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

Elizabeth Mary Conway O'Callahan, MD

Individual provider Family Medicine Physician · NPI 1346773074

Elizabeth Mary Conway O'Callahan, MD is a Family Practice in Brooklyn, New York. Qualified in 2017, 9 years ago. Practices with Mount Sinai School of Medicine, a 30-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Massachusetts and New York.

Years since qualifying
9
Licensed in
MA, NY
In the registry since
2017
Specialties on file
2
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

165 Smith St
Brooklyn, NY 11201-6337
Phone: (212) 441-4380
Fax: (212) 867-4353
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 326 Nichols Rd, Fitchburg, MA 01420-1914 — (978) 878-8100

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 305869 (NY)
Family Medicine Physician Taxonomy 207Q00000X · Licence 285671 (MA)

Record details

NPI number1346773074
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 10, 2017
Last updated in NPPESDecember 1, 2021
Certification dateDecember 1, 2021

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolOTHER
Graduated 2017 (9 years in practice)
Group practice Mount Sinai School Of Medicine — 30 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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