NPPES file of Aug 9, 2026

Sonja Williams, FNP

Family Nurse Practitioner · Biddeford, ME

Sonja Williams, FNP is a family nurse practitioner with a practice address in Biddeford, Maine, and NPI 1649050865, issued on Oct 4, 2023. Check the license (Maine CNP231544, as entered in NPPES) with the Maine board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1649050865
Name
Sonja Williams
Credential
FNP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
CNP231544 ME
Self-reported in NPPES; status is on the state search
Practice location
46 Barra RD Ste 201-202, Biddeford, ME 04005
Phone
(334) 920-7282
Enumerated
Oct 4, 2023
Record last updated
Oct 4, 2023
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest family nurse practitioner records → All 1,274 in Maine → Look up another NPI →

Verify Sonja Williams in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Maine board licenses this profession
    Search for license CNP231544    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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57% fewer Medicare Part D claims than the average family nurse practitioner in 2024

562 Medicare Part D claims for 181 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 11 claims were for opioids.

  1. Sonja Williams562
  2. Specialty average1,305

Most prescribed

  1. Amlodipine Besylate23 claims
  2. Levothyroxine Sodium23 claims
  3. Lisinopril17 claims
  4. Metformin Hcl Er17 claims
  5. Rosuvastatin Calcium17 claims
  6. Meloxicam15 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Sonja Williams among 1,274 family nurse practitioner records in Maine

Sonja Williams, FNP is one of 1,274 family nurse practitioner records with a practice address in Maine. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 84% of them.

  • NPI issued2023 · 84% of these records are older, 11% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileNo · 64% of these records are
  • Record last updated2023 · 46% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

23 family nurse practitioner records list a practice address in Biddeford

They are 23 of the 905 NPPES records with a practice address in Biddeford, and 1,274 family nurse practitioner records in Maine.

All 1,274 in Maine → Every provider in Biddeford → Family Nurse Practitioner nationwide →

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Lisa Bartley, FNPBiddeford, ME 040051922043991
  2. Marilou Bartus, NPBiddeford, ME 040051386080984
  3. Sarah Baskind, FNP-BCBiddeford, ME 040051902289234
  4. Louise Beaulieu, FNPBiddeford, ME 040051528173499
  5. Amy Bergeron, FNPBiddeford, ME 040051417944455
  6. Marylou Burgess, NPBiddeford, ME 040051215043757
  7. Amanda DucaBiddeford, ME 040051679079248
  8. Jill Gagne, FNPBiddeford, ME 040051306111596

Common questions

What is Sonja Williams, FNP's NPI number?

Sonja Williams, FNP's National Provider Identifier (NPI) is 1649050865, issued on Oct 4, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Sonja Williams, FNP located?

The NPPES record lists a practice address at 46 Barra RD Ste 201-202, Biddeford, ME, 04005. Phone: (334) 920-7282. Providers update this record themselves, so call before visiting.

How can I verify Sonja Williams, FNP's license?

NPPES lists Maine license number CNP231544, as entered by the provider. Search the Maine board that licenses this profession; the NPPES record confirms identity only.

How much does Sonja Williams, FNP prescribe under Medicare Part D?

In 2024, Sonja Williams, FNP had 562 Medicare Part D claims for 181 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.