Michael S. Kiernan, M.D.
Cardiovascular Disease Physician · Boston, MA
Michael S. Kiernan, M.D. is a cardiovascular disease physician with a practice address in Boston, Massachusetts, and NPI 1891985933, issued on Jul 25, 2007. Check the license (Massachusetts 232747, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Michael S. Kiernan
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- 232747 MA
Self-reported in NPPES; status is on the state search - Practice location
- 800 Washington St, Boston, MA 02111
- Phone
- (617) 636-5000
- Enumerated
- Jul 25, 2007
- Record last updated
- Mar 7, 2022
- Medicaid ID
- 110085606A MA
- Medicare enrollment
- Enrolled (PECOS I20090115000141); accepts Medicare assignment
- Medical or professional school
- University Of Connecticut School Of Medicine, 2004
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 1,080 in Massachusetts → Look up another NPI →
Also registered at 800 Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jeffrey Aalberg, MD, MPHSurgery Physician1326788027
- Omer Abbak, PHARMDPharmacist1114500337
- Aya Abdelnaser, MDStudent in an Organized Health Care Education/Training Program1770425373
- Marie Elise Abi Antoun, MDObstetrics & Gynecology Physician1356042626
- Ahmad AboalfarajSurgery Physician1538517651
- Tala Abu Samaan, MDStudent in an Organized Health Care Education/Training Program1376386250
Verify Michael S. Kiernan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 232747Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
1,323 Medicare Part D claims for 157 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.
Most prescribed
- Metoprolol Succinate120 claims
- Entresto79 claims
- Spironolactone75 claims
- Warfarin Sodium64 claims
- Losartan Potassium54 claims
- Atorvastatin Calcium53 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: $909.97
6 payments; by number, the most common kind was food and beverage; the largest payer was CVRx, Inc. The 16,686 providers of this specialty with any payment received $3,819.56 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 2 group practices
- Cardiovascular Center AT Tufts Medical Center IncBoston, MA
- 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).
Michael S. Kiernan among 1,080 cardiovascular disease physician records in Massachusetts
Michael S. Kiernan, M.D. is one of 1,080 cardiovascular disease 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 2007, is newer than 55% of them.
- NPI issued2007 · 55% of these records are older, 36% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2004 · median 2001 among the 698 with a school on file
- Record last updated2022 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
476 cardiovascular disease physician records list a practice address in Boston
They are 476 of the 41,865 NPPES records with a practice address in Boston, and 1,080 cardiovascular disease physician records in Massachusetts.
All 1,080 in Massachusetts → Every provider in Boston → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Robert Blanton, M.D.Boston, MA 021111013935436
- Robert Blaustein, M.D.Boston, MA 021111447298740
- Jonas Galper, MDBoston, MA 021111255414611
- Gordon Huggins, M.D.Boston, MA 021111255345559
- Iris Jaffe, M.D.Boston, MA 021111073561163
- Richard Karas, MDBoston, MA 021111073620431
- Carey Kimmelstiel, MDBoston, MA 021111043326713
- Marvin Konstam, MDBoston, MA 021111053428474
Common questions
What is Michael S. Kiernan, M.D.'s NPI number?
Michael S. Kiernan, M.D.'s National Provider Identifier (NPI) is 1891985933, issued on Jul 25, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Michael S. Kiernan, M.D. located?
The NPPES record lists a practice address at 800 Washington St, Boston, MA, 02111. Phone: (617) 636-5000. Providers update this record themselves, so call before visiting.
How can I verify Michael S. Kiernan, M.D.'s license?
NPPES lists Massachusetts license number 232747, 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 Michael S. Kiernan, M.D. prescribe under Medicare Part D?
In 2024, Michael S. Kiernan, M.D. had 1,323 Medicare Part D claims for 157 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.