Jason Chang, M.D.
NPI 1992787485 · Internal Medicine Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jason Chang, M.D. is a Internal Medicine Physician provider in Sacramento, CA (NPI 1992787485).
Provider details
- NPI number
- 1992787485
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G76167 (CA)
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
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
1,034 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 | 417 | $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 | 217 | $17 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 97 | $104 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 84 | $73 |
| Administration of Influenza Virus VaccineG0008 | 51 | $34 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 118 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 441 | 121 |
| Levothyroxine Sodium | 238 | 58 |
| Amlodipine Besylate | 235 | 58 |
| Gabapentin | 161 | 42 |
| Tamsulosin Hcl | 146 | 38 |
| Rosuvastatin Calcium | 135 | 44 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-18
- Last updated
- 2007-11-19
Frequently asked questions
- What is Jason Chang's NPI number?
- Jason Chang's National Provider Identifier (NPI) is 1992787485, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jason Chang's specialty?
- Jason Chang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jason Chang located?
- Jason Chang's practice location on file with NPPES is 2825 J St Ste 300, Sacramento, CA 95816-4300.
- What is Jason Chang's phone number?
- The practice phone number listed in the NPPES registry for Jason Chang is (916) 734-7777.
- Does Jason Chang accept Medicare?
- Jason Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jason Chang's NPI active?
- Yes — Jason Chang's NPI (1992787485) is active in the NPPES registry as of the last update on 2007-11-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.