Active NPI 1477537736 Individual Practitioner Male Practitioner

Stephen Craig Williams , PA-C

Physician Assistant • Camp Pendleton, CA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Stephen Williams, PA-C is a certified Physician Assistant practicing in Camp Pendleton, CA. With approximately 28 years of clinical experience since completing medical education in 1998, Stephen Williams delivers high-quality medical care to the local community at NAVAL HOSPITAL CAMP PENDLETON.

Stephen Williams is affiliated with Mountain Valleys Health Centers and accepts Medicare assignment.

Frequently performed procedures and clinical services include detection test by immunoassay technique for severe acute respiratory syndrome coronavirus, insertion of needle into vein for collection of blood sample, automated urinalysis test. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

Naval Hospital Camp Pendleton
Bld H-100

Camp Pendleton, CA 920555191

Telephone 7607257200

Medicare Profile & Education

Medical School

Other

Graduation Year

1998

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Physician Assistant in Camp Pendleton, CA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

28 Yrs +8.7 yrs vs City Avg

City Avg: 19.3 Yrs

State Avg: 11.5 Yrs

Regional Practice Density

24 Specialists

Practicing in Camp Pendleton, CA (14617 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

60.6% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Williams (28 Years) 28 Yrs

Camp Pendleton Specialty Average (19.3 Years) 19.3 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
87426 Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus	32	29	$70.47	$34.62
36415 Insertion of needle into vein for collection of blood sample	31	26	$25.00	$8.65
81003 Automated urinalysis test	28	24	$20.00	$2.20

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	47	46	$204.66	$81.32
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	39	39	$133.85	$48.91
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	30	28	$142.50	$96.46
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	11	11	$220.18	$149.99

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	278	252	$111.46	$77.36
99213 Established patient office or other outpatient visit, typically 15 minutes	97	93	$123.26	$50.23
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	15	15	$209.80	$24.92
69210 Removal of impacted ear wax	12	12	$85.08	$32.09
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	11	11	$139.45	$109.33
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	11	11	$695.09	$118.32

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	443	377	$264.25	$91.87
99213 Established patient office or other outpatient visit, typically 15 minutes	254	224	$172.73	$59.60
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	58	58	$545.86	$116.49
93000 Routine ekg using at least 12 leads including interpretation and report	33	32	$115.00	$17.43
81002 Urinalysis, manual test	14	14	$15.00	$3.41
69210 Removal of impacted ear wax	14	14	$108.43	$34.57

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	254	227	$398.64	$107.36
99213 Established patient office or other outpatient visit, typically 15 minutes	155	134	$282.74	$72.99
G0008 Administration of influenza virus vaccine	51	51	$71.00	$25.29
90662 Influenza vaccine split virus, preservative free	47	47	$165.00	$52.30
93000 Routine ekg using at least 12 leads including interpretation and report	40	39	$111.40	$17.33
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	19	19	$402.00	$117.56
81002 Urinalysis, manual test	16	16	$15.00	$3.41
69209 Removal of impacted ear wax by washing	14	12	$206.00	$15.68

Medical Specialties & State Licenses

Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

State License CA 16501

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.

Hospital & Practice Group Affiliations

Mountain Valleys Health Centers

37491 Enterprise Dr, Burney, CA 960134379

Phone: 5309999030

Mountain Valleys Health Centers

43658 Hwy 299, Fall River Mills, CA 96028

Phone: 5309999020

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

4 Associated Practitioners

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Military Health Care Provider - Independent Duty Corpsman

NPI 1013184563

Michael Martin , IDC

Military Health Care Provider - Independent Duty Corpsman

NPI 1174781314

Dustin Adams , IDC

Military Health Care Provider - Independent Duty Corpsman

NPI 1598971749

Hubert Mast

Family Medicine

NPI 1851363006

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

6 Historical Events

✅

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location July 08, 2007

Registered at NAVAL HOSPITAL CAMP PENDLETON, BLD H-100, CAMP PENDLETON, CA 920555191 (Tel: 7607257200)

📍

Updated Business Mailing Address July 08, 2007

Registered at NAVAL HOSPITAL CAMP PENDLETON, BLD H-100, CAMP PENDLETON, CA 920555191 (Tel: 7607257200)

👤

Provider Name / Credentials Updated July 08, 2007

Recorded as STEPHEN WILLIAMS, PA-C

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Physician Assistant (License #16501 in CA)

🟢

Initial NPI Registration & Enumeration December 01, 2005

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1477537736

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: December 01, 2005

Last Update: July 13, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

Naval Hospital Camp Pendleton, Bld H-100

Camp Pendleton, CA 920555191

Phone: 7607257200

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.