Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Douglas J Grunwald, MD

Individual provider Gastroenterology Physician · NPI 1154616001

Dr. Douglas J Grunwald, MD is a Gastroenterology in Hamden, Connecticut. Graduated from University of Chicago, Pritzker School of Medicine in 2011, 15 years ago. Practices with Hhc Physician Services PLLC, a 136-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Connecticut.

Years since qualifying
15
Trained at
University of Chicago, Pritzker School of Medicine
Licensed in
CT
In the registry since
2011
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

2200 Whitney Ave Ste 360
Hamden, CT 06518-3602
Phone: (203) 281-4463
Fax: (203) 287-2930
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 56120 (CT)

Record details

NPI number1154616001
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 17, 2011
Last updated in NPPESJuly 21, 2022
Certification dateMay 27, 2021

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Medical schoolUNIVERSITY OF CHICAGO, PRITZKER SCHOOL OF MEDICINE
Graduated 2011 (15 years in practice)
Group practice Hhc Physician Services Pllc — 136 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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