Doctor profile · Federal record
Dr. Mark Gelfand, MD
Internal Medicine Physician (CMS: Internal Medicine) · Brooklyn, NY
- NPI 1801849658
- Accepts Medicare
- MIPS 27.8 / 100 · 2023
- 40 yrs in practice
- Male
- No sanctions
Practice & contact
- Primary practice
-
415 Oceanview Ave
Brooklyn, NY 11235
(718) 934-4842
fax (718) 616-0165
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- July 8, 2007
- Year of graduation
- 1986 — 40 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- New York #211150
- Medicaid
- NY #01892906
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1801849658. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
25,786
Distinct HCPCS
10
Medicare allowed
$654,759
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 1,885 | 498 | $105 | |
36415 |
Insertion of needle into vein for collection of blood sample | 1,422 | 517 | $8 | |
85025 |
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 1,129 | 489 | $8 | |
80053 |
Blood test, comprehensive group of blood chemicals | 1,058 | 482 | $10 | |
82728 |
Ferritin (blood protein) level | 1,054 | 481 | $13 | |
82150 |
Amylase (enzyme) level | 1,047 | 479 | $6 | |
83540 |
Iron level | 1,044 | 478 | $6 | |
83550 |
Iron binding capacity | 1,044 | 479 | $9 | |
83735 |
Magnesium level | 1,043 | 478 | $7 | |
82550 |
Creatine kinase (cardiac enzyme) level, total | 1,041 | 477 | $6 |
In context: peer comparison
Among 393 peers in Brooklyn Internal Medicine Physician, average services per provider: 326. This provider delivers 79× the peer median.Open Payments
Industry payments received
All-time total
$620
Transactions
30
Manufacturers
8
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 12 | $220.18 | |
| GlaxoSmithKline, LLC. | 4 | $91.11 | |
| Bayer Healthcare Pharmaceuticals INC. | 3 | $77.11 | |
| AstraZeneca Pharmaceuticals Lp | 3 | $66.91 | |
| Lilly USA, LLC | 2 | $52.26 | |
| Azurity Pharmaceuticals, INC. | 3 | $49.74 | |
| Merck Sharp & Dohme LLC | 2 | $42.25 | |
| E.R. Squibb & Sons, L.L.C. | 1 | $20.00 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
9,016
Patients
1,278
Total drug cost
$550,240
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Amlodipine Besylate | Generic | 1,209 | 179 | $11,337 |
| Atorvastatin Calcium | Generic | 1,115 | 170 | $12,098 |
| Rosuvastatin Calcium | Generic | 910 | 124 | $15,482 |
| Metoprolol Succinate | Generic | 849 | 119 | $12,286 |
| Losartan Potassium | Generic | 652 | 100 | $7,655 |
| Levothyroxine Sodium | Generic | 625 | 81 | $7,020 |
| Omeprazole | Generic | 567 | 91 | $6,176 |
| Eliquis (Apixaban) | Brand | 449 | 55 | $295,693 |
| Metoprolol Tartrate | Generic | 435 | 61 | $3,795 |
| Synthroid (Levothyroxine Sodium) | Brand | 429 | 48 | $22,542 |
Frequently asked questions
What is Dr. Mark Gelfand's medical specialty?
Dr. Mark Gelfand practices Internal Medicine Physician in Brooklyn, NY.
Where does Dr. Mark Gelfand practice?
Dr. Mark Gelfand practices at 415 Oceanview Ave, Brooklyn, NY 11235. Office phone: 7189344842.
What is Dr. Mark Gelfand's NPI?
Dr. Mark Gelfand's National Provider Identifier (NPI) is 1801849658, 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: Established patient office or other outpatient visit (HCPCS 99213); Insertion of needle into vein for collection of blood sample (HCPCS 36415); Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (HCPCS 85025). Source: CMS Medicare Physician & Other Practitioners file.