Richard Greendyk
NPI 1144612888 · Critical Care Medicine (Internal Medicine) Physician · New York, NY
Enrolled with Medicare as Practitioner - Critical Care (intensivists) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Richard Greendyk is a Critical Care Medicine (Internal Medicine) Physician provider in New York, NY (NPI 1144612888).
Provider details
- NPI number
- 1144612888
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 296362 (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
11 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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 231 | 37 |
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 116 | 16 |
| Umeclidinium Bromidebrand: Incruse Ellipta | 38 | — |
| Fluticasone/Vilanterolbrand: Breo Ellipta | 34 | — |
| Montelukast Sodium | 31 | — |
| Tiotropium Bromidebrand: Spiriva Respimat | 18 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-03-03
- Last updated
- 2025-03-06
- Certified
- 2025-03-06
Frequently asked questions
- What is Richard Greendyk's NPI number?
- Richard Greendyk's National Provider Identifier (NPI) is 1144612888, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Richard Greendyk's specialty?
- Richard Greendyk is listed in the NPPES registry with a primary specialty of Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Richard Greendyk located?
- Richard Greendyk's practice location on file with NPPES is 622 W 168th St Ph 8-101, New York, NY 10032-3720.
- What is Richard Greendyk's phone number?
- The practice phone number listed in the NPPES registry for Richard Greendyk is (212) 305-4141.
- Does Richard Greendyk accept Medicare?
- Richard Greendyk is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Richard Greendyk's NPI active?
- Yes — Richard Greendyk's NPI (1144612888) is active in the NPPES registry as of the last update on 2025-03-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.