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

Individual provider Geriatric Medicine (Internal Medicine) Physician · NPI 1902993082

Mark Lachs, MD is an Internal Medicine in New York, New York. Graduated from New York University School of Medicine in 1985, 41 years ago. Practices with Weill Medical College of Cornell, a 2,031-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
41
Trained at
New York University School of Medicine
Licensed in
NY
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

1484 1st Ave # 1486
New York, NY 10021-2304
Phone: (212) 746-1382
Fax: (212) 746-0450
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Geriatric Medicine (Internal Medicine) Physician (primary) Taxonomy 207RG0300X · Licence 196398 (NY)

Record details

NPI number1902993082
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 9, 2006
Last updated in NPPESSeptember 19, 2011

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesGERIATRIC MEDICINE
Medical schoolNEW YORK UNIVERSITY SCHOOL OF MEDICINE
Graduated 1985 (41 years in practice)
Group practice Weill Medical College Of Cornell — 2031 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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