John J. Diggins, MD
Psychiatry Physician · Southbridge, MA
John J. Diggins, MD is a psychiatry physician with a practice address in Southbridge, Massachusetts, and NPI 1952519415, issued on May 18, 2007. Check the license (Massachusetts 238052, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- John J. Diggins
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 238052 MA
Self-reported in NPPES; status is on the state search - Practice location
- 29 Pine St, Southbridge, MA 01550
- Phone
- (508) 765-9167
- Enumerated
- May 18, 2007
- Record last updated
- May 2, 2025
- Fax
- (508) 764-2462
- Medicare enrollment
- Enrolled (PECOS I20081224000239); accepts Medicare assignment
- Medical or professional school
- University Of Cincinnati College Of Medicine, 2003
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,736 in Massachusetts → Look up another NPI →
Also registered at 29 Pine St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Deborah Abrahams, RNPsychiatric/Mental Health Registered Nurse1831676782
- Anne AsheAddiction (Substance Use Disorder) Counselor1356674915
- Chukwuemeka Asiegbu, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1023745759
- Nancy Auger, LCSWAddiction (Substance Use Disorder) Counselor1962523068
- Shawn Barney, RNPsychiatric/Mental Health Registered Nurse1275041691
- Christina Beesley, MACounselor1174646855
Verify John J. Diggins in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 238052Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average psychiatry physician in 2024
93 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Aripiprazole17 claims
- Clonidine Hcl12 claims
- Sertraline Hcl12 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.
The MIPS final score for 2023 (Medicare payment program): 97 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
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).
John J. Diggins among 2,736 psychiatry physician records in Massachusetts
John J. Diggins, MD is one of 2,736 psychiatry physician records with a practice address in Massachusetts. 65% 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 49% of them.
- NPI issued2007 · 49% of these records are older, 37% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 45% of these records are
- Graduated2003 · median 2005 among the 1,219 with a school on file
- Record last updated2025 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 psychiatry physician records list a practice address in Southbridge
They are 7 of the 546 NPPES records with a practice address in Southbridge, and 2,736 psychiatry physician records in Massachusetts.
All 2,736 in Massachusetts → Every provider in Southbridge → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Carolyn Heimberg, M.D.Southbridge, MA 015501376581728
- Jyotikaben Patel, MDSouthbridge, MA 015501538102066
- Joanna Poluha-O'Neil, M.D.Southbridge, MA 015501235113481
- Tina Render, M.D.Southbridge, MA 015501578621397
- Marianne Leigh Smith, M.D.Southbridge, MA 015501033156732
- Neelam Varshney, M.D.Shrewsbury, MA 015451821258500
- Maureen Malin, M.D.Princeton, MA 015411043383847
- Meenakshi Vemuri, M.D.Sturbridge, MA 015661720066343
Common questions
What is John J. Diggins, MD's NPI number?
John J. Diggins, MD's National Provider Identifier (NPI) is 1952519415, issued on May 18, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John J. Diggins, MD located?
The NPPES record lists a practice address at 29 Pine St, Southbridge, MA, 01550. Phone: (508) 765-9167. Providers update this record themselves, so call before visiting.
How can I verify John J. Diggins, MD's license?
NPPES lists Massachusetts license number 238052, 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 John J. Diggins, MD prescribe under Medicare Part D?
In 2024, John J. Diggins, MD had 93 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
What is John J. Diggins, MD's MIPS final score?
The 2023 MIPS final score is 97 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.