John C. Platt, MD
Internal Medicine Physician · Auburn, MA
John C. Platt, MD is an internal medicine physician with a practice address in Auburn, Massachusetts, and NPI 1588638431, issued on Feb 16, 2006. Check the license (Massachusetts 50706, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- John C. Platt
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 50706 MA
Self-reported in NPPES; status is on the state search - Practice location
- 385 Southbridge St, Auburn, MA 01501
- Phone
- (508) 721-1172
- Enumerated
- Feb 16, 2006
- Record last updated
- Sep 8, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (508) 832-0859
- Medicaid ID
- 3087689 MA
- Medicare enrollment
- Enrolled (PECOS I20050324000477); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 1977
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 385 Southbridge St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Beth Bylund, PTPhysical Therapist1679553721
- Helen Collette, NPNurse Practitioner1376731679
- Brooke Di Anni, D.O.Pediatrics Physician1174580302
Verify John C. Platt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 50706Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% more Medicare Part D claims than the average internal medicine physician in 2024
4,010 Medicare Part D claims for 1,573 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 97 claims were for opioids.
Most prescribed
- Atorvastatin Calcium350 claims
- Lisinopril177 claims
- Omeprazole158 claims
- Levothyroxine Sodium141 claims
- Amlodipine Besylate136 claims
- Gabapentin126 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.
Bills Medicare through one group practice
- Reliant Medical Group IncAuburn, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John C. Platt among 6,825 internal medicine physician records in Massachusetts
John C. Platt, MD is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1977 · median 2004 among the 4,103 with a school on file
- Record last updated2020 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
26 internal medicine physician records list a practice address in Auburn
They are 26 of the 432 NPPES records with a practice address in Auburn, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Auburn → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Kevin Delacey, M.D.Auburn, MA 015011447231402
- Daniel Guilbert, MDAuburn, MA 015011144201732
- John Kelly, M.D.Auburn, MA 015011174599211
- Dennis Murphy, MDAuburn, MA 015011841266848
- Putcha Murthy, MDAuburn, MA 015011164493573
- Seema Naravane, MDAuburn, MA 015011821064478
- Natalie Osorio, MDAuburn, MA 015011215902846
- Ketaki Patel, M.D.Auburn, MA 015011801879846
Common questions
What is John C. Platt, MD's NPI number?
John C. Platt, MD's National Provider Identifier (NPI) is 1588638431, issued on Feb 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John C. Platt, MD located?
The NPPES record lists a practice address at 385 Southbridge St, Auburn, MA, 01501. Phone: (508) 721-1172. Providers update this record themselves, so call before visiting.
How can I verify John C. Platt, MD's license?
NPPES lists Massachusetts license number 50706, 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 C. Platt, MD prescribe under Medicare Part D?
In 2024, John C. Platt, MD had 4,010 Medicare Part D claims for 1,573 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.