Nathan Sim, MD
NPI 1982408951 · Student in an Organized Health Care Education/Training Program · Boston, MA
Enrolled with Medicare as Order and Referring Only - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathan Sim, MD is a Student in an Organized Health Care Education/Training Program provider in Boston, MA (NPI 1982408951).
Provider details
- NPI number
- 1982408951
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
83% 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
- 2025-04-01
- Last updated
- 2025-04-01
- Certified
- 2025-04-01
Frequently asked questions
- What is Nathan Sim's NPI number?
- Nathan Sim's National Provider Identifier (NPI) is 1982408951, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Sim's specialty?
- Nathan Sim is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Nathan Sim located?
- Nathan Sim's practice location on file with NPPES is 75 Francis St, Boston, MA 02115-6110.
- What is Nathan Sim's phone number?
- The practice phone number listed in the NPPES registry for Nathan Sim is (617) 732-6248.
- Does Nathan Sim accept Medicare?
- Nathan Sim is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathan Sim's NPI active?
- Yes — Nathan Sim's NPI (1982408951) is active in the NPPES registry as of the last update on 2025-04-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.