James Joseph Connolly, M.D.
Gastroenterology Physician · North Chelmsford, MA
James Joseph Connolly, M.D. is a gastroenterology physician with a practice address in North Chelmsford, Massachusetts, and NPI 1609255223, issued on May 28, 2015. Check the license (Massachusetts 291075, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- James Joseph Connolly
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- 291075 MA
61607 CT
Self-reported in NPPES; status is on the state search - Practice location
- 20 Research PL Ste 220, North Chelmsford, MA 01863
- Phone
- (978) 459-6737
- Enumerated
- May 28, 2015
- Record last updated
- Jun 15, 2022
- Fax
- (855) 818-1869
- Medicare enrollment
- Enrolled (PECOS I20220628002143); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 20 Research PL Ste 220
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nitin Aggarwal, M.D.Gastroenterology Physician1407145402
- Heidi Ahmed, M.D.Gastroenterology Physician1801276472
- Jacqueline Chu, MDInternal Medicine Physician1619359858
- Amanda Holmes, P.T.Specialist1528218682
- Melanie Kappadakunnel, D.O.Gastroenterology Physician1265883615
- Kristen McFadden, NPNurse Practitioner1518405141
Verify James Joseph Connolly in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 291075Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
42% fewer Medicare Part D claims than the average gastroenterology physician in 2024
468 Medicare Part D claims for 209 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Omeprazole118 claims
- Famotidine65 claims
- Sutab61 claims
- Sod Sulf-Potass Sulf-Mag Sulf47 claims
- Pantoprazole Sodium44 claims
- Sucralfate16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $1,176.97
46 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Integrated Gastroenterology Consultants, P.C.Andover, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
4 gastroenterology physician records list a practice address in North Chelmsford
They are 4 of the 159 NPPES records with a practice address in North Chelmsford, and 686 gastroenterology physician records in Massachusetts.
All 4 in North Chelmsford → All 686 in Massachusetts → Every provider in North Chelmsford →
Other gastroenterology physician records in Massachusetts
- Robert Aaron, MDStoneham, MA1962694323
- Michael Aaronson, MDBeverly, MA1366547739
- Diane Abraczinskas, MDBoston, MA1811988488
- Nitin Aggarwal, M.D.North Chelmsford, MA1407145402
- Jaya Agrawal, M.D.Florence, MA1316979842
- Heidi Ahmed, M.D.North Chelmsford, MA1801276472
- Lynne Ahn, MDFramingham, MA1144269143
- Hiroyuki Aihara, M.D.Boston, MA1619395795
- Mona AkbariSouth Weymouth, MA1871720037
- Geetanjali Akerkar, M.D.Chelmsford, MA1144289166
Common questions
What is James Joseph Connolly, M.D.'s NPI number?
James Joseph Connolly, M.D.'s National Provider Identifier (NPI) is 1609255223, issued on May 28, 2015. An NPI identifies a provider in billing; it is not a license.
Where is James Joseph Connolly, M.D. located?
The NPPES record lists a practice address at 20 Research PL Ste 220, North Chelmsford, MA, 01863. Phone: (978) 459-6737. Providers update this record themselves, so call before visiting.
How can I verify James Joseph Connolly, M.D.'s license?
NPPES lists Massachusetts license number 291075, 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.
How much does James Joseph Connolly, M.D. prescribe under Medicare Part D?
In 2024, James Joseph Connolly, M.D. had 468 Medicare Part D claims for 209 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
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.