Doctor profile · Federal record
Dr. Irwin Grosman, MD
Gastroenterology Physician (CMS: Gastroenterology) · Hepatology Physician · Brooklyn, NY
- NPI 1821059668
- Accepts Medicare
- MIPS 83.0 / 100 · 2023
- 42 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
50 Court St
Brooklyn, NY 112014879
(718) 522-3131
fax (718) 243-2137 - Mailing address
-
506 6Th St
Brooklyn, NY 112153609
Credentials & registration
- NPI registered
- March 2006 — 20 yrs on file
- Profile last updated
- July 30, 2024
- Year of graduation
- 1984 — 42 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- New York #165503
- Medicaid
- NY #01149513
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1821059668. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
616
Distinct HCPCS
10
Medicare allowed
$83,724
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 124 | 87 | $106 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 79 | 58 | $59 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 63 | 62 | $299 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 61 | 61 | $198 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 59 | 59 | $124 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 58 | 58 | $107 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 56 | 56 | $153 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 50 | 50 | $135 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 39 | 38 | $151 | |
36415 |
Insertion of needle into vein for collection of blood sample | 27 | 22 | $8 |
In context: peer comparison
Among 44 peers in Brooklyn Gastroenterology Physician, average services per provider: 119. This provider delivers 5.2× the peer median.Open Payments
Industry payments received
All-time total
$10,871
Transactions
21
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Phathom Pharmaceuticals, INC. | 14 | $10,313.69 | |
| Janssen Biotech, INC. | 6 | $496.80 | |
| Abbvie INC. | 1 | $60.23 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
645
Patients
306
Total drug cost
$34,674
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 304 | 91 | $3,342 |
| Famotidine | Generic | 84 | 30 | $6,058 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 74 | 74 | $5,015 |
| Peg 3350-Electrolyte (Sodium Chloride/Nahco3/Kcl/Peg) | Brand | 63 | 62 | $1,304 |
| Omeprazole | Generic | 61 | 18 | $726 |
| Linzess (Linaclotide) | Brand | 28 | 0 | $15,767 |
| Gavilyte-C (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 19 | 19 | $333 |
| Clenpiq (Sod Picosulf/Mag Ox/Citric Ac) | Brand | 12 | 12 | $2,129 |
Hospital affiliations
Frequently asked questions
What is Dr. Irwin Grosman's medical specialty?
Dr. Irwin Grosman practices Gastroenterology Physician in Brooklyn, NY.
Where does Dr. Irwin Grosman practice?
Dr. Irwin Grosman practices at 50 Court St, Brooklyn, NY 112014879. Office phone: 7185223131.
What is Dr. Irwin Grosman's NPI?
Dr. Irwin Grosman's National Provider Identifier (NPI) is 1821059668, issued by NPPES.
Does Dr. Irwin Grosman accept Medicare assignment?
Yes. Dr. Irwin Grosman accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Irwin Grosman commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385). Source: CMS Medicare Physician & Other Practitioners file.