Stacy Williams, CRNP
NPI 1538688742 · Internal Medicine Physician · Birmingham, AL
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stacy Williams, CRNP is a Internal Medicine Physician provider in Birmingham, AL (NPI 1538688742).
Provider details
- NPI number
- 1538688742
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- CRNP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 10439850-4405 (UT)
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
8 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
157 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) |
|---|---|---|
| Screening Mammography77067 | 36 | $76 |
| Screening 3d Breast Mammography77063 | 35 | $21 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 32 | $93 |
| Cervical Or Vaginal Cancer Screening; Pelvic and Clinical Breast ExaminationG0101 | 31 | $29 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 23 | $70 |
Typical Medicare-allowed amounts for these services range $21–$93 (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 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Estradiol | 70 | 37 |
| Alendronate Sodium | 68 | 14 |
| Fluconazole | 32 | 23 |
| Mirabegronbrand: Myrbetriq | 30 | — |
| Triamcinolone Acetonide | 27 | 18 |
| Valacyclovir Hclbrand: Valacyclovir | 22 | — |
| Oxybutynin Chloridebrand: Oxybutynin Chloride Er | 15 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$104 across 5 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
- 2017-09-19
- Last updated
- 2017-09-19
Frequently asked questions
- What is Stacy Williams's NPI number?
- Stacy Williams's National Provider Identifier (NPI) is 1538688742, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stacy Williams's specialty?
- Stacy Williams is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stacy Williams located?
- Stacy Williams's practice location on file with NPPES is 1720 2nd Ave S, Birmingham, AL 35294-0004.
- What is Stacy Williams's phone number?
- The practice phone number listed in the NPPES registry for Stacy Williams is (205) 934-0866.
- Does Stacy Williams accept Medicare?
- Stacy Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stacy Williams's NPI active?
- Yes — Stacy Williams's NPI (1538688742) is active in the NPPES registry as of the last update on 2017-09-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.