Sarah Haessler, MD
NPI 1356446140 · Infectious Disease Physician · Springfield, MA
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sarah Haessler, MD is a Infectious Disease Physician provider in Springfield, MA (NPI 1356446140).
Provider details
- NPI number
- 1356446140
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 224421 (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
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)
- 3300 Main St3rd Floor Suite C&dSpringfield, MA 01107-1112Phone: (413) 794-7394Fax: (413) 794-7136
Registry dates
- Enumerated
- 2006-09-14
- Last updated
- 2018-01-05
Frequently asked questions
- What is Sarah Haessler's NPI number?
- Sarah Haessler's National Provider Identifier (NPI) is 1356446140, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sarah Haessler's specialty?
- Sarah Haessler is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Sarah Haessler located?
- Sarah Haessler's practice location on file with NPPES is 3300 Main St, Springfield, MA 01107-1112.
- What is Sarah Haessler's phone number?
- The practice phone number listed in the NPPES registry for Sarah Haessler is (413) 794-7394.
- Does Sarah Haessler accept Medicare?
- Sarah Haessler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sarah Haessler's NPI active?
- Yes — Sarah Haessler's NPI (1356446140) is active in the NPPES registry as of the last update on 2018-01-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.