Jon Nielsen, MD, MPH
NPI 1851684120 · Diagnostic Radiology Physician · Englewood, CO
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jon Nielsen, MD, MPH is a Diagnostic Radiology Physician provider in Englewood, CO (NPI 1851684120).
Provider details
- NPI number
- 1851684120
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MPH
- Sex
- Male
- Sole proprietor
- No
- License
- DR55006 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 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
1,985 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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 779 | $8 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 235 | $86 |
| Ct Scan of Blood Vessels of Chest With Contrast71275 | 147 | $85 |
| Ct Scan of Abdomen and Pelvis Without Contrast74176 | 102 | $83 |
| Ct Scan of Chest With Contrast71260 | 89 | $53 |
| X-Ray of Abdomen, 1 View74018 | 71 | $9 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-05-19
- Last updated
- 2023-12-27
- Certified
- 2023-12-27
Frequently asked questions
- What is Jon Nielsen's NPI number?
- Jon Nielsen's National Provider Identifier (NPI) is 1851684120, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jon Nielsen's specialty?
- Jon Nielsen is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Jon Nielsen located?
- Jon Nielsen's practice location on file with NPPES is 10800 E Geddes Ave Ste 300, Englewood, CO 80112-3895.
- What is Jon Nielsen's phone number?
- The practice phone number listed in the NPPES registry for Jon Nielsen is (303) 761-9190.
- Does Jon Nielsen accept Medicare?
- Jon Nielsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jon Nielsen's NPI active?
- Yes — Jon Nielsen's NPI (1851684120) is active in the NPPES registry as of the last update on 2023-12-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.