Marshall S. Katz, M.D.
Cardiovascular Disease Physician · Boston, MA
Marshall S. Katz, M.D. is a cardiovascular disease physician with a practice address in Boston, Massachusetts, and NPI 1124024013, issued on Jun 24, 2005. Check the license (Massachusetts 78156, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Marshall S. Katz
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License numbers
- 78156 MA
035987 CT
Self-reported in NPPES; status is on the state search - Practice location
- 133 Brookline Ave, Boston, MA 02215
- Phone
- (617) 421-6050
- Enumerated
- Jun 24, 2005
- Record last updated
- Sep 23, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (617) 421-6083
- Medicaid IDs
- 001359878 CT
110058992A MA - Medicare enrollment
- Enrolled (PECOS I20081103000061); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 1991
- 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 133 Brookline Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Andrew Allmendinger, DODiagnostic Radiology Physician1972820942
- Dana An, LCSWClinical Social Worker1215108238
Verify Marshall S. Katz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 78156Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average cardiovascular disease physician in 2024
8,203 Medicare Part D claims for 955 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Atorvastatin Calcium945 claims
- Metoprolol Succinate855 claims
- Eliquis827 claims
- Amlodipine Besylate439 claims
- Furosemide429 claims
- Rosuvastatin Calcium363 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 IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marshall S. Katz among 1,080 cardiovascular disease physician records in Massachusetts
Marshall S. Katz, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 83% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1991 · median 2001 among the 698 with a school on file
- Record last updated2011 · 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
- James Ducksoon Chang, M.D.Boston, MA 022151184661878
- Patricia Come, M.D.Boston, MA 022151528005741
- Zareen Farukhi, M.D.Boston, MA 022151568431187
- Eli Gelfand, M.D.Boston, MA 022151659339588
- Thomas Hauser, M.D.Boston, MA 022151285671800
- Robert Healy, M.D.Boston, MA 022151295772887
- Joseph Kannam, M.D.Boston, MA 022151992742779
- Benet Kolman, M.D.Boston, MA 022151831146000
Common questions
What is Marshall S. Katz, M.D.'s NPI number?
Marshall S. Katz, M.D.'s National Provider Identifier (NPI) is 1124024013, issued on Jun 24, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Marshall S. Katz, M.D. located?
The NPPES record lists a practice address at 133 Brookline Ave, Boston, MA, 02215. Phone: (617) 421-6050. Providers update this record themselves, so call before visiting.
How can I verify Marshall S. Katz, M.D.'s license?
NPPES lists Massachusetts license number 78156, 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 Marshall S. Katz, M.D. prescribe under Medicare Part D?
In 2024, Marshall S. Katz, M.D. had 8,203 Medicare Part D claims for 955 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.