Jason Kolfenbach, MD
NPI 1487791752 · Rheumatology Physician · Aurora, CO
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jason Kolfenbach, MD is a Rheumatology Physician provider in Aurora, CO (NPI 1487791752).
Provider details
- NPI number
- 1487791752
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 45847 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
273 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 110 | $142 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 92 | $96 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 44 | $16 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 16 | $171 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 11 | $179 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methotrexate Sodiumbrand: Methotrexate | 87 | 33 |
| Hydroxychloroquine Sulfate | 83 | 32 |
| Prednisone | 67 | 30 |
| Adalimumabbrand: Humira(cf) Pen | 47 | — |
| Alendronate Sodium | 33 | 13 |
| Azathioprine | 25 | — |
| Tocilizumabbrand: Actemra Actpen |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-30
- Last updated
- 2012-11-26
Frequently asked questions
- What is Jason Kolfenbach's NPI number?
- Jason Kolfenbach's National Provider Identifier (NPI) is 1487791752, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jason Kolfenbach's specialty?
- Jason Kolfenbach is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Jason Kolfenbach located?
- Jason Kolfenbach's practice location on file with NPPES is 12605 E 16th Ave, Aurora, CO 80045-2545.
- What is Jason Kolfenbach's phone number?
- The practice phone number listed in the NPPES registry for Jason Kolfenbach is (720) 848-0000.
- Does Jason Kolfenbach accept Medicare?
- Jason Kolfenbach is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jason Kolfenbach's NPI active?
- Yes — Jason Kolfenbach's NPI (1487791752) is active in the NPPES registry as of the last update on 2012-11-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.