William Rosenfeld, M.D.
NPI 1285847442 · Psychiatry Physician · Katonah, NY
William Rosenfeld, M.D. is a Psychiatry Physician provider in Katonah, NY (NPI 1285847442).
Provider details
- NPI number
- 1285847442
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 140122 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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 · 11 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Clonazepam | 44 |
| Clozapine | 27 |
| Zolpidem Tartrate | 27 |
| Trazodone Hcl | 17 |
| Aripiprazole | 16 |
| Bupropion Hclbrand: Bupropion Xl | 14 |
| Zaleplon | 13 |
| Lamotrigine | 12 |
| Divalproex Sodium | 11 |
| Paroxetine Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-07
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Rosenfeld's NPI number?
- William Rosenfeld's National Provider Identifier (NPI) is 1285847442, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Rosenfeld's specialty?
- William Rosenfeld is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is William Rosenfeld located?
- William Rosenfeld's practice location on file with NPPES is 223 Katonah Ave, Katonah, NY 10536-2146.
- What is William Rosenfeld's phone number?
- The practice phone number listed in the NPPES registry for William Rosenfeld is (914) 232-1440.
- Is William Rosenfeld's NPI active?
- Yes — William Rosenfeld's NPI (1285847442) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.