Alan C. Mullen, MD, PHD
Gastroenterology Physician · Worcester, MA
Alan C. Mullen, MD, PHD is a gastroenterology physician with a practice address in Worcester, Massachusetts, and NPI 1972639649, issued on Feb 26, 2007. Check the license (Massachusetts 234318, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Alan C. Mullen
- Credential
- MD, PHD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 234318 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Lake Ave N, Worcester, MA 01655
- Phone
- (508) 334-2846
- Enumerated
- Feb 26, 2007
- Record last updated
- Jul 11, 2022
- Medicaid ID
- 110087992A MA
- Medicare enrollment
- Enrolled (PECOS I20110509000228); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 2004
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 686 in Massachusetts → Look up another NPI →
Also registered at 55 Lake Ave N
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nawal Aamir, MDInternal Medicine Physician1588248926
- Amarys Abadie, CRNACertified Registered Nurse Anesthetist1992936843
- Paula Abate, NPNurse Practitioner1336265909
- Aly AbayazeedDiagnostic Radiology Physician1821221946
- Zainab AbbasDermatology Physician1609028000
- Mary-Alice Abbott, MDClinical Genetics (M.D.) Physician1982799417
Verify Alan C. Mullen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 234318Check 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
- Umass Memorial Medical Group IncWorcester, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alan C. Mullen among 686 gastroenterology physician records in Massachusetts
Alan C. Mullen, MD, PHD is one of 686 gastroenterology physician records with a practice address in Massachusetts. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 51% of them.
- NPI issued2007 · 51% of these records are older, 40% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2004 · median 2004 among the 491 with a school on file
- Record last updated2022 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Massachusetts
There are 686 gastroenterology physician records in Massachusetts.
All 686 in Massachusetts → Every provider in Worcester → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Graham Barnard, M.D.Worcester, MA 016551942284369
- Curtis Barry, MDWorcester, MA 016551326068479
- Anjali Basil, M.D.Worcester, MA 016551316993983
- Kanishka Bhattacharya, M.D.Worcester, MA 016551457333510
- David Cave, M.D.Worcester, MA 016551003898578
- Mitchell Gitkind, M.D.Worcester, MA 016551073596540
- Jean Marie Houghton, M.D. PHD.Worcester, MA 016551477536399
- Benjamin Hyatt, M.D.Worcester, MA 016551477518678
Common questions
What is Alan C. Mullen, MD, PHD's NPI number?
Alan C. Mullen, MD, PHD's National Provider Identifier (NPI) is 1972639649, issued on Feb 26, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Alan C. Mullen, MD, PHD located?
The NPPES record lists a practice address at 55 Lake Ave N, Worcester, MA, 01655. Phone: (508) 334-2846. Providers update this record themselves, so call before visiting.
How can I verify Alan C. Mullen, MD, PHD's license?
NPPES lists Massachusetts license number 234318, 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.