Sarah D. Haessler, MD
Infectious Disease Physician · Springfield, MA
Sarah D. Haessler, MD is an infectious disease physician with a practice address in Springfield, Massachusetts, and NPI 1356446140, issued on Sep 14, 2006. Check the license (Massachusetts 224421, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Sarah D. Haessler
- Credential
- MD
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- 224421 MA
Self-reported in NPPES; status is on the state search - Practice location
- 3300 Main St, Springfield, MA 01107
- Phone
- (413) 794-7394
- Enumerated
- Sep 14, 2006
- Record last updated
- Jan 5, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (413) 794-7136
- Medicare enrollment
- Enrolled (PECOS I20050713000410); accepts Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 1999
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 487 in Massachusetts → Look up another NPI →
Also registered at 3300 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kassandra Allbright, MDPulmonary Disease Physician1194213942
- Varun Teja Angajala, MDGastroenterology Physician1962030940
- Olga Aponte, MDChild & Adolescent Psychiatry Physician1649369059
- Hany Aziz, MDCardiovascular Disease Physician1679580385
Verify Sarah D. Haessler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 224421Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Baystate Medical Practices IncSpringfield, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sarah D. Haessler among 487 infectious disease physician records in Massachusetts
Sarah D. Haessler, MD is one of 487 infectious disease physician records with a practice address in Massachusetts. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 17% of them.
- NPI issued2006 · 17% of these records are older, 47% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1999 · median 2003 among the 296 with a school on file
- Record last updated2018 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Massachusetts
There are 487 infectious disease physician records in Massachusetts.
All 487 in Massachusetts → Every provider in Springfield → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Richard Brown, MDSpringfield, MA 011071336244193
- Esteban Delpilar-Morales, M.D.Springfield, MA 011071396974754
- Megan Gallagher, M.D.Springfield, MA 011071114284890
- St. John McGrath, M.D.Springfield, MA 011071922112820
- Armando Paez, MDSpringfield, MA 011071518978154
- Emily Ramasra, M.D.Springfield, MA 011071013391887
- Urmee Saha, M.D.Springfield, MA 011071730611963
- Hans Schlecht, M.D.Springfield, MA 011071518021617
Common questions
What is Sarah D. Haessler, MD's NPI number?
Sarah D. Haessler, MD's National Provider Identifier (NPI) is 1356446140, issued on Sep 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Sarah D. Haessler, MD located?
The NPPES record lists a practice address at 3300 Main St, Springfield, MA, 01107. Phone: (413) 794-7394. Providers update this record themselves, so call before visiting.
How can I verify Sarah D. Haessler, MD's license?
NPPES lists Massachusetts license number 224421, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.