Individual Healthcare Provider
Gregory Haman, M.D.
Provider's NPPES record last updated: May 6, 2020
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1033590773
- Primary Specialty
- Internal Medicine
- Practice Location
- Willimantic, Connecticut
- Sole Proprietor
- Yes
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 18, 2026, 2:38 PM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Internal Medicine
Allopathic & Osteopathic Physicians
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Taxonomy code 207R00000X
Provider-Reported License Information
- Internal Medicine (Connecticut)
- 65062
- Internal Medicine (Illinois)
- 125066888
Practice Locations
Practice Location
5 Founders St Ste 100
Willimantic, Connecticut 06226-2049
Phone: (860) 423-9764
Additional Practice Location
5841 S Maryland Ave
Room A700; Mc-7082
Chicago, Illinois 60637-1447
Phone: (773) 702-6840
Additional Practice Location
5841 S Maryland Ave
Room A700; Mc-7082
Chicago, Illinois 60637-1447
Phone: (773) 702-6840
Additional Practice Location
Cermak Health Services of Cook County
2800 South California Avenue
Chicago, Illinois 60608-5107
Phone: (773) 674-7488
Record Information
- Enumeration Date
- June 17, 2015
- Provider's NPPES Record Last Updated
- May 6, 2020
- Certification Date
- May 6, 2020
- NPISignal NPPES Dataset
- August 2026
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