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

Frank Duan, MD

Individual provider Internal Medicine Physician · NPI 1679214399

Frank Duan, MD is an Internal Medicine in New York, New York. Qualified in 2022, 4 years ago. Practices with Icahn School of Medicine at Mount Sinai, a 2,791-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
4
Licensed in
NY
In the registry since
2022
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

234 E 85th St
New York, NY 10028-3001
Phone: (212) 241-6585
Fax: (212) 824-2335
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 337296 (NY)

Record details

NPI number1679214399
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 5, 2022
Last updated in NPPESOctober 28, 2025
Certification dateOctober 28, 2025

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2022 (4 years in practice)
Group practice Icahn School Of Medicine At Mount Sinai — 2791 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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