Stephen Mackler, M.D.
Internal Medicine Physician · Dartmouth, MA
Stephen Mackler, M.D. is an internal medicine physician with a practice address in Dartmouth, Massachusetts, and NPI 1669442745, issued on Jan 23, 2006. Check the license (Massachusetts 51204, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Stephen Mackler
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 51204 MA
Self-reported in NPPES; status is on the state search - Practice location
- 535 Faunce Corner RD, Dartmouth, MA 02747
- Phone
- (508) 996-3991
- Enumerated
- Jan 23, 2006
- Record last updated
- Apr 24, 2023
- Medicaid ID
- 6186939 MA
- Medicare enrollment
- Enrolled (PECOS I20050324000094); may accept Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 1981
- 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 535 Faunce Corner RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Erica Ahaesy, FNPFamily Nurse Practitioner1568891620
- Debby Almeida, MDFamily Medicine Physician1134289127
- Jean AmorePhysician Assistant1932082963
- Sharon Anderson, M.S., CCC-AAudiologist1083864110
- Luiza Arbain, PHARMD.Pharmacist1245232099
- Selina AvelinoAdult Health Nurse Practitioner1831839059
Verify Stephen Mackler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 51204Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average internal medicine physician in 2024
7,604 Medicare Part D claims for 731 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 250 claims were for opioids.
Most prescribed
- Atorvastatin Calcium743 claims
- Amlodipine Besylate742 claims
- Omeprazole406 claims
- Levothyroxine Sodium357 claims
- Alprazolam338 claims
- Simvastatin305 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: $82.04
4 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Lifespan Physician Group OF Massachusetts IncDartmouth, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen Mackler among 6,825 internal medicine physician records in Massachusetts
Stephen Mackler, 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 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
- Graduated1981 · median 2004 among the 4,103 with a school on file
- Record last updated2023 · 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).
10 internal medicine physician records list a practice address in Dartmouth
They are 10 of the 513 NPPES records with a practice address in Dartmouth, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Dartmouth → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Gloriane Afonso-Fede, M.D.Dartmouth, MA 027471376525063
- Elliott Anderson, MDNorth Dartmouth, MA 027471750358164
- James Chen, M.D.Dartmouth, MA 027471225018062
- Scott Henderson, M.D.N Dartmouth, MA 027471427037662
- Bing Liu, M.D.N Dartmouth, MA 027471699745810
- Judith Miesner, D.O.North Dartmouth, MA 027471669448635
- Barbara Pearl, M.D.North Dartmouth, MA 027471295701274
- Earl Potts, MDN Dartmouth, MA 027471679560791
Common questions
What is Stephen Mackler, M.D.'s NPI number?
Stephen Mackler, M.D.'s National Provider Identifier (NPI) is 1669442745, issued on Jan 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Mackler, M.D. located?
The NPPES record lists a practice address at 535 Faunce Corner RD, Dartmouth, MA, 02747. Phone: (508) 996-3991. Providers update this record themselves, so call before visiting.
How can I verify Stephen Mackler, M.D.'s license?
NPPES lists Massachusetts license number 51204, 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 Mackler, M.D. prescribe under Medicare Part D?
In 2024, Stephen Mackler, M.D. had 7,604 Medicare Part D claims for 731 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.