Rebecca Williams, MD, MHPE, FAAFP
NPI 1841375979 · Family Medicine Physician · Sleepy Hollow, NY
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rebecca Williams, MD, MHPE, FAAFP is a Family Medicine Physician provider in Sleepy Hollow, NY (NPI 1841375979).
Provider details
- NPI number
- 1841375979
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MHPE, FAAFP
- Sex
- Female
- Sole proprietor
- No
- License
- 233184 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 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
78 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 28 | $171 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 25 | $80 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 25 | $19 |
Typical Medicare-allowed amounts for these services range $19–$171 (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 · 34 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 49 | 13 |
| Atorvastatin Calcium | 42 | 19 |
| Lisinopril | 31 | 11 |
| Amlodipine Besylate | 28 | 12 |
| Omeprazole | 28 | — |
| Metoprolol Succinate | 25 | — |
| Semaglutide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-26
- Last updated
- 2012-11-14
Frequently asked questions
- What is Rebecca Williams's NPI number?
- Rebecca Williams's National Provider Identifier (NPI) is 1841375979, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rebecca Williams's specialty?
- Rebecca Williams is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Rebecca Williams located?
- Rebecca Williams's practice location on file with NPPES is 80 Beekman Ave, Sleepy Hollow, NY 10591-2503.
- What is Rebecca Williams's phone number?
- The practice phone number listed in the NPPES registry for Rebecca Williams is (914) 631-4141.
- Does Rebecca Williams accept Medicare?
- Rebecca Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rebecca Williams's NPI active?
- Yes — Rebecca Williams's NPI (1841375979) is active in the NPPES registry as of the last update on 2012-11-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.