Doctor profile · Federal record
Dr. John Greely, M.D.
Hospitalist Physician (CMS: Internal Medicine) · Internal Medicine Physician · New York, NY
- NPI 1922091842
- Accepts Medicare
- 34 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 4 locations .
- Primary practice
-
1090 Amsterdam Ave, 4Th Floor
New York, NY 100251737
(212) 961-5500
fax (212) 531-4590 - Additional location
-
1000 10Th Ave
New York, NY 100191147
(212) 523-4000 - Additional location
-
1111 Amsterdam Ave
New York, NY 100251716
(212) 523-4000 - Additional location
-
2771 Frederick Douglass Blvd
New York, NY 100393027
(212) 690-0303 - Mailing address
-
150 E 42Nd St, Fl 10
New York, NY 100175626
Show 1 more location
Credentials & registration
- NPI registered
- August 2005 — 21 yrs on file
- Profile last updated
- May 25, 2021
- Year of graduation
- 1992 — 34 yrs since
- Specialty taxonomy
- 208M00000X — NUCC code
- State license (1)
- New York #200383
- Medicaid
- NY #01592745
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1922091842. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
615
Distinct HCPCS
6
Medicare allowed
$68,720
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 336 | 115 | $90 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 143 | 60 | $136 | |
99239 |
Hospital discharge day management, more than 30 minutes | 41 | 40 | $131 | |
99238 |
Hospital discharge day management, 30 minutes or less | 37 | 34 | $92 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 33 | 32 | $198 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 25 | 25 | $149 |
In context: peer comparison
Among 190 peers in New York Hospitalist Physician, average services per provider: 97. This provider delivers 6.3× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. John Greely's medical specialty?
Dr. John Greely practices Hospitalist Physician in New York, NY.
Where does Dr. John Greely practice?
Dr. John Greely practices at 1090 Amsterdam Ave, New York, NY 100251737. Office phone: 2129615500.
What is Dr. John Greely's NPI?
Dr. John Greely's National Provider Identifier (NPI) is 1922091842, issued by NPPES.
Does Dr. John Greely accept Medicare assignment?
Yes. Dr. John Greely accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Greely commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.