Mark T. Lin, MD
NPI 1366594749ActiveIndividual· Internal Medicine, Gastroenterology· Tucson, AZ
Internal Medicine, Gastroenterology (MD) in Tucson, Arizona, trained at Rush Medical College of Rush University (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $1,765,847 for 1,550 claims, against $172,417 paid for services in 2024. Abbvie Inc. was the largest of 16 companies reporting payments in 2025, $1,084 in all, mostly food and beverage.
Overview
| NPI | 1366594749 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jan 17, 2007 |
| Last updated in NPPES | Aug 19, 2025 |
| Certified by provider | Aug 19, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 42987 | AZ |
| Internal Medicine, Gastroenterology | 207RG0100X | 2008024820 | MO |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 897 |
|---|---|
| Services billed | 1,615 across 42 procedure codes |
| Paid by Medicare | $172,417 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,550 · 2,614 30-day fills |
|---|---|
| Patients | 674 |
| Total drug cost | $1,765,847 |
| Generic share | 66% of claims |
Education and affiliations
| Medical school | Rush Medical College of Rush University |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Gastroenterology |
Medical groups
- Tmc Medical NetworkTucson, AZ · 281 clinicians
- TmconeGreen Valley, AZ · 96 clinicians
Hospital affiliations
- Oro Valley HospitalOro Valley, AZ
- Tucson Medical CenterTucson, AZ
Industry payments (Open Payments)
- 2025$1,084 · 45 payments from 16 companies
- 2024$486.86 · 28 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $339.62 | 12 |
| Takeda Pharmaceuticals U.S.A., Inc. | $234.39 | 7 |
| Janssen Biotech, Inc. | $140.66 | 8 |
| Pfizer Inc. | $97.09 | 4 |
| Amgen Inc. | $47.51 | 2 |
What the 2025 payments were for
- Food and Beverage$1,071 · 44 payments
- Education$12.84 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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