Karen Chang, MD
NPI 1134121189 · Internal Medicine Physician · Colorado Springs, CO
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Chang, MD is a Internal Medicine Physician provider in Colorado Springs, CO (NPI 1134121189).
Provider details
- NPI number
- 1134121189
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- ME0074258 (FL)
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
20 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
1,484 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 | 452 | $69 |
| 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 | 248 | $15 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 239 | $44 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 160 | $106 |
| Hemoglobin A1c Level83036 | 107 | $10 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 80 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 352 | 99 |
| Rosuvastatin Calcium | 284 | 89 |
| Levothyroxine Sodium | 277 | 80 |
| Losartan Potassium | 142 | 37 |
| Amlodipine Besylate | 140 | 42 |
| Omeprazole | 115 | 35 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-10
- Last updated
- 2020-04-20
- Certified
- 2020-04-20
Frequently asked questions
- What is Karen Chang's NPI number?
- Karen Chang's National Provider Identifier (NPI) is 1134121189, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Chang's specialty?
- Karen Chang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Chang located?
- Karen Chang's practice location on file with NPPES is 8890 N Union Blvd, Colorado Springs, CO 80920-7799.
- What is Karen Chang's phone number?
- The practice phone number listed in the NPPES registry for Karen Chang is (719) 572-5005.
- Does Karen Chang accept Medicare?
- Karen Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Chang's NPI active?
- Yes — Karen Chang's NPI (1134121189) is active in the NPPES registry as of the last update on 2020-04-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.