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- 140 Lockwood Ave, Suite 318, New Rochelle, NY 10801
About Dr. Liss
Mark R. Liss, MD is a specialist based in New Rochelle, NY. Mark is a 1977 graduate of Icahn School of Medicine at Mount Sinai. According to Medicare claims data, Mark cared for 465 Medicare patients across 476 services. The services billed most often include new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more, biopsy of large bowel using a flexible endoscope, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. The provider's National Provider Identifier (NPI) is 1902906142.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (914) 633-0888
- Email not available
Practice Locations
140 LOCKWOOD AVE SUITE 318
New Rochelle, NY 10801
Procedures Most Often Billed to Medicare
476 services · 465 patients · 9 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
88 | More often than most peers in Specialist |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
72 | As often as other peers in Specialist |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
47 | As often as other peers in Specialist |
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
29 | More often than most peers in Specialist |
| Injection beneath lining of large bowel using a flexible endoscope | Procedure | 45381 |
20 | More often than most peers in Specialist |
| Control of bleeding of upper large bowel using a flexible endoscope | Procedure | 45382 |
14 | Too few peers to compare |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
96 | More often than most peers in Specialist |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
73 | Less often than most peers in Specialist |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
37 | As often as other peers in Specialist |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other specialists at this location 2
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other specialists in New Rochelle 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Icahn School of Medicine at Mount Sinai 8
Other providers in the same specialty who trained at the same institution.
Class of 1977 at Icahn School of Medicine at Mount Sinai 8
Providers who graduated from the same medical school in the same year.
Also performs Biopsy of large bowel using a flexible endoscope 8
Providers in NY who bill this service to Medicare most often.
Common questions
What does Dr. Liss specialize in?
Dr. Liss is a specialist in New Rochelle, NY. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Dr. Liss located?
Dr. Liss is listed at 140 Lockwood Ave Suite 318, New Rochelle, NY 10801. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Liss's phone number?
The number on file is (914) 633-0888. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Liss's NPI number?
Dr. Liss's National Provider Identifier is 1902906142. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Liss go to medical school?
Dr. Liss attended Icahn School of Medicine at Mount Sinai, graduating in 1977. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Liss been practicing?
Dr. Liss has 49 years experience. Calculated from a graduation year of 1977, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Liss do most often?
According to Medicare billing data, Dr. Liss performs procedures including biopsy of large bowel using a flexible endoscope, biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope and removal of polyps or growths of large bowel using an endoscope with mechanical snare, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Liss confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Liss. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.