Douglas Mah, MD
Clinical Cardiac Electrophysiology Physician · Boston, MA
Douglas Mah, MD is a clinical cardiac electrophysiology physician with a practice address in Boston, Massachusetts, and NPI 1912062324, issued on Dec 26, 2006. Check the license (Massachusetts 244768, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Douglas Mah
- Credential
- MD
- Primary taxonomy
- Clinical Cardiac Electrophysiology Physician 207RC0001X
- License number
- 244768 MA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Longwood Avenue, Boston, MA 02115
- Phone
- (617) 355-6000
- Enumerated
- Dec 26, 2006
- Record last updated
- Sep 18, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20120104000634); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical cardiac electrophysiology physician records → All 116 in Massachusetts → Look up another NPI →
Also registered at 300 Longwood Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Douglas Mah in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 244768Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average clinical cardiac electrophysiology physician in 2024
22 Medicare Part D claims, against an average of 1,710 among the 3,173 providers of this specialty who prescribed in Part D.
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: $2,716.60
23 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. The 3,167 providers of this specialty with any payment received $10,651.37 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
- Boston Childrens Heart Foundation IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Douglas Mah among 116 clinical cardiac electrophysiology physician records in Massachusetts
Douglas Mah, MD is one of 116 clinical cardiac electrophysiology physician records with a practice address in Massachusetts. 89% 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 13% of them.
- NPI issued2006 · 13% of these records are older, 56% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 80% of these records are
- Graduated2004 · median 2002 among the 93 with a school on file
- Record last updated2020 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0001X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Clinical Cardiac Electrophysiology Physician providers in Massachusetts
There are 116 clinical cardiac electrophysiology physician records in Massachusetts.
All 116 in Massachusetts → Every provider in Boston → Clinical Cardiac Electrophysiology Physician nationwide →
The 8 clinical cardiac electrophysiology physician records with the nearest ZIP codes
- Elad Anter, M.D.Boston, MA 021151891832499
- Laura Bevilacqua, MDBoston, MA 021151700875507
- Vassilios Bezzerides, M.D., PH.D.Boston, MA 021151194992834
- Elizabeth Dewitt, M.D.Boston, MA 021151851527402
- Laurence Epstein, MDBoston, MA 021151457318859
- Pipin Kojodjojo, M,D., PH.D.Boston, MA 021151033440474
- Bruce Koplan, MDBoston, MA 021151083663298
- Melanie Maytin, M.D.Boston, MA 021151619909132
Common questions
What is Douglas Mah, MD's NPI number?
Douglas Mah, MD's National Provider Identifier (NPI) is 1912062324, issued on Dec 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Douglas Mah, MD located?
The NPPES record lists a practice address at 300 Longwood Avenue, Boston, MA, 02115. Phone: (617) 355-6000. Providers update this record themselves, so call before visiting.
How can I verify Douglas Mah, MD's license?
NPPES lists Massachusetts license number 244768, 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 Douglas Mah, MD prescribe under Medicare Part D?
In 2024, Douglas Mah, MD had 22 Medicare Part D claims; the average among clinical cardiac electrophysiology physician prescribers was 1,710. 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.