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

Dr. Jean Herold Ancion, MD

Individual provider Hospitalist Physician · NPI 1265609127

Dr. Jean Herold Ancion, MD is a Hospitalist in Brooklyn, New York. Qualified in 2004, 22 years ago. Practices with Mount Sinai School of Medicine, a 151-clinician group and accepts Medicare assignment. Licensed in Connecticut and New York.

Years since qualifying
22
Licensed in
CT, NY
In the registry since
2008
Specialties on file
3
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

4213 Church Ave
Brooklyn, NY 11203-3011
Phone: (718) 287-0868
Fax: (718) 287-1375
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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 245310 (NY)
Hospitalist Physician Taxonomy 208M00000X · Licence 245310 (NY)
Hospitalist Physician Taxonomy 208M00000X · Licence 53543 (CT)

Record details

NPI number1265609127
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 9, 2008
Last updated in NPPESApril 28, 2025
Certification dateApril 28, 2025

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Group practice Mount Sinai School Of Medicine — 151 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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