Doctor profile · Federal record
Dr. Mark Gelfand, MD
Plastic Surgery Physician (CMS: Plastic and Reconstructive Surgery) · East Setauket, NY
- NPI 1659546992
- Accepts Medicare
- MIPS 85.3 / 100 · 2023
- 26 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
24 Research Way
East Setauket, NY 117333487
(631) 444-4666 - Mailing address
-
Po Box 1559
Stony Brook, NY 117900989
Credentials & registration
- NPI registered
- April 2008 — 18 yrs on file
- Year of graduation
- 2000 — 26 yrs since
- Specialty taxonomy
- 208200000X — NUCC code
- State license (1)
- New York #234242
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1659546992. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
266
Distinct HCPCS
7
Medicare allowed
$28,761
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99203 |
New patient office or other outpatient visit, 30-44 minutes | 78 | 78 | $116 | |
J3301 |
Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 53 | 40 | $1 | |
20550 |
Injection into tendon or ligament | 36 | 25 | $52 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 32 | 32 | $163 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 29 | 27 | $133 | |
64721 |
Release and/or relocation of hand nerve | 20 | 17 | $390 | |
20600 |
Aspiration and/or injection of fluid from small joint | 18 | 16 | $49 |
In context: peer comparison
Among 5 peers in this city , average services per provider: 36. This provider delivers 7.4× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
22
Patients
19
Total drug cost
$72
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Oxycodone Hcl | Generic | 22 | 19 | $72 |
Hospital affiliations
Frequently asked questions
What is Dr. Mark Gelfand's medical specialty?
Dr. Mark Gelfand practices Plastic Surgery Physician in East Setauket, NY.
Where does Dr. Mark Gelfand practice?
Dr. Mark Gelfand practices at 24 Research Way, East Setauket, NY 117333487. Office phone: 6314444666.
What is Dr. Mark Gelfand's NPI?
Dr. Mark Gelfand's National Provider Identifier (NPI) is 1659546992, issued by NPPES.
Does Dr. Mark Gelfand accept Medicare assignment?
Yes. Dr. Mark Gelfand accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Gelfand commonly perform?
Top Medicare-reported procedures in 2023: New patient office or other outpatient visit (HCPCS 99203); Injection, triamcinolone acetonide, not otherwise specified, 10 mg (HCPCS J3301); Injection into tendon or ligament (HCPCS 20550). Source: CMS Medicare Physician & Other Practitioners file.