David A. Neumann II, MD
NPI 1043339575ActiveIndividual· Internal Medicine, Gastroenterology· Oklahoma City, OK
Internal Medicine, Gastroenterology (MD) with Digestive Disease Specialists Inc and 1 other group, practicing in Oklahoma City, Oklahoma. Their prescriptions cost Medicare Part D more than their services did: $2,055,971 for 3,535 claims, against $828,645 paid for services in 2024. Abbvie Inc. was the largest of 17 companies reporting payments in 2025, $2,042 in all, mostly food and beverage. Lists Integris Baptist Medical Center, Inc and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1043339575 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 28, 2007 |
| Last updated in NPPES | Aug 7, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 28977 | OK |
| Internal Medicine | 207R00000X | 28977 | OK |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 673 |
|---|---|
| Services billed | 42,278 across 54 procedure codes |
| Paid by Medicare | $828,645 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,535 · 6,138 30-day fills |
|---|---|
| Patients | 844 |
| Total drug cost | $2,055,971 |
| Generic share | 79% of claims |
Education and affiliations
| Graduation year | 2006 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Digestive Disease Specialists IncOklahoma City, OK · 18 clinicians
- Integris Bass Baptist Health CenterEnid, OK · 9 clinicians
Hospital affiliations
- Integris Baptist Medical Center, IncOklahoma City, OK
- Integris Canadian Valley HospitalYukon, OK
- Integris Health Enid HospitalEnid, OK
- Integris Southwest Medical CenterOklahoma City, OK
- Oklahoma Heart Hospital, LLCOklahoma City, OK
Industry payments (Open Payments)
- 2025$2,042 · 114 payments from 17 companies
- 2024$1,437 · 87 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $692.93 | 49 |
| Takeda Pharmaceuticals U.S.A., Inc. | $435.38 | 23 |
| Lilly USA, LLC | $178.65 | 8 |
| Ipsen Biopharmaceuticals, Inc | $105.41 | 6 |
| Gilead Sciences, Inc. | $82.27 | 5 |
What the 2025 payments were for
- Food and Beverage$2,042 · 114 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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