Maria Corazon Chang, M.D.
NPI 1730281932ActiveIndividual· Internal Medicine, Gastroenterology· Wichita, KS
Internal Medicine, Gastroenterology (M.D.) with Comanche County Healthcare Corporation and 1 other group, practicing in Wichita, Kansas. In 2024 Medicare paid $92,665 for 308 patients, and Part D covered 530 of their prescriptions, 75% of them generic. Abbvie Inc. was the largest of 10 companies reporting payments in 2025, $778.75 in all, mostly food and beverage. Lists Integris Baptist Medical Center, Inc and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1730281932 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 1, 2006 |
| Last updated in NPPES | Sep 30, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 29174 | KS |
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 | 308 |
|---|---|
| Services billed | 2,708 across 36 procedure codes |
| Paid by Medicare | $92,665 |
Part D prescriptions in 2024
| Prescriptions (claims) | 530 · 916 30-day fills |
|---|---|
| Patients | 211 |
| Total drug cost | $110,108 |
| Generic share | 75% of claims |
Education and affiliations
| Graduation year | 1990 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical groups
- Comanche County Healthcare CorporationLawton, OK · 130 clinicians
- Digestive Disease Specialists IncOklahoma City, OK · 18 clinicians
Hospital affiliations
- Integris Baptist Medical Center, IncOklahoma City, OK
- Integris Canadian Valley HospitalYukon, OK
- Integris Southwest Medical CenterOklahoma City, OK
- Memorial HealthLawton, OK
Industry payments (Open Payments)
- 2025$778.75 · 44 payments from 10 companies
- 2024$848.77 · 49 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $379.98 | 26 |
| Takeda Pharmaceuticals U.S.A., Inc. | $122.98 | 5 |
| Pfizer Inc. | $76.11 | 4 |
| Genzyme Corporation | $66.48 | 3 |
| Madrigal Pharmaceuticals | $30.99 | 1 |
What the 2025 payments were for
- Food and Beverage$778.75 · 44 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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