Colorado
Why These Physicians Were Excluded
Federal exclusion types for physicians in Colorado who still have active provider records.
| Reason for Exclusion | Count |
|---|---|
| License Revoked/Suspended 1128b4 | 25 |
| Felony Controlled Substance 1128a4 | 7 |
| Program-Related Crime 1128a1 | 4 |
| Patient Abuse/Neglect 1128a2 | 3 |
| Felony Healthcare Fraud 1128a3 | 2 |
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 Colorado
| From | Count |
|---|---|
| Texas | 3 |
| Pennsylvania | 1 |
| Florida | 1 |
| New Mexico | 1 |
| Massachusetts | 1 |
Left Colorado
| To | Count |
|---|---|
| California | 5 |
| Utah | 1 |
| Florida | 1 |
| Indiana | 1 |
| New Mexico | 1 |
| Idaho | 1 |
| West Virginia | 1 |
| Oklahoma | 1 |
| Tennessee | 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 |
|---|---|---|---|
| JOSEPH, FRANCIS F | Program-Related Crime | 2024-05-20 | FAMILY PRACTICE |
| NEISLER, JUSTIN BOWEN | Patient Abuse/Neglect | 2021-06-17 | FAMILY PRACTICE |
| LITTLEFORD, JOHN ALAN | Felony Controlled Substance | 2019-09-19 | PAIN MANAGEMENT |
| MONTANTE, JOSEPH ROBERT | Felony Healthcare Fraud | 2015-02-19 | FAMILY PRACTICE |
| HO, ANDREW MARK | Felony Controlled Substance | 2021-04-20 | GENERAL PRACTICE |
| PEPER, ERIC ANTHONY | Program-Related Crime | 2017-07-20 | FAMILY PRACTICE |
| TUCKER, KELLY WADE | Felony Controlled Substance | 2010-03-18 | FAMILY PRACTICE |
| WEISS, HOWARD S | Felony Controlled Substance | 2024-03-20 | PSYCHIATRY |
| DATKHAEVA, TATYANA I | Program-Related Crime | 2013-12-19 | FAMILY PRACTICE |
| GESSNER, WIESLAW PAWEL | License Revoked/Suspended | 2023-11-20 | GENERAL PRACTICE |
Pharmaceutical Payments to Excluded Physicians
Drug and medical device companies made these payments to excluded physicians in Colorado between 2018 and 2024.
| Physician | Total | Payments | Companies |
|---|---|---|---|
| MATTHEWS, STEPHEN | $3,383 | 104 | 29 |
| GALLAGHER, MICHAEL D | $1,871 | 32 | 7 |
| TYLER, JOHN MASON | $485 | 33 | 12 |
| WEISS, HOWARD S | $460 | 6 | 5 |
| GESSNER, WIESLAW PAWEL | $419 | 5 | 5 |
| MOFFAT, ROBERT J | $195 | 2 | 1 |
| KESTEN, JEFFREY | $185 | 15 | 7 |
| WU, JOHN VAN | $158 | 5 | 2 |
| HO, ANDREW MARK | $154 | 3 | 3 |
| COOPER, WILLIAM H | $138 | 2 | 2 |
If you found your doctor on this page
- 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.