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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

ETHAN BALK M.D.
NPI 1831136571
Internal Medicine in Boston, MA

Active since June 01, 2006
750 WASHINGTON ST, BOX 63, BOSTON, MA 02111(617) 636-3282 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Ethan Balk M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ETHAN BALK M.D. (NPI 1831136571) is an individual internal medicine provider in Boston, Massachusetts, licensed in Massachusetts (77179) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1831136571
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameETHAN BALKCredential: M.D.
Location Address750 WASHINGTON ST, BOX 63Boston, MA 02111-1526
Mailing Address750 Washington Street Box 63, New England Medical CenterBoston, MA 02111 · (617) 636-3282
Phone(617) 636-3282
Sole ProprietorNo
Enumeration DateJune 1, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1831136571 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MA · 77179
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
750 WASHINGTON ST, Boston, MA 02111
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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KEIKO UEDA MPH, RD, LDN
Dietitian, Registered
750 WASHINGTON ST, TNEMC BOX#434
BOSTON, MA 02111
Suffolk County (617) 636-5458
COLLEEN MCARTOR CRNA
Nurse Anesthetist, Certified Registered
750 WASHINGTON ST, NEMC BOX #7105
BOSTON, MA 02111
Suffolk County (617) 636-5000
DR. KATHLEEN BUNGAY PHARMD, MS
Pharmacist (Psychiatric)
750 WASHINGTON ST, THE HEALTH INSTITUTE, BOX 345
BOSTON, MA 02111
Suffolk County (617) 636-3292
ALEXIS MADEJ M.S., R.D., L.D.N.
Dietitian, Registered
750 WASHINGTON ST, FRANCES STERN NUTRITION CENTER
BOSTON, MA 02111
Suffolk County (617) 636-5273
DR. NADINE YOUSSEF M.D.
Emergency Medicine
750 WASHINGTON ST, BOX 311 / DEPARTMENT OF EMERGENCY MEDICINE
BOSTON, MA 02111
Suffolk County (617) 636-4723
DR. GORDON M SAPERIA MD
Internal Medicine (Interventional Cardiology)
750 WASHINGTON ST
BOSTON, MA 02111
Suffolk County (617) 636-5000
ANBUKILI K. CHETTY M.D.
Pediatrics (Pediatric Pulmonology)
750 WASHINGTON ST, NEMC BOX #836
BOSTON, MA 02111
Suffolk County (617) 636-5000
KATIE WAKELEY M.D.
Obstetrics & Gynecology
750 WASHINGTON ST, NEMC BOX #836
BOSTON, MA 02111
Suffolk County (617) 636-5000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ethan Balk's NPI number?

The NPI number for Ethan Balk is 1831136571. It was assigned to this individual provider in the NPPES registry on June 1, 2006.

Where is Ethan Balk located?

Ethan Balk practices at 750 Washington St Box 63, Boston, MA 02111. The listed phone number is (617) 636-3282.

What is Ethan Balk's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Ethan Balk was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.