Melissa Williams, CRNP
NPI 1578953865 · Family Nurse Practitioner · Philadelphia, PA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Melissa Williams, CRNP is a Family Nurse Practitioner provider in Philadelphia, PA (NPI 1578953865).
Provider details
- NPI number
- 1578953865
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CRNP
- Sex
- Female
- Sole proprietor
- No
- License
- SP014736 (PA)
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 tenure33% of score
11 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Amlodipine Besylate | 26 |
| Atorvastatin Calcium | 20 |
| Metformin Hclbrand: Metformin Hcl Er | 13 |
| Losartan Potassium | 11 |
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.
$227 across 12 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)
- 3300 Henry AveSuite 500Philadelphia, PA 19129-1121Phone: (215) 581-2046
Registry dates
- Enumerated
- 2015-01-26
- Last updated
- 2024-05-10
- Certified
- 2024-05-10
Frequently asked questions
- What is Melissa Williams's NPI number?
- Melissa Williams's National Provider Identifier (NPI) is 1578953865, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melissa Williams's specialty?
- Melissa Williams is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Melissa Williams located?
- Melissa Williams's practice location on file with NPPES is 1200 Callowhill St Ste 101, Philadelphia, PA 19123-3658.
- What is Melissa Williams's phone number?
- The practice phone number listed in the NPPES registry for Melissa Williams is (215) 825-8220.
- Does Melissa Williams accept Medicare?
- Melissa Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Melissa Williams's NPI active?
- Yes — Melissa Williams's NPI (1578953865) is active in the NPPES registry as of the last update on 2024-05-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.