Gregory Katz, MD
NPI 1184674178ActiveIndividual· Internal Medicine· Newport Beach, CA
Internal Medicine (MD) in Newport Beach, California, trained at Albert Einstein College of Medicine of Yeshiva University (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $1,411,199 for 12,288 claims, against $125,572 paid for services in 2024. Lilly USA, LLC was the largest of 23 companies reporting payments in 2025, $1,945 in all, mostly food and beverage.
Overview
| NPI | 1184674178 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 11, 2006 |
| Last updated in NPPES | May 26, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | G76136 | CA |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 551 |
|---|---|
| Services billed | 1,658 across 28 procedure codes |
| Paid by Medicare | $125,572 |
Part D prescriptions in 2024
| Prescriptions (claims) | 12,288 · 27,956 30-day fills |
|---|---|
| Patients | 901 |
| Total drug cost | $1,411,199 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Albert Einstein College of Medicine of Yeshiva University |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Newport Medicine Group IncNewport Beach, CA · 2 clinicians
Hospital affiliation
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
Other facilities
- Hoag Home HealthHome health agency · Newport Beach, CA
- Hoag Hospice, LLCHospice · Newport Beach, CA
Industry payments (Open Payments)
- 2025$1,945 · 79 payments from 23 companies
- 2024$1,888 · 85 payments from 22 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $308.78 | 14 |
| Astrazeneca Pharmaceuticals LP | $247.04 | 11 |
| Abbvie Inc. | $201.98 | 8 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $148.34 | 6 |
| New World Medical,inc. | $147.43 | 1 |
What the 2025 payments were for
- Food and Beverage$1,945 · 79 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 138 internal medicine physicians in Newport Beach · All internal medicine physicians in California