Doctor profile · Federal record
Dr. Alexander Greenstein, M.D.
Surgery Physician (CMS: General Surgery) · New York, NY
- NPI 1992964035
- Accepts Medicare
- 23 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
5 E 98Th St, 15Th Floor, Box 1259
New York, NY 100296501
(212) 241-8679
fax (212) 534-2654
Credentials & registration
- NPI registered
- June 2008 — 18 yrs on file
- Profile last updated
- October 8, 2014
- Year of graduation
- 2003 — 23 yrs since
- Specialty taxonomy
- 208600000X — NUCC code
- State license (1)
- New York #60 233708
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1992964035. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
171
Distinct HCPCS
6
Medicare allowed
$36,499
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 50 | 27 | $56 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 37 | 37 | $190 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 37 | 36 | $146 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 18 | 16 | $103 | |
99283 |
Emergency department visit with low level of medical decision making | 17 | 13 | $81 | |
49020 |
Drainage of abdominal abscess or infection | 12 | 11 | $1,504 |
In context: peer comparison
Among 97 peers in New York Surgery Physician, average services per provider: 66. This provider delivers 2.6× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Alexander Greenstein's medical specialty?
Dr. Alexander Greenstein practices Surgery Physician in New York, NY.
Where does Dr. Alexander Greenstein practice?
Dr. Alexander Greenstein practices at 5 E 98Th St, New York, NY 100296501. Office phone: 2122418679.
What is Dr. Alexander Greenstein's NPI?
Dr. Alexander Greenstein's National Provider Identifier (NPI) is 1992964035, issued by NPPES.
Does Dr. Alexander Greenstein accept Medicare assignment?
Yes. Dr. Alexander Greenstein accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Alexander Greenstein commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231); New patient office or other outpatient visit (HCPCS 99204); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222). Source: CMS Medicare Physician & Other Practitioners file.