Della Mathew, MD
NPI 1629028428ActiveIndividual· Internal Medicine· Buffalo Grove, IL
Internal Medicine (MD) with Shalini Katikaneni MD PA and 1 other group, practicing in Buffalo Grove, Illinois. Their prescriptions cost Medicare Part D more than their services did: $729,415 for 11,716 claims, against $97,846 paid for services in 2024. Novo Nordisk Inc was the largest of 16 companies reporting payments in 2025, $1,947 in all, mostly food and beverage. Lists Medical City Dallas Hospital as a hospital affiliation.
Overview
| NPI | 1629028428 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | May 11, 2006 |
| Last updated in NPPES | Jan 28, 2021 |
| Certified by provider | Jan 28, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036-109903 | 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 - Internal Medicine (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 182 |
|---|---|
| Services billed | 1,538 across 40 procedure codes |
| Paid by Medicare | $97,846 |
Part D prescriptions in 2024
| Prescriptions (claims) | 11,716 · 15,179 30-day fills |
|---|---|
| Patients | 330 |
| Total drug cost | $729,415 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 1996 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical groups
- Shalini Katikaneni MD PAGarland, TX · 5 clinicians
- Katikaneni S MD PADallas, TX · 2 clinicians
Hospital affiliation
- Medical City Dallas HospitalDallas, TX
Other facilities
- Divinity HealthcareHospice · Fort Worth, TX
- Traymore Nursing CenterNursing home · Dallas, TX
Industry payments (Open Payments)
- 2025$1,947 · 51 payments from 16 companies
- 2024$277.55 · 14 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $306.01 | 5 |
| Lilly USA, LLC | $298.14 | 8 |
| Astellas Pharma US Inc | $268.07 | 6 |
| Otsuka America Pharmaceutical, Inc. | $251.28 | 8 |
| Astrazeneca Pharmaceuticals LP | $149.61 | 3 |
What the 2025 payments were for
- Food and Beverage$1,862 · 50 payments
- Education$85.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 35 internal medicine physicians in Buffalo Grove · All internal medicine physicians in Illinois