Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Marc L. Guttman, MD

Individual provider Emergency Medicine Physician · NPI 1295709186

Marc L. Guttman, MD practises Emergency Medicine in Willimantic, Connecticut. Graduated from State University of Ny Upstate Medical University in 2000, 26 years ago. Practices with The William W Backus Hospital, a 247-clinician group and accepts Medicare assignment. Licensed in Connecticut.

Years since qualifying
26
Trained at
State University of Ny Upstate Medical University
Licensed in
CT
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

112 Mansfield Ave
Willimantic, CT 06226-2045 Not confirmed with CMS for 18 years — call before visiting
Phone: (860) 456-9116
Fax: (860) 963-6368
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 041783 (CT)

Record details

NPI number1295709186
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 15, 2006
Last updated in NPPESJuly 29, 2008

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolSTATE UNIVERSITY OF NY UPSTATE MEDICAL UNIVERSITY
Graduated 2000 (26 years in practice)
Group practice The William W Backus Hospital — 247 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients335
Services billed 370 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at The William W Backus Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 247 clinicians in the practice; 12 are shown here.

Other providers in Willimantic