Sonja Williams, FNP
NPI 1649050865 · Family Nurse Practitioner · Biddeford, ME
Sonja Williams, FNP is a Family Nurse Practitioner provider in Biddeford, ME (NPI 1649050865).
Provider details
- NPI number
- 1649050865
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- CNP231544 (ME)
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 tenure28% of score
2 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
14 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 14 | $79 |
Typical Medicare-allowed amounts for these services range $79–$79 (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 · 13 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Amlodipine Besylate | 23 |
| Levothyroxine Sodium | 23 |
| Lisinopril | 17 |
| Metformin Hclbrand: Metformin Hcl Er | 17 |
| Rosuvastatin Calcium | 17 |
| Meloxicam | 15 |
| Atorvastatin Calcium | 14 |
| Omeprazole | 13 |
| Albuterol Sulfate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2023-10-04
- Last updated
- 2023-10-04
- Certified
- 2023-10-04
Frequently asked questions
- What is Sonja Williams's NPI number?
- Sonja Williams's National Provider Identifier (NPI) is 1649050865, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sonja Williams's specialty?
- Sonja Williams is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sonja Williams located?
- Sonja Williams's practice location on file with NPPES is 46 Barra Rd Ste 201-202, Biddeford, ME 04005-9459.
- What is Sonja Williams's phone number?
- The practice phone number listed in the NPPES registry for Sonja Williams is (334) 920-7282.
- Is Sonja Williams's NPI active?
- Yes — Sonja Williams's NPI (1649050865) is active in the NPPES registry as of the last update on 2023-10-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.