William Hapworth, M.D.
NPI 1861536104 · Psychiatry Physician · New York, NY
William Hapworth, M.D. is a Psychiatry Physician provider in New York, NY (NPI 1861536104).
Provider details
- NPI number
- 1861536104
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 146087 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
611 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 308 | $96 |
| Psychotherapy With Evaluation and Management Visit, 45 Minutes90836 | 303 | $94 |
Typical Medicare-allowed amounts for these services range $94–$96 (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 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluoxetine Hcl | 57 | 15 |
| Bupropion Hclbrand: Bupropion Xl | 42 | 13 |
| Clonazepam | 28 | — |
| Trazodone Hcl | 28 | — |
| Sertraline Hcl | 27 | — |
| Mirtazapine | 23 | — |
| Gabapentin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$40 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-19
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Hapworth's NPI number?
- William Hapworth's National Provider Identifier (NPI) is 1861536104, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Hapworth's specialty?
- William Hapworth is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is William Hapworth located?
- William Hapworth's practice location on file with NPPES is 37 W 57th St, New York, NY 10019-3411.
- What is William Hapworth's phone number?
- The practice phone number listed in the NPPES registry for William Hapworth is (212) 956-2000.
- Is William Hapworth's NPI active?
- Yes — William Hapworth's NPI (1861536104) 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.