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

Dr. Rafael A. Guillen, MD

Individual provider Internal Medicine Physician · NPI 1861430076

Dr. Rafael A. Guillen, MD is an Internal Medicine in Bronx, New York. Qualified in 1987, 39 years ago. Practices with North Shore Medical Group of the Mount Sinai School of Medicine, a 323-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
39
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

800 Grand Concourse Frnt OFFICE5
Bronx, NY 10451-3003
Phone: (718) 401-2300
Fax: (718) 401-2322
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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 233234 (NY)

Record details

NPI number1861430076
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 2, 2006
Last updated in NPPESMay 28, 2020
Certification dateMay 28, 2020

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1987 (39 years in practice)
Group practice North Shore Medical Group Of The Mount Sinai School Of Medicine — 323 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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