Doctor profile · Federal record
Dr. Marc Landsman, M.D.
Student in an Organized Health Care Education/Training Program (CMS: Internal Medicine) · Washington, DC
- NPI 1407299621
- Accepts Medicare
- 13 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
3800 Reservoir RD Nw, Dept of Medicine
Washington, DC 200072113
(202) 444-8168
fax (877) 303-1460
Credentials & registration
- NPI registered
- April 2013 — 13 yrs on file
- Year of graduation
- 2013 — 13 yrs since
- Specialty taxonomy
- 390200000X — NUCC code
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1407299621. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
167
Distinct HCPCS
7
Medicare allowed
$18,646
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
G0500 |
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito | 56 | 55 | $5 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 37 | 37 | $233 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 18 | 18 | $233 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 16 | 14 | $94 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 14 | 14 | $91 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 14 | 14 | $116 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 12 | 11 | $94 |
In context: peer comparison
Among 12 peers in Washington Student in an Organized Health Care Education/Training Program, average services per provider: 123. This provider delivers 1.4× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
197
Patients
55
Total drug cost
$124,728
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 58 | 25 | $1,322 |
| Famotidine | Generic | 22 | 0 | $465 |
| Azathioprine | Generic | 21 | 0 | $3,076 |
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 19 | 19 | $299 |
| Humira Pen (Adalimumab) | Brand | 15 | 0 | $113,463 |
| Sulfasalazine | Generic | 15 | 0 | $627 |
| Dicyclomine Hcl | Generic | 13 | 0 | $461 |
| Pantoprazole Sodium | Generic | 12 | 0 | $243 |
| Mesalamine ER (Mesalamine) | Brand | 11 | 0 | $4,551 |
| Peg-3350 and Electrolytes (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 11 | 11 | $222 |
Frequently asked questions
What is Dr. Marc Landsman's medical specialty?
Dr. Marc Landsman practices Student in an Organized Health Care Education/Training Program in Washington, DC.
Where does Dr. Marc Landsman practice?
Dr. Marc Landsman practices at 3800 Reservoir RD Nw, Washington, DC 200072113. Office phone: 2024448168.
What is Dr. Marc Landsman's NPI?
Dr. Marc Landsman's National Provider Identifier (NPI) is 1407299621, issued by NPPES.
Does Dr. Marc Landsman accept Medicare assignment?
Yes. Dr. Marc Landsman accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Marc Landsman commonly perform?
Top Medicare-reported procedures in 2023: Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito (HCPCS G0500); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385). Source: CMS Medicare Physician & Other Practitioners file.