Doctor profile · Federal record
Dr. Nicholas Ahn, M.D.
Surgery Physician (CMS: Colorectal Surgery (Proctology)) · Student in an Organized Health Care Education/Training Program · Student in an Organized Health Care Education/Training Program · Stony Brook, NY
- NPI 1912341447
- Accepts Medicare
- MIPS 91.4 / 100 · 2023
- 13 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
Health Science Tower Level 19, Room 030
Stony Brook, NY 117943412
(631) 444-1791 - Additional location
-
47 New Scotland Ave, Department of Surgery
Albany, NY 122083412
(518) 262-5374 - Mailing address
-
Health Science Tower Level 18, Room 051
Stony Brook, NY 117948191
Credentials & registration
- NPI registered
- April 2013 — 13 yrs on file
- Profile last updated
- September 7, 2021
- Year of graduation
- 2013 — 13 yrs since
- Specialty taxonomy
- 208600000X — NUCC code
- State license (1)
- New York #306605
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1912341447. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
255
Distinct HCPCS
6
Medicare allowed
$37,042
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99203 |
New patient office or other outpatient visit, 30-44 minutes | 91 | 91 | $123 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 45 | 30 | $98 | |
46600 |
Diagnostic exam of anus using an endoscope | 37 | 32 | $136 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 30 | 30 | $131 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 28 | 27 | $276 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 24 | 24 | $198 |
In context: peer comparison
Among 9 peers in this city , average services per provider: 53. This provider delivers 4.8× the peer median.Open Payments
Industry payments received
All-time total
$427
Transactions
7
Manufacturers
5
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Galvanize Therapeutics, Inc | 1 | $144.11 | |
| Virtual Incision Corporation | 1 | $140.00 | |
| Guard Medical Inc. | 2 | $82.07 | |
| Abbott Laboratories | 2 | $38.37 | |
| ABBVIE INC. | 1 | $22.05 |
By nature of payment
Frequently asked questions
What is Dr. Nicholas Ahn's medical specialty?
Dr. Nicholas Ahn practices Surgery Physician in Stony Brook, NY.
Where does Dr. Nicholas Ahn practice?
Dr. Nicholas Ahn practices at Health Science Tower Level 19, Room 030, Stony Brook, NY 117943412. Office phone: 6314441791.
What is Dr. Nicholas Ahn's NPI?
Dr. Nicholas Ahn's National Provider Identifier (NPI) is 1912341447, issued by NPPES.
Does Dr. Nicholas Ahn accept Medicare assignment?
Yes. Dr. Nicholas Ahn accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Nicholas Ahn commonly perform?
Top Medicare-reported procedures in 2023: New patient office or other outpatient visit (HCPCS 99203); Established patient office or other outpatient visit (HCPCS 99213); Diagnostic exam of anus using an endoscope (HCPCS 46600). Source: CMS Medicare Physician & Other Practitioners file.