Elyssa Williams, MSN, RN, FNP
NPI 1164927349 · Family Nurse Practitioner · Worcester, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Elyssa Williams, MSN, RN, FNP is a Family Nurse Practitioner provider in Worcester, MA (NPI 1164927349).
Provider details
- NPI number
- 1164927349
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MSN, RN, FNP
- Sex
- Female
- Sole proprietor
- No
- License
- RN2321567 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 51 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 79 | 28 |
| Lisinopril | 70 | 25 |
| Omeprazole | 56 | 19 |
| Amlodipine Besylate | 54 | 20 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 49 | 22 |
| Levothyroxine Sodium | 49 | 16 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-03-28
- Last updated
- 2023-10-17
- Certified
- 2023-10-17
Frequently asked questions
- What is Elyssa Williams's NPI number?
- Elyssa Williams's National Provider Identifier (NPI) is 1164927349, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Elyssa Williams's specialty?
- Elyssa Williams is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Elyssa Williams located?
- Elyssa Williams's practice location on file with NPPES is 19 Tacoma St, Worcester, MA 01605-3516.
- What is Elyssa Williams's phone number?
- The practice phone number listed in the NPPES registry for Elyssa Williams is (508) 595-1115.
- Does Elyssa Williams accept Medicare?
- Elyssa Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Elyssa Williams's NPI active?
- Yes — Elyssa Williams's NPI (1164927349) is active in the NPPES registry as of the last update on 2023-10-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.