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

Alan C. Mullen, MD, PHD

Individual provider Gastroenterology Physician · NPI 1972639649

Alan C. Mullen, MD, PHD is a Gastroenterology in Worcester, Massachusetts. Graduated from Perelman School of Med at the University of Pennsylvania in 2004, 22 years ago. Practices with Umass Memorial Medical Group Inc, a 2,467-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
22
Trained at
Perelman School of Med at the University of Pennsylvania
Licensed in
MA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

55 Lake Ave N
Worcester, MA 01655-0002
Phone: (508) 334-2846
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 157 Union St, Marlborough, MA 01752-1228 — (508) 334-3068
  • 119 Belmont St, Worcester, MA 01605-2903 — (508) 334-2846
  • 21 Eastern Ave, Worcester, MA 01605-3094 — (508) 856-2500

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 234318 (MA)

Record details

NPI number1972639649
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedFebruary 26, 2007
Last updated in NPPESJuly 11, 2022
Certification dateJuly 11, 2022
Mailing addressPo Box 415348, Boston, MA 02241-5348

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolPERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA
Graduated 2004 (22 years in practice)
Group practice Umass Memorial Medical Group Inc — 2467 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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