James Kasser, MD
NPI 1801836887 · Pediatric Orthopaedic Surgery Physician · Boston, MA
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Kasser, MD is a Pediatric Orthopaedic Surgery Physician provider in Boston, MA (NPI 1801836887).
Provider details
- NPI number
- 1801836887
- Entity type
- Individual
- Primary specialty
- Pediatric Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 45761 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2006-06-07
- Last updated
- 2012-10-10
Frequently asked questions
- What is James Kasser's NPI number?
- James Kasser's National Provider Identifier (NPI) is 1801836887, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Kasser's specialty?
- James Kasser is listed in the NPPES registry with a primary specialty of Pediatric Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is James Kasser located?
- James Kasser's practice location on file with NPPES is 300 Longwood Ave, Boston, MA 02115-5724.
- What is James Kasser's phone number?
- The practice phone number listed in the NPPES registry for James Kasser is (617) 355-6021.
- Does James Kasser accept Medicare?
- James Kasser is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Kasser's NPI active?
- Yes — James Kasser's NPI (1801836887) is active in the NPPES registry as of the last update on 2012-10-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.