California
Why These Physicians Were Excluded
Federal exclusion types for physicians in California who still have active provider records.
| Reason for Exclusion | Count |
|---|---|
| License Revoked/Suspended 1128b4 | 231 |
| Program-Related Crime 1128a1 | 64 |
| Felony Controlled Substance 1128a4 | 43 |
| Felony Healthcare Fraud 1128a3 | 36 |
| Patient Abuse/Neglect 1128a2 | 26 |
| 1128b14 1128b14 | 11 |
| Misdemeanor Fraud 1128b1 | 5 |
| Fraud/Kickbacks 1128b7 | 3 |
| Federal/State Program Exclusion 1128b5 | 2 |
| 1128b3 1128b3 | 2 |
| 1128b6 1128b6 | 1 |
| 1128Aa 1128Aa | 1 |
Excluded Physicians Who Moved
After being excluded, some physicians move to a different state. The new state's medical board may not be aware of the federal exclusion.
Moved to California
| From | Count |
|---|---|
| Nevada | 6 |
| Colorado | 5 |
| Oregon | 4 |
| Arizona | 4 |
| Washington | 3 |
| Texas | 3 |
| Minnesota | 2 |
| Pennsylvania | 1 |
| Tennessee | 1 |
| Virginia | 1 |
Left California
| To | Count |
|---|---|
| Nevada | 9 |
| Washington | 3 |
| Florida | 3 |
| Maryland | 2 |
| New York | 2 |
| Texas | 1 |
| Massachusetts | 1 |
| Minnesota | 1 |
| West Virginia | 1 |
| Pennsylvania | 1 |
Highest-Priority Cases
Inclusion on this list reflects a federal exclusion record and an active NPI registry entry — it does not confirm the physician is currently seeing patients. NPIs may remain active for billing, research, teaching, or administrative purposes. Full methodology
These physicians have the most concerning combination of serious offense, recent registry activity, and cross-state movement.
| Physician | Reason for Exclusion | Exclusion Date | Specialty |
|---|---|---|---|
| HAMPTON, WILLIAM W | Felony Healthcare Fraud | 2012-10-18 | SURGERY |
| VILLARROEL, MICHAEL LOUIS | Felony Healthcare Fraud | 2024-08-20 | INTERNAL MEDICINE |
| KARIMI, PARTO nan | Felony Controlled Substance | 2024-11-20 | SURGERY |
| MALIKIAN, RAPHAEL T | Felony Controlled Substance | 2024-06-20 | FAMILY PRACTICE |
| OMIDI, JULIAN C | Felony Healthcare Fraud | 2024-04-18 | DERMATOLOGY |
| PAYNE, DAVID nan | Felony Healthcare Fraud | 2024-05-20 | ORTHOPEDICS |
| ARONOWITZ, JOEL ALAN | Fraud/Kickbacks | 2023-04-14 | PLASTIC SURGERY |
| CAPEN, DANIEL A | Felony Healthcare Fraud | 2020-07-20 | ORTHOPEDICS |
| BERKOWITZ, ARNOLD nan | Felony Controlled Substance | 2017-07-20 | ONCOLOGY |
| BRYAN, WASHINGTON nan | Felony Controlled Substance | 2018-01-18 | PAIN MANAGEMENT |
Pharmaceutical Payments to Excluded Physicians
Drug and medical device companies made these payments to excluded physicians in California between 2018 and 2024.
| Physician | Total | Payments | Companies |
|---|---|---|---|
| SWANSON, CRAIG ANDREW | $200,698 | 35 | 3 |
| LOEB, CHARLES ANDREW | $52,794 | 59 | 10 |
| TEPPER, GIL nan | $37,580 | 6 | 4 |
| ROSENTHAL, DAVID N | $35,747 | 60 | 8 |
| BIJANPOUR, KAMAL nan | $23,492 | 37 | 8 |
| STALEY, JENNINGS RYAN | $17,168 | 19 | 4 |
| SIAO, DONALD nan | $16,485 | 900 | 62 |
| THOMPSON, WILLIAM MOORE | $12,481 | 635 | 40 |
| POSADA, JUAN ESTEBAN | $11,045 | 536 | 48 |
| BARRIENTOS, DOMINGO CHUA | $10,302 | 684 | 46 |
Every physician named on this page appears in an official government record — the HHS Office of Inspector General's List of Excluded Individuals/Entities (LEIE) or a state medical-board action — and is shown here as published by that agency. The basis for each exclusion is stated in the official record: some exclusions follow criminal convictions, others are administrative. Inclusion on this page asserts nothing beyond what the official record states, and an active provider registry entry does not confirm that a physician is currently seeing patients.
Different people can share the same name. Before drawing any conclusion about a specific individual, verify identity against the NPI number and the primary record at exclusions.oig.hhs.gov. If you believe a record shown here is inaccurate, outdated, or refers to a different person, email editor@thepublicledgers.org and we will review and correct it.
- An active registry record does not confirm they are currently practicing.
- Check your state medical board for their current license status.
- Report concerns to the OIG Hotline: 1-800-HHS-TIPS.