MS. TANISHA G WILLIAMS PA
NPI 1013951417
Physician Assistant in San Bernardino, CA

Active since June 15, 2006PECOS Enrolled
94.62/100
CMS Quality Rating
1805 MEDICAL CENTER DR, SAN BERNARDINO, CA 92411(909) 887-6333(909) 887-1985 Get Directions Write a Review

NPPES record last updated: September 15, 2011. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Ms. Tanisha G Williams Pa NPPES

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

MS. TANISHA G WILLIAMS PA (NPI 1013951417) is an individual physician assistant in San Bernardino, California, licensed in California (PA15707) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1013951417
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameMS. TANISHA G WILLIAMSCredential: PA
Location Address1805 MEDICAL CENTER DRSan Bernardino, CA 92411-1217
Mailing Address2100 Powell St, Suite 900Emeryville, CA 94608-1826 · (510) 350-2673 · Fax (510) 879-9059
Fax(909) 887-1985
Sole ProprietorNo
Enumeration DateJune 15, 2006
Last NPPES UpdateSeptember 15, 2011
NPI 1013951417 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License Licensed in CA · PA15707
Definition

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

1805 MEDICAL CENTER DR, San Bernardino, CA 92411

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Ms. Tanisha G Williams Pa is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
32 services30 patients
Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
30 services29 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92411 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
$91.88 typical visit price
range $59.60 – $179.42
Typical copayment $22.97 (range $14.90 – $44.85)
Most-billed visit code 99203
Established Patient
$74.08 typical visit price
range $19.37 – $146.42
Typical copayment $18.52 (range $4.84 – $36.60)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

94.62/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality76.67
Improvement Activities40
Cost97.14

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.

Radiology (Diagnostic Radiology)
1805 MEDICAL CENTER DR
SAN BERNARDINO, CA 92411
Emergency Medicine
1805 MEDICAL CENTER DR
SAN BERNARDINO, CA 92411
Psychologist
1805 MEDICAL CENTER DR
SAN BERNARDINO, CA 92411
Psychologist
1805 MEDICAL CENTER DR
SAN BERNARDINO, CA 92411
Anesthesiology
1805 MEDICAL CENTER DR
SAN BERNARDINO, CA 92411
Emergency Medicine
1805 MEDICAL CENTER DR
SAN BERNARDINO, CA 92411
Anesthesiology
1805 MEDICAL CENTER DR
SAN BERNARDINO, CA 92411
Anesthesiology
1805 MEDICAL CENTER DR
SAN BERNARDINO, CA 92411

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 Tanisha Williams's NPI number?

The NPI number for Tanisha Williams is 1013951417. It was assigned to this individual provider in the NPPES registry on June 15, 2006.

Where is Tanisha Williams located?

Tanisha Williams practices at 1805 Medical Center Dr, San Bernardino, CA 92411. The listed phone number is (909) 887-6333.

What is Tanisha Williams's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Tanisha Williams enrolled in Medicare?

Yes. Tanisha Williams is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Tanisha Williams was last updated on September 15, 2011. NPI Profile syncs with the weekly NPPES data releases published by CMS.