Zachary Marnoy, MD
NPI 1194247841 · Internal Medicine Physician · Burlington, MA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zachary Marnoy, MD is a Internal Medicine Physician provider in Burlington, MA (NPI 1194247841).
Provider details
- NPI number
- 1194247841
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 285295 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
8 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,073 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 383 | $120 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 366 | $79 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 277 | $116 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 18 | $131 |
| Initial Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99221 | 17 | $83 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 28 | 26 |
| Prednisone | 24 | 20 |
| Furosemide | 21 | 18 |
| Pantoprazole Sodium | 18 | 15 |
| Apixabanbrand: Eliquis | 17 | 15 |
| Atorvastatin Calcium | 16 | 14 |
| Oxycodone Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-07-14
- Last updated
- 2022-07-21
- Certified
- 2020-10-01
Frequently asked questions
- What is Zachary Marnoy's NPI number?
- Zachary Marnoy's National Provider Identifier (NPI) is 1194247841, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zachary Marnoy's specialty?
- Zachary Marnoy is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Zachary Marnoy located?
- Zachary Marnoy's practice location on file with NPPES is 41 Burlington Mall Rd, Burlington, MA 01805-0001.
- What is Zachary Marnoy's phone number?
- The practice phone number listed in the NPPES registry for Zachary Marnoy is (781) 744-5100.
- Does Zachary Marnoy accept Medicare?
- Zachary Marnoy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zachary Marnoy's NPI active?
- Yes — Zachary Marnoy's NPI (1194247841) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.