Jason Baron, M.D.
NPI 1346477890 · Anatomic Pathology & Clinical Pathology Physician · Boston, MA
Jason Baron, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in Boston, MA (NPI 1346477890).
Provider details
- NPI number
- 1346477890
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- L-240121 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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
Mailing address
Registry dates
- Enumerated
- 2009-06-11
- Last updated
- 2009-06-11
Frequently asked questions
- What is Jason Baron's NPI number?
- Jason Baron's National Provider Identifier (NPI) is 1346477890, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jason Baron's specialty?
- Jason Baron is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Jason Baron located?
- Jason Baron's practice location on file with NPPES is Massachusetts General Hospital, Boston, MA 02114.
- What is Jason Baron's phone number?
- The practice phone number listed in the NPPES registry for Jason Baron is (617) 726-2967.
- Is Jason Baron's NPI active?
- Yes — Jason Baron's NPI (1346477890) is active in the NPPES registry as of the last update on 2009-06-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.