Gretchen Denise Shull, M.D.
NPI 1689621336ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Joplin, MO
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) in Joplin, Missouri, trained at University of Missouri, Columbia School of Medicine (class of 2003). Their prescriptions cost Medicare Part D more than their services did: $1,286,190 for 3,960 claims, against $300,057 paid for services in 2024. Novo Nordisk Inc was the largest of 19 companies reporting payments in 2025, $1,650 in all, mostly food and beverage.
Overview
| NPI | 1689621336 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 28, 2006 |
| Last updated in NPPES | Mar 21, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 2009008010 | MO |
| Internal Medicine | 207R00000X | 31728 | KS |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Endocrinology (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 682 |
|---|---|
| Services billed | 21,671 across 20 procedure codes |
| Paid by Medicare | $300,057 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,960 · 7,841 30-day fills |
|---|---|
| Patients | 605 |
| Total drug cost | $1,286,190 |
| Generic share | 41% of claims |
Education and affiliations
| Medical school | University of Missouri, Columbia School of Medicine |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical group
- Mercy Clinic Joplin LLCJoplin, MO · 295 clinicians
Hospital affiliations
- Freeman Health System - Freeman WestJoplin, MO
- Mercy Hospital CarthageCarthage, MO
- Mercy Hospital ColumbusColumbus, KS
- Mercy Hospital JoplinJoplin, MO
- Mercy Hospital Pittsburg, IncPittsburg, KS
Industry payments (Open Payments)
- 2025$1,650 · 98 payments from 19 companies
- 2024$573.11 · 33 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $401.67 | 22 |
| Dexcom, Inc. | $265.30 | 22 |
| Abbott Laboratories | $189.71 | 10 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $109.95 | 7 |
| Sanofi-Aventis U.S. LLC | $90.41 | 5 |
What the 2025 payments were for
- Food and Beverage$1,650 · 98 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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