Phillip Williams, MD
NPI 1437143716 · Obstetrics & Gynecology Physician · Flagstaff, AZ
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Phillip Williams, MD is a Obstetrics & Gynecology Physician provider in Flagstaff, AZ (NPI 1437143716).
Provider details
- NPI number
- 1437143716
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 25398 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
794 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 216 | $123 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 104 | $86 |
| Pelvic Exam99459 | 99 | $21 |
| Cervical Or Vaginal Cancer Screening; Pelvic and Clinical Breast ExaminationG0101 | 87 | $37 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 68 | $161 |
| Fitting and Insertion of Vaginal Support Device57160 | 49 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Estradiol | 116 | 64 |
| Clobetasol Propionate | 24 | 12 |
| Progesterone, Micronizedbrand: Progesterone | 23 | — |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 19 | — |
| Triamcinolone Acetonide | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$186 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
Additional practice locations (1)
- 1895 N Jasper Dr Ste 3Flagstaff, AZ 86001-1632Phone: (928) 213-6385
Registry dates
- Enumerated
- 2005-09-01
- Last updated
- 2026-04-28
- Certified
- 2026-04-28
Frequently asked questions
- What is Phillip Williams's NPI number?
- Phillip Williams's National Provider Identifier (NPI) is 1437143716, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Phillip Williams's specialty?
- Phillip Williams is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Phillip Williams located?
- Phillip Williams's practice location on file with NPPES is 1100 N San Francisco St, Flagstaff, AZ 86001-3260.
- What is Phillip Williams's phone number?
- The practice phone number listed in the NPPES registry for Phillip Williams is (928) 779-7853.
- Does Phillip Williams accept Medicare?
- Phillip Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Phillip Williams's NPI active?
- Yes — Phillip Williams's NPI (1437143716) is active in the NPPES registry as of the last update on 2026-04-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.