Mark Jonas, M.D.
NPI 1144219957 · Gastroenterology Physician · Cincinnati, OH
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Jonas, M.D. is a Gastroenterology Physician provider in Cincinnati, OH (NPI 1144219957).
Provider details
- NPI number
- 1144219957
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 35074854 (OH)
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
350 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 | 112 | $119 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 102 | $86 |
| Limited Ultrasound Scan of Abdomen76705 | 42 | $78 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 42 | $156 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, 1 Hour Or Less96365 | 34 | $57 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 44 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 317 | 98 |
| Ursodiol | 161 | 32 |
| Famotidine | 110 | 32 |
| Omeprazole | 103 | 31 |
| Prednisone | 95 | 23 |
| Colestipol Hcl | 85 | 23 |
| Lactulose | 77 | 25 |
| Furosemide | 76 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$909 across 70 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
- 2005-10-14
- Last updated
- 2010-06-25
Frequently asked questions
- What is Mark Jonas's NPI number?
- Mark Jonas's National Provider Identifier (NPI) is 1144219957, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Jonas's specialty?
- Mark Jonas is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Jonas located?
- Mark Jonas's practice location on file with NPPES is 2925 Vernon Pl, Cincinnati, OH 45219-2425.
- What is Mark Jonas's phone number?
- The practice phone number listed in the NPPES registry for Mark Jonas is (513) 751-6667.
- Does Mark Jonas accept Medicare?
- Mark Jonas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Jonas's NPI active?
- Yes — Mark Jonas's NPI (1144219957) is active in the NPPES registry as of the last update on 2010-06-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.