Joel Hirschhorn, MD, PHD
NPI 1063597805 · Pediatric Endocrinology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joel Hirschhorn, MD, PHD is a Pediatric Endocrinology Physician provider in Boston, MA (NPI 1063597805).
Provider details
- NPI number
- 1063597805
- Entity type
- Individual
- Primary specialty
- Pediatric Endocrinology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 205112 (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
19 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
- 2006-10-26
- Last updated
- 2017-03-07
Frequently asked questions
- What is Joel Hirschhorn's NPI number?
- Joel Hirschhorn's National Provider Identifier (NPI) is 1063597805, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joel Hirschhorn's specialty?
- Joel Hirschhorn is listed in the NPPES registry with a primary specialty of Pediatric Endocrinology Physician (Allopathic & Osteopathic Physicians).
- Where is Joel Hirschhorn located?
- Joel Hirschhorn's practice location on file with NPPES is 300 Longwood Ave, Boston, MA 02115-5724.
- What is Joel Hirschhorn's phone number?
- The practice phone number listed in the NPPES registry for Joel Hirschhorn is (617) 355-2129.
- Does Joel Hirschhorn accept Medicare?
- Joel Hirschhorn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joel Hirschhorn's NPI active?
- Yes — Joel Hirschhorn's NPI (1063597805) is active in the NPPES registry as of the last update on 2017-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.