Doctor profile · Federal record
Dr. Mark Chu, DO
Gastroenterology Physician (CMS: Gastroenterology) · New York, NY
- NPI 1588755565
- 33 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
13-17 Elizabeth Street, Ste 608
New York, NY 10013
(212) 219-8031
fax (212) 219-3903
Credentials & registration
- NPI registered
- September 2006 — 20 yrs on file
- Profile last updated
- July 8, 2007
- Year of graduation
- 1993 — 33 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- New York #196705
- Medicaid
- NY #01987824
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1588755565. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
214
Distinct HCPCS
8
Medicare allowed
$56,744
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 43 | 40 | $413 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 40 | 37 | $145 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 39 | 36 | $103 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 38 | 38 | $405 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 17 | 17 | $190 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 13 | 13 | $203 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 12 | 12 | $531 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 12 | 12 | $129 |
In context: peer comparison
Among 165 peers in New York Gastroenterology Physician, average services per provider: 69. This provider delivers 3.1× the peer median.Open Payments
Industry payments received
All-time total
$1,672
Transactions
62
Manufacturers
11
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 11 | $319.64 | |
| Gilead Sciences, INC. | 13 | $317.53 | |
| Pfizer INC. | 14 | $213.73 | |
| Aimmune Therapeutics, INC. | 7 | $169.00 | |
| Phathom Pharmaceuticals, INC. | 2 | $167.32 | |
| Madrigal Pharmaceuticals | 1 | $150.00 | |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 10 | $147.03 | |
| AngioDynamics, INC. | 1 | $125.00 | |
| Ardelyx, INC. | 1 | $28.77 | |
| Lilly USA, LLC | 1 | $21.42 | |
| Micro-Tech Endoscopy USA, INC. | 1 | $12.92 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
799
Patients
521
Total drug cost
$127,844
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 309 | 220 | $2,750 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 121 | 118 | $8,860 |
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 72 | 70 | $1,147 |
| Gavilyte-C (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 45 | 45 | $809 |
| Linzess (Linaclotide) | Brand | 39 | 0 | $24,017 |
| Pantoprazole Sodium | Generic | 38 | 11 | $328 |
| Vemlidy (Tenofovir Alafenamide) | Brand | 35 | 0 | $58,332 |
| Amoxicillin | Generic | 21 | 20 | $154 |
| Suprep (Sodium, Potassium,Mag Sulfates) | Brand | 20 | 20 | $2,416 |
| Famotidine | Generic | 19 | 0 | $259 |
Frequently asked questions
What is Dr. Mark Chu's medical specialty?
Dr. Mark Chu practices Gastroenterology Physician in New York, NY.
Where does Dr. Mark Chu practice?
Dr. Mark Chu practices at 13-17 Elizabeth Street, New York, NY 10013. Office phone: 2122198031.
What is Dr. Mark Chu's NPI?
Dr. Mark Chu's National Provider Identifier (NPI) is 1588755565, issued by NPPES.
Does Dr. Mark Chu accept Medicare assignment?
Dr. Mark Chu does not accept Medicare assignment for all services. Patients may be billed amounts beyond Medicare-allowed charges.
What procedures does Dr. Mark Chu commonly perform?
Top Medicare-reported procedures in 2023: Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239); Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.