Rosemary Larson, PA-C
NPI 1851286363 · Physician Assistant · Springfield, MA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rosemary Larson, PA-C is a Physician Assistant provider in Springfield, MA (NPI 1851286363).
Provider details
- NPI number
- 1851286363
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
- Physician Assistant363A00000X
Physician Assistants & Advanced Practice Nursing Providers
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
2 documented practice locations
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
Additional practice locations (1)
- 14 Maple StUxbridge, MA 01569-1299Phone: (508) 375-8043
Registry dates
- Enumerated
- 2025-06-12
- Last updated
- 2025-07-10
- Certified
- 2025-07-10
Frequently asked questions
- What is Rosemary Larson's NPI number?
- Rosemary Larson's National Provider Identifier (NPI) is 1851286363, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rosemary Larson's specialty?
- Rosemary Larson is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Rosemary Larson located?
- Rosemary Larson's practice location on file with NPPES is 100 Wason Ave Ste 100, Springfield, MA 01107-1299.
- What is Rosemary Larson's phone number?
- The practice phone number listed in the NPPES registry for Rosemary Larson is (413) 732-7426.
- Does Rosemary Larson accept Medicare?
- Rosemary Larson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rosemary Larson's NPI active?
- Yes — Rosemary Larson's NPI (1851286363) is active in the NPPES registry as of the last update on 2025-07-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.