Christopher Chang, MD
NPI 1518251800 · Family Medicine Physician · Austin, TX
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Chang, MD is a Family Medicine Physician provider in Austin, TX (NPI 1518251800).
Provider details
- NPI number
- 1518251800
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- P9315 (TX)
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
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
1,359 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 | 214 | $128 |
| 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 | 172 | $16 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 169 | $10 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 150 | $13 |
| Hemoglobin A1c Level83036 | 107 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 102 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 303 | 92 |
| Lisinopril | 199 | 54 |
| Amlodipine Besylate | 188 | 60 |
| Levothyroxine Sodium | 175 | 53 |
| Alprazolam | 161 | 27 |
| Metformin Hclbrand: Metformin Hcl Er | 137 | 38 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-06-03
- Last updated
- 2026-02-06
- Certified
- 2026-02-06
Frequently asked questions
- What is Christopher Chang's NPI number?
- Christopher Chang's National Provider Identifier (NPI) is 1518251800, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Chang's specialty?
- Christopher Chang is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Chang located?
- Christopher Chang's practice location on file with NPPES is 6835 Austin Center Blvd, Austin, TX 78731-3166.
- What is Christopher Chang's phone number?
- The practice phone number listed in the NPPES registry for Christopher Chang is (512) 346-6611.
- Does Christopher Chang accept Medicare?
- Christopher Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Chang's NPI active?
- Yes — Christopher Chang's NPI (1518251800) is active in the NPPES registry as of the last update on 2026-02-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.