Dennis Onentia Oyieng'O, M.D.
NPI 1629207766ActiveIndividual· Internal Medicine, Pulmonary Disease· Wichita, KS
Internal Medicine, Pulmonary Disease (M.D.) with Ascension Medical Group Via Christi PA and 1 other group, practicing in Wichita, Kansas. Their prescriptions cost Medicare Part D more than their services did: $559,473 for 1,495 claims, against $209,591 paid for services in 2024. Intuitive Surgical, Inc. was the largest of 2 companies reporting payments in 2025, $7,067 in all, mostly education. Lists Ascension Via Christi Hospitals Wichita, Inc. and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1629207766 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jul 10, 2009 |
| Last updated in NPPES | Jan 4, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 0437614 | KS |
| Internal Medicine | 207R00000X | 0437614 | KS |
| Internal Medicine, Critical Care Medicine | 207RC0200X | 0437614 | 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 - Pulmonary Disease (KS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 532 |
|---|---|
| Services billed | 4,452 across 68 procedure codes |
| Paid by Medicare | $209,591 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,495 · 1,904 30-day fills |
|---|---|
| Patients | 225 |
| Total drug cost | $559,473 |
| Generic share | 38% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Internal Medicine |
Medical groups
- Ascension Medical Group Via Christi PAWichita, KS · 186 clinicians
- Ascension Via Christi Hospitals Wichita IncWichita, KS · 121 clinicians
Hospital affiliations
- Ascension Via Christi Hospitals Wichita, Inc.Wichita, KS
- Via Christi Hospital Wichita St Teresa, IncWichita, KS
- Wesley Medical CenterWichita, KS
Other facilities
- Select Specialty Hospital WichitaLong-term care hospital · Wichita, KS
Industry payments (Open Payments)
- 2025$7,067 · 9 payments from 2 companies
- 2024$377.17 · 6 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Intuitive Surgical, Inc. | $6,961 | 8 |
| United Therapeutics Corporation | $106.10 | 1 |
What the 2025 payments were for
- Education$5,500 · 3 payments
- Travel and Lodging$1,323 · 3 payments
- Food and Beverage$244.33 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 26 pulmonologists in Wichita · All pulmonologists in Kansas