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TOM ELLIS WILLIAMS MD
NPI 1932393220
Family Medicine in San Ysidro, CA

Active since August 30, 2007PECOS EnrolledAccepts Medicare Assignment
4004 BEYER BLVD, SAN YSIDRO, CA 92173(619) 428-1330(619) 428-7952 Get Directions Write a Review

NPPES record last updated: December 1, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Tom Ellis Williams Md NPPES

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

TOM ELLIS WILLIAMS MD (NPI 1932393220) is an individual family medicine provider in San Ysidro, California, licensed in California (A100446) and active in the NPI registry since August 2007. He is enrolled in Medicare PECOS and is a graduate of Other (2003).

NPPES Registry Identity

NPI1932393220
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameTOM ELLIS WILLIAMSCredential: MD
Location Address4004 BEYER BLVDSan Ysidro, CA 92173-2007
Mailing Address4004 Beyer BlvdSan Ysidro, CA 92173-2007 · (619) 428-1330 · Fax (619) 428-7952
Phone(619) 428-1330
Fax(619) 428-7952
Sole ProprietorNo
Medical School CMSOtherGraduated 2003
Enumeration DateAugust 30, 2007
Last NPPES UpdateDecember 1, 2021
✔ NPI 1932393220 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · A100446
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
4004 BEYER BLVD, San Ysidro, CA 92173
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Tom Ellis Williams Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9335239672
PECOS Enrollment IDI20071226000330
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 92173 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
$94.87 typical visit price
range $62.10 – $184.71
Typical copayment $23.71 (range $15.52 – $46.17)
Most-billed visit code 99203
Established Patient
$108.42 typical visit price
range $20.62 – $151.42
Typical copayment $27.10 (range $5.15 – $37.85)
Most-billed visit code 99214
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.

CENTRO DE SALUD DE LA COMMUNIDAD DE SAN YSIDRO, INC
Clinic/Center (Rural Health)
4004 BEYER BLVD
SAN YSIDRO, CA 92173
San Diego County (619) 205-6331
VIRGINIA LIERAS SANCHEZ RN
Registered Nurse (Infection Control)
4004 BEYER BLVD
SAN YSIDRO, CA 92173
San Diego County (619) 662-4100
INGA NEILSEN GONZALEZ MFC
Marriage & Family Therapist
4004 BEYER BLVD
SAN YSIDRO, CA 92173
San Diego County (619) 428-4463
HUNG GI PA-C
Physician Assistant (Medical)
4004 BEYER BLVD
SAN YSIDRO, CA 92173
San Diego County (619) 662-4100
SHARONYA SHRIVASTAVA
Internal Medicine
4004 BEYER BLVD
SAN YSIDRO, CA 92173
San Diego County (619) 662-4100
DR. MARTIN VALERA CONSUNJI MD
Internal Medicine
4004 BEYER BLVD
SAN YSIDRO, CA 92173
San Diego County (619) 662-4100
DR. PATRICIA A GOMEZ-NARANJO MD
Psychiatry & Neurology (Child & Adolescent Psychiatry)
4004 BEYER BLVD
SAN YSIDRO, CA 92173
San Diego County (619) 428-4463
KRISTINE PORTO MADURSKI PA
Physician Assistant
4004 BEYER BLVD
SAN YSIDRO, CA 92173
San Diego County (619) 428-4463

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 Tom Williams's NPI number?

The NPI number for Tom Williams is 1932393220. It was assigned to this individual provider in the NPPES registry on August 30, 2007.

Where is Tom Williams located?

Tom Williams practices at 4004 Beyer Blvd, San Ysidro, CA 92173. The listed phone number is (619) 428-1330.

What is Tom Williams's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Tom Williams enrolled in Medicare?

Yes. Tom Williams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Tom Williams was last updated on December 1, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.