Stephen Williams, PA-C
NPI 1477537736 · Physician Assistant · Camp Pendleton, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Williams, PA-C is a Physician Assistant provider in Camp Pendleton, CA (NPI 1477537736).
Provider details
- NPI number
- 1477537736
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- License
- 16501 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
91 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Detection Test By Immunoassay Technique for Severe Acute Respiratory Syndrome Coronavirus87426 | 32 | $35 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 31 | $9 |
| Automated Urinalysis Test81003 | 28 | $2 |
Typical Medicare-allowed amounts for these services range $2–$35 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 80 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 174 | 55 |
| Atorvastatin Calcium | 139 | 38 |
| Omeprazole | 112 | 33 |
| Lisinopril | 99 | 31 |
| Gabapentin | 99 | 25 |
| Levothyroxine Sodium | 80 | 29 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$66 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-01
- Last updated
- 2007-07-08
Frequently asked questions
- What is Stephen Williams's NPI number?
- Stephen Williams's National Provider Identifier (NPI) is 1477537736, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Williams's specialty?
- Stephen Williams is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Stephen Williams located?
- Stephen Williams's practice location on file with NPPES is Naval Hospital Camp Pendleton, Camp Pendleton, CA 92055-5191.
- What is Stephen Williams's phone number?
- The practice phone number listed in the NPPES registry for Stephen Williams is (760) 725-7200.
- Does Stephen Williams accept Medicare?
- Stephen Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Williams's NPI active?
- Yes — Stephen Williams's NPI (1477537736) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.