Zachary Marnoy, MD
Internal Medicine Physician · Burlington, MA
Zachary Marnoy, MD is an internal medicine physician with a practice address in Burlington, Massachusetts, and NPI 1194247841, issued on Jul 14, 2017. Check the license (Massachusetts 285295, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Zachary Marnoy
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 285295 MA
Self-reported in NPPES; status is on the state search - Practice location
- 41 Burlington Mall RD, Burlington, MA 01805
- Phone
- (781) 744-5100
- Enumerated
- Jul 14, 2017
- Record last updated
- Jul 21, 2022
- Medicare enrollment
- Enrolled (PECOS I20251201003641); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 41 Burlington Mall RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Zachary Marnoy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 285295Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average internal medicine physician in 2024
378 Medicare Part D claims for 197 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. 22 claims were for opioids.
Most prescribed
- Amoxicillin-Clavulanate Potass28 claims
- Prednisone24 claims
- Furosemide21 claims
- Pantoprazole Sodium18 claims
- Eliquis17 claims
- Atorvastatin Calcium16 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.
The MIPS final score for 2023 (Medicare payment program): 91.4 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Southern California Permanente Medical GroupDowney, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Zachary Marnoy among 6,825 internal medicine physician records in Massachusetts
Zachary Marnoy, MD 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 2017, is newer than 79% of them.
- NPI issued2017 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2017 · median 2004 among the 4,103 with a school on file
- Record last updated2022 · 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).
144 internal medicine physician records list a practice address in Burlington
They are 144 of the 2,620 NPPES records with a practice address in Burlington, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Burlington → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jerry Blaine, M.D.Burlington, MA 018051083716716
- Sandeep Dhillon, M.D.Burlington, MA 018051942225040
- Durathun Farha, MDBurlington, MA 018051801871777
- George Hayao, M.D.Burlington, MA 018051942278445
- Mark Itzkowitz, M.D.Burlington, MA 018051184663270
- Juwen Lin, M.D.Burlington, MA 018051811969249
- Judith Melin, MDBurlington, MA 018051396857009
- Arun Mukherjee, MDBurlington, MA 018051205817806
Common questions
What is Zachary Marnoy, MD's NPI number?
Zachary Marnoy, MD's National Provider Identifier (NPI) is 1194247841, issued on Jul 14, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Zachary Marnoy, MD located?
The NPPES record lists a practice address at 41 Burlington Mall RD, Burlington, MA, 01805. Phone: (781) 744-5100. Providers update this record themselves, so call before visiting.
How can I verify Zachary Marnoy, MD's license?
NPPES lists Massachusetts license number 285295, 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 Zachary Marnoy, MD prescribe under Medicare Part D?
In 2024, Zachary Marnoy, MD had 378 Medicare Part D claims for 197 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Zachary Marnoy, MD's MIPS final score?
The 2023 MIPS final score is 91.4 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.