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

Johan Guillaume

Individual provider Internal Medicine Physician · NPI 1457738593

Johan Guillaume is a Hospitalist in New York, New York. Qualified in 2015, 11 years ago. Practices with New York University, a 5,884-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
11
Licensed in
NY
In the registry since
2015
Specialties on file
4
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Practice location Address checks out

1305 York Ave
New York, NY 10021-5663
Phone: (646) 962-8747
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 315641 (NY)
Internal Medicine Physician Taxonomy 207R00000X · Licence 315641 (NY)
Infectious Disease Physician Taxonomy 207RI0200X · Licence 315641 (NY)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1457738593
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedApril 28, 2015
Last updated in NPPESNovember 4, 2022
Certification dateNovember 4, 2022

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice New York University — 5884 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

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