Laurence Greenhill, M.D.
NPI 1992823546 · Child & Adolescent Psychiatry Physician · Mamaroneck, NY
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Laurence Greenhill, M.D. is a Child & Adolescent Psychiatry Physician provider in Mamaroneck, NY (NPI 1992823546).
Provider details
- NPI number
- 1992823546
- Entity type
- Individual
- Primary specialty
- Child & Adolescent Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 102893 (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 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lorazepam | 65 | — |
| Fluoxetine Hcl | 39 | — |
| Alprazolam | 32 | — |
| Trazodone Hcl | 31 | 11 |
| Escitalopram Oxalate | 31 | — |
| Clonazepam | 27 | — |
| Mirtazapine | 26 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-26
- Last updated
- 2022-02-11
Frequently asked questions
- What is Laurence Greenhill's NPI number?
- Laurence Greenhill's National Provider Identifier (NPI) is 1992823546, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Laurence Greenhill's specialty?
- Laurence Greenhill is listed in the NPPES registry with a primary specialty of Child & Adolescent Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Laurence Greenhill located?
- Laurence Greenhill's practice location on file with NPPES is 9 Country Rd, Mamaroneck, NY 10543-1105.
- What is Laurence Greenhill's phone number?
- The practice phone number listed in the NPPES registry for Laurence Greenhill is (914) 381-2436.
- Does Laurence Greenhill accept Medicare?
- Laurence Greenhill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Laurence Greenhill's NPI active?
- Yes — Laurence Greenhill's NPI (1992823546) is active in the NPPES registry as of the last update on 2022-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.