David Joseph Knapp, M.D.
NPI 1376735613ActiveIndividual· Internal Medicine· Sierra Vista, AZ
Internal Medicine (M.D.) in Sierra Vista, Arizona, licensed in AZ, with an NPI issued in August 2007. Their prescriptions cost Medicare Part D more than their services did: $452,640 for 4,597 claims, against $185,098 paid for services in 2024. Lilly USA, LLC was the largest of 2 companies reporting payments in 2025, $60.21 in all, mostly education. Lists Canyon Vista Medical Center and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1376735613 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Aug 10, 2007 |
| Last updated in NPPES | Jun 10, 2020 |
| Certified by provider | Jun 10, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 23368 | AZ |
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 (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 597 |
|---|---|
| Services billed | 2,479 across 18 procedure codes |
| Paid by Medicare | $185,098 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,597 · 11,738 30-day fills |
|---|---|
| Patients | 300 |
| Total drug cost | $452,640 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 1984 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Family Practice |
Hospital affiliations
- Canyon Vista Medical CenterSierra Vista, AZ
- Copper Queen Community HospitalBisbee, AZ
- St Joseph's HospitalTucson, AZ
- Tucson Medical CenterTucson, AZ
Other facilities
- Bayada Home Health Care, IncHome health agency · Sierra Vista, AZ
- Haven Home Health CareHome health agency · Tucson, AZ
Industry payments (Open Payments)
- 2025$60.21 · 2 payments from 2 companies
- 2024$434.70 · 10 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $45.00 | 1 |
| Kowa Pharmaceuticals America, Inc. | $15.21 | 1 |
What the 2025 payments were for
- Education$45.00 · 1 payment
- Food and Beverage$15.21 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 58 internal medicine physicians in Sierra Vista · All internal medicine physicians in Arizona