IndividualActive
Ethan Balk, M.D.
NPI 1831136571 · Internal Medicine Physician · Boston, MA
Ethan Balk, M.D. is a Internal Medicine Physician provider in Boston, MA (NPI 1831136571).
Provider details
- NPI number
- 1831136571
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- License
- 77179 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
750 Washington St
Box 63
Boston, MA 02111-1526
Phone: (617) 636-3282
Street-level locationGet directions
Mailing address
750 Washington Street Box 63
Boston, MA 02111
Registry dates
- Enumerated
- 2006-06-01
- Last updated
- 2007-07-08
Frequently asked questions
- What is Ethan Balk's NPI number?
- Ethan Balk's National Provider Identifier (NPI) is 1831136571, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ethan Balk's specialty?
- Ethan Balk is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ethan Balk located?
- Ethan Balk's practice location on file with NPPES is 750 Washington St, Boston, MA 02111-1526.
- What is Ethan Balk's phone number?
- The practice phone number listed in the NPPES registry for Ethan Balk is (617) 636-3282.
- Is Ethan Balk's NPI active?
- Yes — Ethan Balk's NPI (1831136571) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.