Doctor profile · Federal record
Dr. Mark Liss, MD
Specialist (CMS: Gastroenterology) · New Rochelle, NY
- NPI 1902906142
- Accepts Medicare
- MIPS 75.0 / 100 · 2023
- 49 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
140 Lockwood Ave, Suite 318
New Rochelle, NY 108014915
(914) 633-0888
fax (914) 633-0951
Credentials & registration
- NPI registered
- September 2006 — 20 yrs on file
- Profile last updated
- December 13, 2010
- Year of graduation
- 1977 — 49 yrs since
- Specialty taxonomy
- 174400000X — NUCC code
- State license (1)
- New York #137170
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1902906142. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
699
Distinct HCPCS
10
Medicare allowed
$107,791
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99204 |
New patient office or other outpatient visit, 45-59 minutes | 128 | 128 | $195 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 120 | 120 | $145 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 94 | 92 | $101 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 93 | 86 | $148 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 62 | 62 | $231 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 49 | 49 | $217 | |
45381 |
Injection beneath lining of large bowel using a flexible endoscope | 33 | 32 | $24 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 29 | 15 | $91 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 24 | 24 | $133 | |
45382 |
Control of bleeding of upper large bowel using a flexible endoscope | 20 | 20 | $303 |
In context: peer comparison
Among 1 peers in New Rochelle Specialist, average services per provider: 53. This provider delivers 13× the peer median.Open Payments
Industry payments received
All-time total
$111
Transactions
5
Manufacturers
5
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Ironwood Pharmaceuticals, INC | 1 | $24.89 | |
| Takeda Pharmaceuticals U.S.A., INC. | 1 | $23.68 | |
| Madrigal Pharmaceuticals | 1 | $22.78 | |
| Merck Sharp & Dohme LLC | 1 | $21.77 | |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 1 | $18.04 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
515
Patients
242
Total drug cost
$90,124
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 100 | 42 | $1,034 |
| Famotidine | Generic | 92 | 30 | $968 |
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 61 | 60 | $1,025 |
| Pantoprazole Sodium | Generic | 57 | 16 | $975 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 50 | 50 | $3,932 |
| Linzess (Linaclotide) | Brand | 47 | 12 | $41,423 |
| Mesalamine | Generic | 33 | 0 | $34,482 |
| Cholestyramine (Cholestyramine (With Sugar)) | Brand | 18 | 0 | $1,131 |
| Gavilyte-C (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 18 | 18 | $303 |
| Clenpiq (Sod Picosulf/Mag Ox/Citric Ac) | Brand | 14 | 14 | $2,473 |
Hospital affiliations
Frequently asked questions
What is Dr. Mark Liss's medical specialty?
Dr. Mark Liss practices Specialist in New Rochelle, NY.
Where does Dr. Mark Liss practice?
Dr. Mark Liss practices at 140 Lockwood Ave, New Rochelle, NY 108014915. Office phone: 9146330888.
What is Dr. Mark Liss's NPI?
Dr. Mark Liss's National Provider Identifier (NPI) is 1902906142, issued by NPPES.
Does Dr. Mark Liss accept Medicare assignment?
Yes. Dr. Mark Liss accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Liss commonly perform?
Top Medicare-reported procedures in 2023: New patient office or other outpatient visit (HCPCS 99204); Biopsy of large bowel using a flexible endoscope (HCPCS 45380); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239). Source: CMS Medicare Physician & Other Practitioners file.