Nathaniel Joseph Spezia-Lindner, MD
NPI 1235691148ActiveIndividual· Internal Medicine, Gastroenterology· Bozeman, MT
Internal Medicine, Gastroenterology (MD) with Billings Clinic Specialty Supplies and Services, LLC, practicing in Bozeman, Montana. Part D covered 33 prescriptions written in 2024, 79% of them generic. Conmed Corporation was the largest of 5 companies reporting payments in 2025, $335.82 in all, mostly food and beverage. Lists Billings Clinic Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1235691148 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Apr 1, 2019 |
| Last updated in NPPES | Aug 29, 2025 |
| Certified by provider | Aug 29, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | MED-PHYS-LIC-152342 | MT |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 (MT) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 33 · 77 30-day fills |
|---|---|
| Patients | 14 |
| Total drug cost | $582.67 |
| Generic share | 79% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Billings Clinic Specialty Supplies and Services, LLCBillings, MT · 824 clinicians
Hospital affiliations
- Billings Clinic HospitalBillings, MT
- Bozeman Health Deaconess HospitalBozeman, MT
- Livingston HealthcareLivingston, MT
Industry payments (Open Payments)
- 2025$335.82 · 13 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Conmed Corporation | $107.66 | 2 |
| Janssen Biotech, Inc. | $90.26 | 5 |
| Madrigal Pharmaceuticals | $72.69 | 3 |
| Intercept Pharmaceuticals, Inc. | $37.13 | 2 |
| Abbvie Inc. | $28.08 | 1 |
What the 2025 payments were for
- Food and Beverage$335.82 · 13 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Gastroenterology providers in Bozeman
- 1730381617
- 1336386721
- 1861528457
- 1922072560
- 1003260217
- 1952495756
- 1821182627
- 1649274309
- 1306829536
- 1033203831
- 1043206238
- 1255372736
All Internal Medicine, Gastroenterology providers in Montana →