Gregory David Middleton, MD
NPI 1104891290ActiveIndividual· Internal Medicine, Rheumatology· La Jolla, CA
Internal Medicine, Rheumatology (MD) in La Jolla, California, trained at Boston University School of Medicine (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $816,595 for 988 claims, against $113,814 paid for services in 2024.
Overview
| NPI | 1104891290 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 22, 2006 |
| Last updated in NPPES | Mar 28, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | C54037 | CA |
| Internal Medicine, Rheumatology | 207RR0500X | 9639 | NV |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Rheumatology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,005 |
|---|---|
| Services billed | 2,567 across 20 procedure codes |
| Paid by Medicare | $113,814 |
Part D prescriptions in 2024
| Prescriptions (claims) | 988 · 1,704 30-day fills |
|---|---|
| Patients | 138 |
| Total drug cost | $816,595 |
| Generic share | 80% of claims |
Education and affiliations
| Medical school | Boston University School of Medicine |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Rheumatology |
| Secondary specialties | Orthopedic Surgery |
| Telehealth | Offers telehealth |
Medical group
- Regents of the University of CaliforniaSan Diego, CA · 2,089 clinicians
Hospital affiliation
- Uc San Diego Health Hillcrest - Hillcrest Med CtrSan Diego, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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