Charles Nielsen, DO
NPI 1497247837 · Family Medicine Physician · Colorado Springs, CO
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Nielsen, DO is a Family Medicine Physician provider in Colorado Springs, CO (NPI 1497247837).
Provider details
- NPI number
- 1497247837
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
8 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,079 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 408 | $90 |
| 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 | 193 | $16 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 145 | $69 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 139 | $111 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 104 | $73 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 103 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 310 | 88 |
| Atorvastatin Calcium | 229 | 80 |
| Lisinopril | 192 | 64 |
| Amlodipine Besylate | 181 | 54 |
| Losartan Potassium | 145 | 47 |
| Tramadol Hcl | 129 | 44 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-06-01
- Last updated
- 2021-09-13
- Certified
- 2021-09-13
Frequently asked questions
- What is Charles Nielsen's NPI number?
- Charles Nielsen's National Provider Identifier (NPI) is 1497247837, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Nielsen's specialty?
- Charles Nielsen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Nielsen located?
- Charles Nielsen's practice location on file with NPPES is 320 E Fontanero St Ste 100, Colorado Springs, CO 80907-7535.
- What is Charles Nielsen's phone number?
- The practice phone number listed in the NPPES registry for Charles Nielsen is (719) 365-7420.
- Does Charles Nielsen accept Medicare?
- Charles Nielsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Nielsen's NPI active?
- Yes — Charles Nielsen's NPI (1497247837) is active in the NPPES registry as of the last update on 2021-09-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.