Dennis D. Yap, M.D.
NPI 1508967597ActiveIndividual· Family Medicine· Springfield, IL
Family Medicine (M.D.) with Pana Community Hospital Association, practicing in Springfield, Illinois. Their prescriptions cost Medicare Part D more than their services did: $555,515 for 6,276 claims, against $22,689 paid for services in 2024. E.R. Squibb & Sons, L.L.C. was the largest of 8 companies reporting payments in 2025, $201.68 in all, mostly food and beverage. Lists Memorial Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1508967597 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Sep 25, 2006 |
| Last updated in NPPES | Feb 22, 2021 |
| Certified by provider | Feb 22, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 036-087319 | IL |
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 - Family Practice (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 111 |
|---|---|
| Services billed | 257 across 12 procedure codes |
| Paid by Medicare | $22,689 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,276 · 13,296 30-day fills |
|---|---|
| Patients | 529 |
| Total drug cost | $555,515 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 1987 |
|---|---|
| Medicare specialty | Family Practice |
Medical group
- Pana Community Hospital AssociationPana, IL · 56 clinicians
Hospital affiliations
- Memorial Medical CenterSpringfield, IL
- Pana Community HospitalPana, IL
- St Johns HospitalSpringfield, IL
Other facilities
- Residential Hospice of Southern IllinoisHospice · Marion, IL
Industry payments (Open Payments)
- 2025$201.68 · 11 payments from 8 companies
- 2024$267.41 · 15 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| E.R. Squibb & Sons, L.L.C. | $51.98 | 2 |
| Pfizer Inc. | $33.95 | 2 |
| Phathom Pharmaceuticals, Inc. | $31.33 | 2 |
| Abbvie Inc. | $18.74 | 1 |
| Astrazeneca Pharmaceuticals LP | $18.59 | 1 |
What the 2025 payments were for
- Food and Beverage$201.68 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 173 family medicine physicians in Springfield · All family medicine physicians in Illinois