Richard Adrian Greendyk
Critical Care Medicine (Internal Medicine) Physician · New York, NY
Richard Adrian Greendyk is a critical care medicine (internal medicine) physician with a practice address in New York, New York, and NPI 1144612888, issued on Mar 3, 2015. Check the license (New York 296362, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Richard Adrian Greendyk
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- 296362 NY
Self-reported in NPPES; status is on the state search - Practice location
- 622 W 168TH St PH 8-101, New York, NY 10032
- Phone
- (212) 305-4141
- Enumerated
- Mar 3, 2015
- Record last updated
- Mar 6, 2025
- Medicare enrollment
- Enrolled (PECOS I20200916001713); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 2017
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 486 in New York → Look up another NPI →
Also registered at 622 W 168TH St PH 8-101
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Claire Keating, MDPulmonary Disease Physician1902069297
Verify Richard Adrian Greendyk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 296362Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15% fewer Medicare Part D claims than the average critical care medicine (internal medicine) physician in 2024
595 Medicare Part D claims for 53 beneficiaries, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D. Brand-name drugs were 69% of claims.
Most prescribed
- Albuterol Sulfate Hfa231 claims
- Trelegy Ellipta116 claims
- Incruse Ellipta38 claims
- Breo Ellipta34 claims
- Montelukast Sodium31 claims
- Spiriva Respimat18 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Trustees OF Columbia University IN The City OF New YorkNew York, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Richard Adrian Greendyk among 486 critical care medicine (internal medicine) physician records in New York
Richard Adrian Greendyk is one of 486 critical care medicine (internal medicine) physician records with a practice address in New York. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 72% of them.
- NPI issued2015 · 72% of these records are older, 24% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 80% of these records are
- Graduated2017 · median 2006 among the 389 with a school on file
- Record last updated2025 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in New York
There are 486 critical care medicine (internal medicine) physician records in New York.
All 486 in New York → Every provider in New York → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Darryl Abrams, MDNew York, NY 100321881853406
- Cara Agerstrand, MDNew York, NY 100321386803823
- Matthew Baldwin, M.D.New York, NY 100321497891394
- Jeremy Beitler, M.D.New York, NY 100321043486608
- William Bulman, M.D.New York, NY 100321689860249
- Kristin Burkart, M.D.New York, NY 100321184683344
- Jennifer Cunningham, M.D.New York, NY 100321366515553
- Max O'Donnell, MDNew York, NY 100321093773194
Common questions
What is Richard Adrian Greendyk's NPI number?
Richard Adrian Greendyk's National Provider Identifier (NPI) is 1144612888, issued on Mar 3, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Richard Adrian Greendyk located?
The NPPES record lists a practice address at 622 W 168TH St PH 8-101, New York, NY, 10032. Phone: (212) 305-4141. Providers update this record themselves, so call before visiting.
How can I verify Richard Adrian Greendyk's license?
NPPES lists New York license number 296362, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Richard Adrian Greendyk prescribe under Medicare Part D?
In 2024, Richard Adrian Greendyk had 595 Medicare Part D claims for 53 beneficiaries; the average among critical care medicine (internal medicine) physician prescribers was 696. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.