Stephen Kaplan, M.D.
Internal Medicine Physician · Plymouth, MA
Stephen Kaplan, M.D. is an internal medicine physician with a practice address in Plymouth, Massachusetts, and NPI 1629236849, issued on May 23, 2008. Check the license (Massachusetts 232071, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Stephen Kaplan
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 232071 MA
Self-reported in NPPES; status is on the state search - Practice location
- 362 Court St, Plymouth, MA 02360
- Phone
- (508) 746-7543
- Enumerated
- May 23, 2008
- Record last updated
- Aug 31, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (508) 746-1334
- Medicare enrollment
- Enrolled (PECOS I20101012000926); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 2007
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 362 Court St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Stephen Kaplan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 232071Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.2 times the Medicare Part D claims of the average internal medicine physician in 2024
16,661 Medicare Part D claims for 1,147 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 675 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,202 claims
- Amlodipine Besylate683 claims
- Lisinopril657 claims
- Levothyroxine Sodium542 claims
- Omeprazole455 claims
- Losartan Potassium445 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
- Atrius Health IncNeedham, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen Kaplan among 6,825 internal medicine physician records in Massachusetts
Stephen Kaplan, M.D. 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 2008, is newer than 55% of them.
- NPI issued2008 · 55% of these records are older, 40% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2007 · median 2004 among the 4,103 with a school on file
- Record last updated2010 · 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).
31 internal medicine physician records list a practice address in Plymouth
They are 31 of the 1,954 NPPES records with a practice address in Plymouth, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Plymouth → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Caroline Alpert, M.D.Plymouth, MA 023601831177260
- Alfred Baum, M.D.Plymouth, MA 023601841239845
- David Hardy, M.D.Plymouth, MA 023601548238090
- Dariusz Hordejuk, M.D.Plymouth, MA 023601902884331
- Harvey Kowaloff, M.D.Plymouth, MA 023601700863016
- Wei Gen Li, M.D.Plymouth, MA 023601417904806
- Antonietta Mauri, MDPlymouth, MA 023601609838416
- Mead Northrop, M.D.Plymouth, MA 023601982630968
Common questions
What is Stephen Kaplan, M.D.'s NPI number?
Stephen Kaplan, M.D.'s National Provider Identifier (NPI) is 1629236849, issued on May 23, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Kaplan, M.D. located?
The NPPES record lists a practice address at 362 Court St, Plymouth, MA, 02360. Phone: (508) 746-7543. Providers update this record themselves, so call before visiting.
How can I verify Stephen Kaplan, M.D.'s license?
NPPES lists Massachusetts license number 232071, 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 Stephen Kaplan, M.D. prescribe under Medicare Part D?
In 2024, Stephen Kaplan, M.D. had 16,661 Medicare Part D claims for 1,147 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.