William Apfeldorf, MD
NPI 1144235698 · Psychiatry Physician · White Plains, NY
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Apfeldorf, MD is a Psychiatry Physician provider in White Plains, NY (NPI 1144235698).
Provider details
- NPI number
- 1144235698
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 174834 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
1,402 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 Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 723 | $55 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 535 | $154 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 71 | $87 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 53 | $127 |
| Psychiatric Diagnostic Evaluation With Medical Services90792 | 20 | $226 |
Typical Medicare-allowed amounts for these services range $55–$226 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Escitalopram Oxalate | 153 | 42 |
| Mirtazapine | 128 | 35 |
| Clonazepam | 127 | 21 |
| Quetiapine Fumarate | 84 | 23 |
| Sertraline Hcl | 83 | 18 |
| Trazodone Hcl | 74 | 23 |
| Duloxetine Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-30
- Last updated
- 2024-09-06
- Certified
- 2024-09-06
Frequently asked questions
- What is William Apfeldorf's NPI number?
- William Apfeldorf's National Provider Identifier (NPI) is 1144235698, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Apfeldorf's specialty?
- William Apfeldorf is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is William Apfeldorf located?
- William Apfeldorf's practice location on file with NPPES is 21 Bloomingdale Rd # 58, White Plains, NY 10605-1504.
- What is William Apfeldorf's phone number?
- The practice phone number listed in the NPPES registry for William Apfeldorf is (914) 997-5809.
- Does William Apfeldorf accept Medicare?
- William Apfeldorf is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Apfeldorf's NPI active?
- Yes — William Apfeldorf's NPI (1144235698) is active in the NPPES registry as of the last update on 2024-09-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.