Mark Zeller, DO
NPI 1396925186 · Internal Medicine Physician · Riverside, RI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Zeller, DO is a Internal Medicine Physician provider in Riverside, RI (NPI 1396925186).
Provider details
- NPI number
- 1396925186
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- N0575 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
18 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 83 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 252 | 70 |
| Amlodipine Besylate | 203 | 51 |
| Lisinopril | 130 | 34 |
| Semaglutidebrand: Ozempic | 125 | 19 |
| Metformin Hclbrand: Metformin Hcl Er | 108 | 22 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 104 | 27 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$26 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 2 Old County RdBarrington, RI 02806-1600Phone: (401) 246-1195
- 100 Bullocks Point AveRiverside, RI 02915-5351Phone: (401) 437-1008Fax: (401) 433-3042
Registry dates
- Enumerated
- 2007-11-08
- Last updated
- 2026-03-03
- Certified
- 2026-03-03
Frequently asked questions
- What is Mark Zeller's NPI number?
- Mark Zeller's National Provider Identifier (NPI) is 1396925186, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Zeller's specialty?
- Mark Zeller is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Zeller located?
- Mark Zeller's practice location on file with NPPES is 10 Tripps Ln, Riverside, RI 02915-3014.
- What is Mark Zeller's phone number?
- The practice phone number listed in the NPPES registry for Mark Zeller is (401) 654-4098.
- Does Mark Zeller accept Medicare?
- Mark Zeller is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Zeller's NPI active?
- Yes — Mark Zeller's NPI (1396925186) is active in the NPPES registry as of the last update on 2026-03-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.