Gregory Barron, MD
NPI 1871859801 · Rheumatology Physician · Denver, CO
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Barron, MD is a Rheumatology Physician provider in Denver, CO (NPI 1871859801).
Provider details
- NPI number
- 1871859801
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- DR.0055679 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,054 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 593 | $136 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 364 | $132 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 283 | $9 |
| Administration of Chemotherapy Into Vein, Each Additional Hour96415 | 218 | $29 |
| Administration of Non-Hormonal Anti-Neoplastic Chemotherapy Under Skin Or Into Muscle96401 | 189 | $76 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 182 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 191 | 69 |
| Methotrexate Sodiumbrand: Methotrexate | 187 | 50 |
| Hydroxychloroquine Sulfate | 152 | 54 |
| Duloxetine Hcl | 105 | 38 |
| Tramadol Hcl | 98 | 42 |
| Allopurinol | 88 | 23 |
| Celecoxib | 83 | 29 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$243 across 11 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 9695 S Yosemite St Ste 120Lone Tree, CO 80124-3200Phone: (303) 394-2828Fax: (303) 320-0242
Registry dates
- Enumerated
- 2012-04-04
- Last updated
- 2023-09-07
- Certified
- 2023-09-07
Frequently asked questions
- What is Gregory Barron's NPI number?
- Gregory Barron's National Provider Identifier (NPI) is 1871859801, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Barron's specialty?
- Gregory Barron is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Barron located?
- Gregory Barron's practice location on file with NPPES is 7111 E Lowry Blvd Ste 200, Denver, CO 80230-7360.
- What is Gregory Barron's phone number?
- The practice phone number listed in the NPPES registry for Gregory Barron is (303) 394-2828.
- Does Gregory Barron accept Medicare?
- Gregory Barron is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Barron's NPI active?
- Yes — Gregory Barron's NPI (1871859801) is active in the NPPES registry as of the last update on 2023-09-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.