James Lester Neifing, MD
NPI 1437207941ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Portland, OR
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) with Portland Diabetes and Endocrinology, practicing in Portland, Oregon. Their prescriptions cost Medicare Part D more than their services did: $3,769,698 for 7,231 claims, against $252,977 paid for services in 2024. Novo Nordisk Inc was the largest of 23 companies reporting payments in 2025, $48,070 in all, mostly speaking and faculty fees. Lists Legacy Good Samaritan Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1437207941 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jan 8, 2007 |
| Last updated in NPPES | Mar 7, 2023 |
| Certified by provider | Mar 16, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | MD15260 | OR |
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 - Endocrinology (OR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 443 |
|---|---|
| Services billed | 10,253 across 44 procedure codes |
| Paid by Medicare | $252,977 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,231 · 19,149 30-day fills |
|---|---|
| Patients | 745 |
| Total drug cost | $3,769,698 |
| Generic share | 51% of claims |
Education and affiliations
| Graduation year | 1986 |
|---|---|
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical group
- Portland Diabetes and EndocrinologyPortland, OR · 10 clinicians
Hospital affiliations
- Legacy Good Samaritan Medical CenterPortland, OR
- Legacy Meridian Park Medical CenterTualatin, OR
- Ohsu Hospital and ClinicsPortland, OR
- Providence Newberg Medical CenterNewberg, OR
- Providence St Vincent Medical CenterPortland, OR
Industry payments (Open Payments)
- 2025$48,070 · 197 payments from 23 companies
- 2024$21,693 · 157 payments from 25 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $24,989 | 38 |
| Tandem Diabetes Care, Inc. | $9,459 | 12 |
| Lilly USA, LLC | $6,292 | 21 |
| Sanofi-Aventis U.S. LLC | $2,706 | 6 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $2,039 | 7 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$41,280 · 28 payments
- Food and Beverage$4,657 · 152 payments
- Travel and Lodging$2,095 · 12 payments
- Education$38.50 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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