Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Louis Marc Weiner, MD

Individual provider Specialist · NPI 1205859931

Louis Marc Weiner, MD is an Internal Medicine in Washington, District of Columbia. Graduated from Icahn School of Medicine at Mount Sinai in 1977, 49 years ago. Practices with Medstar Medical Group II LLC, a 3,717-clinician group and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
49
Trained at
Icahn School of Medicine at Mount Sinai
Licensed in
PA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3970 Reservoir Rd NW Lccc Georgetown University Medical Ctr Rm E501
Washington, DC 20007-2126
Phone: (202) 687-2110
Fax: (202) 687-6402
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Specialist (primary) Taxonomy 174400000X · Licence MD031312E (PA)

Record details

NPI number1205859931
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 25, 2006
Last updated in NPPESAugust 4, 2010

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolICAHN SCHOOL OF MEDICINE AT MOUNT SINAI
Graduated 1977 (49 years in practice)
Group practice Medstar Medical Group Ii Llc — 3717 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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