Michael Chun, MD
NPI 1730267428 · Internal Medicine Physician · Roseville, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Chun, MD is a Internal Medicine Physician provider in Roseville, CA (NPI 1730267428).
Provider details
- NPI number
- 1730267428
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G68978 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 33 | 23 |
| Losartan Potassium | 32 | 22 |
| Atenolol | 27 | 16 |
| Metoprolol Tartrate | 20 | 16 |
| Lisinopril | 19 | 14 |
| Fluticasone Propionate | 14 | 12 |
| Levothyroxine Sodium | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2021-12-13
Frequently asked questions
- What is Michael Chun's NPI number?
- Michael Chun's National Provider Identifier (NPI) is 1730267428, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Chun's specialty?
- Michael Chun is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Chun located?
- Michael Chun's practice location on file with NPPES is 1600 Eureka Rd, Roseville, CA 95661-3027.
- What is Michael Chun's phone number?
- The practice phone number listed in the NPPES registry for Michael Chun is (916) 784-4000.
- Does Michael Chun accept Medicare?
- Michael Chun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Chun's NPI active?
- Yes — Michael Chun's NPI (1730267428) is active in the NPPES registry as of the last update on 2021-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.