Fiona Williams, FNP-BC
NPI 1083352314 · Family Nurse Practitioner · Douglaston, NY
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Fiona Williams, FNP-BC is a Family Nurse Practitioner provider in Douglaston, NY (NPI 1083352314).
Provider details
- NPI number
- 1083352314
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- 703685 (NY)
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 tenure28% of score
4 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
442 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 204 | $73 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 115 | $121 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 38 | $107 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 37 | $122 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 28 | $9 |
| Initial Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 110 | 66 |
| Famotidine | 82 | 52 |
| Dicyclomine Hcl | 42 | 20 |
| Sod Picosulf/Mag Ox/Citric Acbrand: Clenpiq | 39 | 39 |
| Omeprazole | 39 | 29 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 36 | 35 |
| Linaclotidebrand: Linzess | 35 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-05-25
- Last updated
- 2026-04-14
- Certified
- 2026-04-14
Frequently asked questions
- What is Fiona Williams's NPI number?
- Fiona Williams's National Provider Identifier (NPI) is 1083352314, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Fiona Williams's specialty?
- Fiona Williams is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Fiona Williams located?
- Fiona Williams's practice location on file with NPPES is 24102 Northern Blvd, Douglaston, NY 11362-1055.
- What is Fiona Williams's phone number?
- The practice phone number listed in the NPPES registry for Fiona Williams is (718) 461-0163.
- Does Fiona Williams accept Medicare?
- Fiona Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Fiona Williams's NPI active?
- Yes — Fiona Williams's NPI (1083352314) is active in the NPPES registry as of the last update on 2026-04-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.