Mark Riner, M.D.
NPI 1275521221 · Gastroenterology Physician · Daytona Beach, FL
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Riner, M.D. is a Gastroenterology Physician provider in Daytona Beach, FL (NPI 1275521221).
Provider details
- NPI number
- 1275521221
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- ME 50466 (FL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,107 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 337 | $125 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 159 | $60 |
| Insertion of Guide Wire With Dilation of Esophagus Using a Flexible Endoscope43248 | 149 | $142 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 138 | $130 |
| Destruction of Polyp Or Growth of Large Bowel Using a Flexible Endoscope45388 | 115 | $266 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 317 | 124 |
| Pantoprazole Sodium | 177 | 66 |
| Famotidine | 128 | 60 |
| Esomeprazole Magnesium | 65 | 26 |
| Dexlansoprazolebrand: Dexlansoprazole Dr | 51 | — |
| Lipase/Protease/Amylasebrand: Creon | 46 | 17 |
| Linaclotidebrand: Linzess | 46 | 12 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$566 across 29 records (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
Registry dates
- Enumerated
- 2005-10-12
- Last updated
- 2016-12-30
Frequently asked questions
- What is Mark Riner's NPI number?
- Mark Riner's National Provider Identifier (NPI) is 1275521221, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Riner's specialty?
- Mark Riner is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Riner located?
- Mark Riner's practice location on file with NPPES is 1893 N Clyde Morris Blvd, Daytona Beach, FL 32117-5535.
- What is Mark Riner's phone number?
- The practice phone number listed in the NPPES registry for Mark Riner is (386) 677-0531.
- Does Mark Riner accept Medicare?
- Mark Riner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Riner's NPI active?
- Yes — Mark Riner's NPI (1275521221) is active in the NPPES registry as of the last update on 2016-12-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.