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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MR. STEPHEN CRAIG WILLIAMS PA-C
NPI 1477537736
Physician Assistant in Camp Pendleton, CA

Active since December 01, 2005PECOS Enrolled
NAVAL HOSPITAL CAMP PENDLETON, BLD H-100, CAMP PENDLETON, CA 92055(760) 725-7200 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Mr. Stephen Craig Williams Pa-c NPPES

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

MR. STEPHEN CRAIG WILLIAMS PA-C (NPI 1477537736) is an individual physician assistant in Camp Pendleton, California, licensed in California (16501) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS and is a graduate of Other (1998).

NPPES Registry Identity

NPI1477537736
Entity TypeIndividualMale
Primary Taxonomy363A00000X
Provider Legal NameMR. STEPHEN CRAIG WILLIAMSCredential: PA-C
Location AddressNAVAL HOSPITAL CAMP PENDLETON, BLD H-100Camp Pendleton, CA 92055-5191
Mailing AddressNaval Hospital Camp Pendleton, Bld H-100Camp Pendleton, CA 92055-5191 · (760) 725-7200
Phone(760) 725-7200
Sole ProprietorNo
Medical School CMSOtherGraduated 1998
Enumeration DateDecember 1, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1477537736 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 · 16501
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.
NAVAL HOSPITAL CAMP PENDLETON, Camp Pendleton, CA 92055
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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

Mr. Stephen Craig Williams Pa-c 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 ID2163451972
PECOS Enrollment IDI20050811000254
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 3

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.

Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus 87426
An immunoassay test for severe acute respiratory syndrome coronavirus is a diagnostic tool. It uses your body's immune response to detect the presence of the virus. It involves taking a sample, usually from your nose or throat, which is then analyzed in a lab for signs of the virus.
32 services29 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
31 services26 patients
Automated urinalysis test 81003
An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.
28 services24 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92055 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
$76.87 typical visit price
range $20.62 – $151.42
Typical copayment $19.21 (range $5.15 – $37.85)
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.

DR. DANIEL JOSEPH DESANTIS MD
Internal Medicine (Cardiovascular Disease)
NAVAL HOSPITAL CAMP PENDLETON, 200 MERCY CIRCLE
OCEANSIDE, CA 92055
San Diego County (760) 716-4061
DR. ROBERT SETH WALL M.D.
Psychiatry & Neurology (Neurology)
NAVAL HOSPITAL CAMP PENDLETON, BUILDING H-100
CAMP PENDLETON, CA 92055
San Diego County (760) 725-1066
TOMMY BERNARD WHITE DMD
Dentist (Prosthodontics)
NAVAL HOSPITAL CAMP PENDLETON, DENTAL DEPARTMENT
CAMP PENDLETON, CA 92055
San Diego County (760) 725-1200
DR. PATCHO N SANTIAGO M.D.
Psychiatry & Neurology (Psychiatry)
NAVAL HOSPITAL CAMP PENDLETON, #555191
CAMP PENDLETON, CA 92055
San Diego County (760) 725-1555
MARY PATRICIA MICHEL NP
Nurse Practitioner (Pediatrics)
NAVAL HOSPITAL CAMP PENDLETON, BUILDING H-100
CAMP PENDLETON, CA 92055
San Diego County (760) 725-1578
DR. CHERYL L PATZER O.D.
Optometrist
NAVAL HOSPITAL CAMP PENDLETON
CAMP PENDLETON, CA 92055
San Diego County (760) 725-5912
SAMANTHA AUREY GONZALEZ DMD
Dentist (General Practice)
NAVAL HOSPITAL CAMP PENDLETON, 200 MERCY CIRCLE
CAMP PENDLETON, CA 92055
San Diego County (619) 922-1208
JESSICA HEROLD DO
Emergency Medicine
NAVAL HOSPITAL CAMP PENDLETON, 200 MERCY CIRCLE
CAMP PENDLETON, CA 92055
San Diego County (760) 725-1288

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 Stephen Williams's NPI number?

The NPI number for Stephen Williams is 1477537736. It was assigned to this individual provider in the NPPES registry on December 1, 2005.

Where is Stephen Williams located?

Stephen Williams practices at Naval Hospital Camp Pendleton Bld H-100, Camp Pendleton, CA 92055. The listed phone number is (760) 725-7200.

What is Stephen Williams's specialty?

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

Is Stephen Williams enrolled in Medicare?

Yes. Stephen 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 Stephen Williams was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 30 days 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.