of Virginia Tech Carilion School Of Medicine (2018).

NPPES Registry Identity

NPI1760989362
Entity TypeIndividualFemale
Primary Taxonomy208600000X
Provider Legal NamePERISA RUHI-WILLIAMSCredential: MD
Location Address300 PASTEUR DRPalo Alto, CA 94304-2203
Mailing Address300 Pasteur DrPalo Alto, CA 94304-2203 · (650) 723-4000
Phone(650) 723-4000
Sole ProprietorNo
Medical School CMSVirginia Tech Carilion School Of MedicineGraduated 2018
Enumeration DateApril 10, 2018
Last NPPES UpdateFebruary 3, 20254 updates tracked since enumeration
NPPES CertifiedFebruary 3, 2025
✔ NPI 1760989362 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License✔ Licensed in CA · A165142
Definition

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
300 PASTEUR DR, Palo Alto, CA 94304
Open in Google Maps ↗

Secondary Practice Location 1

Location 1333 City Blvd W Ste 1600Orange, CA 92868-5903 · Phone (714) 456-5532

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Perisa Ruhi-williams Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID547683898
PECOS Enrollment IDI20210728003476
Eligible to Order & Refer– Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94304 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$106.47 typical visit price
range $70.37 – $206.04
Typical copayment $26.61 (range $17.59 – $51.51)
Most-billed visit code 99203
Established Patient
$86.56 typical visit price
range $23.96 – $169.60
Typical copayment $21.64 (range $5.99 – $42.40)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

PAUL DAVID MARTIN M.D.
Anesthesiology
300 PASTEUR DR
PALO ALTO, CA 94304
Santa Clara County (650) 723-4000
IRENE H JUN MD
Pediatrics
300 PASTEUR DR, SUMC - PEDS PHYSICIAN BILLING MC: 5530
PALO ALTO, CA 94304
Santa Clara County (465) 049-8739
DR. DEBORAH DEE SANDERSON PHYSICAL THERAPIST
Physical Therapist
300 PASTEUR DR
PALO ALTO, CA 94304
Santa Clara County (650) 723-6701
DR. MOLLY TIMMERMAN DO
Physical Medicine & Rehabilitation
300 PASTEUR DR
PALO ALTO, CA 94304
Santa Clara County (650) 723-2206
ANDREW KEES ROORDA M.D.
Internal Medicine (Gastroenterology)
300 PASTEUR DR
PALO ALTO, CA 94304
Santa Clara County (304) 293-4123
DR. CATHERINE SHARMAN REID MD
Anesthesiology
300 PASTEUR DR, DEPARTMENT OF ANESTHESIA, H3580
PALO ALTO, CA 94304
Santa Clara County (650) 723-7377
DR. ZINA SEMENOVSKAYA MD
Emergency Medicine
300 PASTEUR DR
PALO ALTO, CA 94304
Santa Clara County (718) 836-6600
JULIE G REED R.N.
Nurse Practitioner (Pediatrics)
300 PASTEUR DR
PALO ALTO, CA 94304
Santa Clara County (650) 723-4000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Perisa Ruhi-williams's NPI number?

The NPI number for Perisa Ruhi-williams is 1760989362. It was assigned to this individual provider in the NPPES registry on April 10, 2018.

Where is Perisa Ruhi-williams located?

Perisa Ruhi-williams practices at 300 Pasteur Dr, Palo Alto, CA 94304. The listed phone number is (650) 723-4000.

What is Perisa Ruhi-williams's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Perisa Ruhi-williams enrolled in Medicare?

Yes. Perisa Ruhi-williams is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Perisa Ruhi-williams was last updated on February 3, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.