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JAMES ANDREW WILLIAMS MD
NPI 1083355879
Emergency Medicine in Stockton, CA

Active since April 05, 2022PECOS EnrolledAccepts Medicare Assignment
1800 N CALIFORNIA ST, STOCKTON, CA 95204(209) 547-7146 Get Directions Write a Review

NPPES record last updated: November 13, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Nov 13, 2025, Jan 11, 2025, Apr 5, 2022 (3 updates tracked since 2022).

About James Andrew Williams Md NPPES

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

JAMES ANDREW WILLIAMS MD (NPI 1083355879) is an individual emergency medicine provider in Stockton, California, licensed in California (A198652) and active in the NPI registry since April 2022. He is enrolled in Medicare PECOS, is affiliated with John T Mather Memorial Hospital Of Port Jefferson, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1083355879
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameJAMES ANDREW WILLIAMSCredential: MD
Location Address1800 N CALIFORNIA STStockton, CA 95204-6019
Mailing Address1800 N California StStockton, CA 95204-6019 · (209) 547-7146
Phone(209) 547-7146
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateApril 5, 2022
Last NPPES UpdateNovember 13, 20253 updates tracked since enumeration
NPPES CertifiedNovember 13, 2025
✔ NPI 1083355879 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in CA · A198652✔ Licensed in RI · MD20843
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
1800 N CALIFORNIA ST, Stockton, CA 95204
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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

James Andrew 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 ID3870022957
PECOS Enrollment IDI20250715003408, I20250811003176, I20250903003206
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.

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

John T Mather Memorial Hospital Of Port Jefferson

Acute Care Hospitals · Port Jefferson, NY
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330185
Location75 North Country RoadPort Jefferson, NY 11777 · Suffolk County
Emergency services

Roger Williams Medical Center

Acute Care Hospitals · Providence, RI
4/5 CMS rating
OwnershipProprietary
CMS Certification Number410004
Location825 Chalkstone AvenueProvidence, RI 02908 · Providence County
Emergency services

Our Lady Of Fatima Hospital

Acute Care Hospitals · North Providence, RI
3/5 CMS rating
OwnershipProprietary
CMS Certification Number410005
Location200 High Service AvenueNorth Providence, RI 02904 · Providence County
Emergency services

South County Hospital Inc

Acute Care Hospitals · Wakefield, RI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number410008
Location100 Kenyon AveWakefield, RI 02879 · Washington County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95204 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
$90.32 typical visit price
range $58.87 – $176.60
Typical copayment $22.58 (range $14.71 – $44.15)
Most-billed visit code 99203
Established Patient
$103.36 typical visit price
range $19.28 – $144.60
Typical copayment $25.84 (range $4.82 – $36.15)
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.

MONICA CHAPPIDI DO
Student in an Organized Health Care Education/Training Program
1800 N CALIFORNIA ST
STOCKTON, CA 95204
San Joaquin County (209) 547-5949
DEEPAK GIR MD
Student in an Organized Health Care Education/Training Program
1800 N CALIFORNIA ST
STOCKTON, CA 95204
San Joaquin County (209) 547-7177
PRIYADEEP KANG MD
Student in an Organized Health Care Education/Training Program
1800 N CALIFORNIA ST
STOCKTON, CA 95204
San Joaquin County (209) 547-7181
NANCY THI NGUYEN CF-SLP
Speech-Language Pathologist
1800 N CALIFORNIA ST
STOCKTON, CA 95204
San Joaquin County (209) 943-2000
DR. VALERIE DEJESUS MD
Anesthesiology
1800 N CALIFORNIA ST
STOCKTON, CA 95204
San Joaquin County (209) 547-5716
DR. AMATYA TARAN MD
Student in an Organized Health Care Education/Training Program
1800 N CALIFORNIA ST
STOCKTON, CA 95204
San Joaquin County (209) 547-7177
LARRY GEORGE OTTERSTETTER DO
Student in an Organized Health Care Education/Training Program
1800 N CALIFORNIA ST
STOCKTON, CA 95204
San Joaquin County (209) 547-7181
SHUBHPREET KAUR SOHAL
Nurse Practitioner (Family)
1800 N CALIFORNIA ST
STOCKTON, CA 95204
San Joaquin County (209) 466-0456

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 James Williams's NPI number?

The NPI number for James Williams is 1083355879. It was assigned to this individual provider in the NPPES registry on April 5, 2022.

Where is James Williams located?

James Williams practices at 1800 N California St, Stockton, CA 95204. The listed phone number is (209) 547-7146.

What is James Williams's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is James Williams enrolled in Medicare?

Yes. James 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.

Is James Williams affiliated with any hospitals?

According to CMS data, James Williams is affiliated with John T Mather Memorial Hospital Of Port Jefferson, Roger Williams Medical Center, Our Lady Of Fatima Hospital and South County Hospital Inc.

When was this NPI record last updated?

The NPPES record for James Williams was last updated on November 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months 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.