Dr. Gregory Barron, MD
Rheumatology (Rheumatology Physician)
- Medicare participating
At a glance
- Medical school
- University of Texas Medical Branch at Galveston (2012)
- Years since graduation
- 14
- In the NPI registry since
- 2012
- Medicare patients seen, 2024
- 512
Licensed in Colorado since 2015, according to the Colorado Department of Regulatory Agencies. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is
Education and training
- 2012Medical school: University of Texas Medical Branch at Galveston
- 2012Registered with an NPI (national billing number; not a license date)
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Rheumatology Physician primary
CO license DR.0055679 (first issued 2015; active)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Adventhealth PArker Parker, CO
- Denver Health & Hospital Authority Denver, CO
- The Medical Center of Aurora & South Hospital Aurora, CO
- Adventhealth Castle Rock Castle Rock, CO
- Valley View Hospital Association Glenwood Springs, CO
Medical groups
- Denver Health and Hospital Authority (849 clinicians)
- Denver Arthritis Clinic PC (13 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 512
- Services billed
- 117,718
- Patients’ average age
- 74
| Service | Times | Patients |
|---|---|---|
| Injection, tocilizumab, 1 mg | 54,720 | 33 |
| Injection, golimumab, 1 mg, for intravenous use | 14,100 | 43 |
| Injection, romosozumab-aqqg, 1 mg | 12,600 | 35 |
| Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) | 10,450 | 63 |
| Injection, denosumab, 1 mg | 7,020 | 101 |
| Injection, infliximab, excludes biosimilar, 10 mg | 4,400 | 48 |
| Injection, infliximab-abda, biosimilar, (renflexis), 10 mg | 2,430 | 24 |
| Injection, rituximab, 10 mg | 1,600 | 11 |
| Administration of chemotherapy into vein, 1 hour or less | 507 | 227 |
| Infusion, normal saline solution, 250 cc | 382 | 180 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Prednisone Other prescribers in Denver, CO | 191 |
| Methotrexate (methotrexate sodium) Other prescribers in Denver, CO | 187 |
| Hydroxychloroquine Sulfate Other prescribers in Denver, CO | 152 |
| Duloxetine Hcl Other prescribers in Denver, CO | 105 |
| Tramadol Hcl Other prescribers in Denver, CO | 98 |
| Allopurinol Other prescribers in Denver, CO | 88 |
| Celecoxib Other prescribers in Denver, CO | 83 |
| Meloxicam Other prescribers in Denver, CO | 72 |
| Alendronate Sodium Other prescribers in Denver, CO | 51 |
| Enbrel Sureclick (etanercept) Other prescribers in Denver, CO | 48 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 7 companies reported 27 payments worth $512 in total to this clinician.
| Novartis Pharmaceuticals Corporation | $216 |
|---|---|
| GlaxoSmithKline, LLC. | $94.26 |
| Amgen Inc. | $90.82 |
| Actelion Pharmaceuticals US, Inc. | $32.43 |
| E.r. Squibb & Sons, L.l.c. | $32.23 |
| Ani Pharmaceuticals, Inc. | $29.47 |
| Organon LLC | $16.53 |
| Food and Beverage | $512 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.