Marc Landsman, M.D.
NPI 1407299621 · Student in an Organized Health Care Education/Training Program · Washington, DC
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marc Landsman, M.D. is a Student in an Organized Health Care Education/Training Program provider in Washington, DC (NPI 1407299621).
Provider details
- NPI number
- 1407299621
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
121 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| 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 MonitoG0500 | 30 | $5 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 19 | $229 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 17 | $218 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 17 | $124 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 14 | $92 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 55 | 18 |
| Famotidine | 32 | — |
| Dicyclomine Hcl | 24 | — |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 23 | 21 |
| Mesalamine | 23 | — |
| Adalimumabbrand: Humira Pen | 18 | — |
| Lipase/Protease/Amylasebrand: Creon | 16 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-04-08
- Last updated
- 2013-04-08
Frequently asked questions
- What is Marc Landsman's NPI number?
- Marc Landsman's National Provider Identifier (NPI) is 1407299621, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Landsman's specialty?
- Marc Landsman is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Marc Landsman located?
- Marc Landsman's practice location on file with NPPES is 3800 Reservoir Rd Nw, Washington, DC 20007-2113.
- What is Marc Landsman's phone number?
- The practice phone number listed in the NPPES registry for Marc Landsman is (202) 444-8168.
- Does Marc Landsman accept Medicare?
- Marc Landsman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marc Landsman's NPI active?
- Yes — Marc Landsman's NPI (1407299621) is active in the NPPES registry as of the last update on 2013-04-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.