Doctor profile · Federal record
Dr. Jarred Marshak, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Wantagh, NY
- NPI 1538417027
- Accepts Medicare
- MIPS 7.7 / 100 · 2023
- 15 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1488 Wantagh Ave
Wantagh, NY 11793
(516) 785-6800
Credentials & registration
- NPI registered
- August 2012 — 14 yrs on file
- Profile last updated
- June 1, 2018
- Year of graduation
- 2011 — 15 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- New York #280832
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1538417027. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
888
Distinct HCPCS
10
Medicare allowed
$103,800
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 404 | 196 | $101 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 91 | 77 | $142 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 85 | 85 | $188 | |
36415 |
Insertion of needle into vein for collection of blood sample | 78 | 64 | $8 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 72 | 66 | $143 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 51 | 51 | $165 | |
99211 |
Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional | 40 | 38 | $26 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 24 | 24 | $286 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 16 | 16 | $209 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 16 | 16 | $128 |
In context: peer comparison
Among 2 peers in Wantagh Gastroenterology Physician, average services per provider: 74. This provider delivers 12× the peer median.Open Payments
Industry payments received
All-time total
$381
Transactions
12
Manufacturers
8
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Phathom Pharmaceuticals, INC. | 1 | $125.00 | |
| Genzyme Corporation | 3 | $94.50 | |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 2 | $46.71 | |
| Abbvie INC. | 2 | $36.20 | |
| Ardelyx, INC. | 1 | $23.29 | |
| Pfizer INC. | 1 | $18.65 | |
| Takeda Pharmaceuticals U.S.A., INC. | 1 | $18.48 | |
| Celgene Corporation | 1 | $18.46 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
415
Patients
181
Total drug cost
$22,984
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 215 | 80 | $2,735 |
| Famotidine | Generic | 51 | 18 | $947 |
| Omeprazole | Generic | 39 | 20 | $571 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 35 | 35 | $2,506 |
| Sucralfate | Generic | 27 | 11 | $4,338 |
| Sutab (Sod Sulf/Pot Chloride/Mag Sulf) | Brand | 17 | 17 | $2,794 |
| Linzess (Linaclotide) | Brand | 16 | 0 | $8,954 |
| Dicyclomine Hcl | Generic | 15 | 0 | $138 |
Frequently asked questions
What is Dr. Jarred Marshak's medical specialty?
Dr. Jarred Marshak practices Gastroenterology Physician in Wantagh, NY.
Where does Dr. Jarred Marshak practice?
Dr. Jarred Marshak practices at 1488 Wantagh Ave, Wantagh, NY 11793. Office phone: 5167856800.
What is Dr. Jarred Marshak's NPI?
Dr. Jarred Marshak's National Provider Identifier (NPI) is 1538417027, issued by NPPES.
Does Dr. Jarred Marshak accept Medicare assignment?
Yes. Dr. Jarred Marshak accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jarred Marshak commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.