Doctor profile · Federal record
Dr. Mark Fenig, M.D., MPH
Emergency Medicine Physician (CMS: Emergency Medicine) · Emergency Medicine Physician · Greenport, NY
- NPI 1114101169
- Accepts Medicare
- 19 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
201 Manor Pl
Greenport, NY 119441222
(631) 477-1000
Credentials & registration
- NPI registered
- December 2007 — 19 yrs on file
- Profile last updated
- November 28, 2022
- Year of graduation
- 2007 — 19 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State licenses (2)
- New York #267120 · Georgia #002633
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1114101169. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
295
Distinct HCPCS
5
Medicare allowed
$48,629
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99285 |
Emergency department visit with high level of medical decision making | 121 | 116 | $205 | |
99284 |
Emergency department visit with moderate level of medical decision making | 110 | 106 | $140 | |
99283 |
Emergency department visit with low level of medical decision making | 28 | 27 | $84 | |
99291 |
Critical care, first 30-74 minutes | 24 | 22 | $247 | |
93042 |
Electrocardiogram (ecg) 1 to 3 leads with review by physician only | 12 | 12 | $8 |
In context: peer comparison
Among 3 peers in Greenport Emergency Medicine Physician, average services per provider: 66. This provider delivers 4.5× the peer median.Frequently asked questions
What is Dr. Mark Fenig's medical specialty?
Dr. Mark Fenig practices Emergency Medicine Physician in Greenport, NY.
Where does Dr. Mark Fenig practice?
Dr. Mark Fenig practices at 201 Manor Pl, Greenport, NY 119441222. Office phone: 6314771000.
What is Dr. Mark Fenig's NPI?
Dr. Mark Fenig's National Provider Identifier (NPI) is 1114101169, issued by NPPES.
Does Dr. Mark Fenig accept Medicare assignment?
Yes. Dr. Mark Fenig accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Fenig commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Emergency department visit with moderate level of medical decision making (HCPCS 99284); Emergency department visit with low level of medical decision making (HCPCS 99283). Source: CMS Medicare Physician & Other Practitioners file.