Dr. Michael L. Chun, MD
- Medicare services, 2022
- 17
- Part D claims, 2024
- 424
- Hospital affiliations
- 1
- Industry payments
- $167
- Medical group
- 1
- Practice address
- 1600 Eureka Road, Roseville, CA 95661
- Practice phone
- Call (916) 784-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chun's professional email, personal email and mobile number
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Dr. Michael L. Chun is an internist in Sacramento, California
Dr. Chun practices at Roseville Medical Center in Roseville, California, part of Kaiser Permanente.
Dr. Chun's NPI, 1730267428, was assigned on November 1, 2006. Dr. Chun graduated from University of California, Davis School of Medicine in 1989. Dr. Chun holds California license G68978.
- NPI
- 1730267428NPI Registry (opens in a new tab)
- NPI enumeration date
- November 1, 2006
- NPI status
- Active
- Practice phone
- (916) 784-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael L. Chun practices in Roseville and Sacramento
Dr. Chun's primary practice is Roseville Medical Center, at 1600 Eureka Road, Roseville, CA 95661 in Placer County. The practice phone is (916) 784-4000. The NPI Registry lists Dr. Chun's practice address as 2025 Morse Ave, Sacramento, CA 95825.
- Roseville Medical CenterPrimary1600 Eureka Road, Roseville, CA 95661 · Placer CountyPhone(916) 784-4000
- NPI Registry address2025 Morse Ave, Sacramento, CA 95825 · Sacramento CountyPhone(916) 784-4000
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Michael L. Chun is affiliated with 1 site of care and 1 medical group
Dr. Chun's primary practice is Roseville Medical Center in Roseville, California, part of Kaiser Permanente. The medical group on file is The Permanente Medical Group, Inc.
Sources: Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Michael L. Chun's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chun practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Roseville Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael L. Chun is one of 16,751 internists in California
Internal medicine is Dr. Chun's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chun is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Chun
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Michael L. Chun billed Medicare for 17 services in 2022
CMS data shows 17 Medicare services from Dr. Chun across 1 procedure code in 2022, all of them office visits. Medicare paid $747 for them. Every service was in an office.
Dr. Chun's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 132022: 1731%
Dr. Chun compared with the California median for internists, 2022
- Dr. Chun
- California median
- Medicare services
- 17vs 36195% below
- Part D claims
- 216vs 42149% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Chun's most billed Medicare procedure codes, 2022
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chun and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael L. Chun's patients have a median age of 61
Across all payers, Dmand AI patient panel data puts Dr. Chun's median patient age at 61, with 50% women.
Dr. Chun's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Michael L. Chun wrote 424 Medicare Part D claims in 2024
In 2024, Dr. Chun wrote 424 Medicare Part D claims for 223 patients. 90% of them were for generic drugs. CMS names the drug for 216 of them, across 12 drugs with 11 or more claims each, at $3,525 in total drug cost. In 2023, CMS named 4,130 claims across 80 drugs.
Dr. Chun's Part D claims by kind of drug, 2024
- Generic381 claims90%
- Brand-name and other43 claims10%
Dr. Chun's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4,1302024: 21695%
Drugs named by CMS: 12 in 2024, 80 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Michael L. Chun received $167 in industry payments in 2022
CMS Open Payments shows 1 general payment to Dr. Chun from 1 drug or device company in 2022. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $167.
Companies that paid Dr. Chun the most, 2022 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael L. Chun graduated from University of California, Davis School of Medicine
Dr. Chun graduated from University of California, Davis School of Medicine in 1989.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael L. Chun's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Michael L. Chun
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Michael L. Chun's NPI number?
Dr. Michael L. Chun's NPI number is 1730267428. It was assigned on November 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael L. Chun?
Dr. Michael L. Chun is an internist in Sacramento, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Michael L. Chun practice?
Dr. Chun practices at 1600 Eureka Road, Roseville, CA 95661. Dr. Chun also practices at 2025 Morse Ave, Sacramento, CA 95825. Dr. Chun's primary practice is Roseville Medical Center in Roseville, California, part of Kaiser Permanente.
What is Dr. Michael L. Chun's office phone number?
The practice phone on file for Dr. Chun is (916) 784-4000.
What is Dr. Michael L. Chun's medical license number?
Dr. Chun holds California license G68978.
Which hospitals is Dr. Michael L. Chun affiliated with?
Dr. Chun practices at Roseville Medical Center in Roseville, California.
What medical group is Dr. Michael L. Chun part of?
Dr. Chun is linked to The Permanente Medical Group, Inc.
Does Dr. Michael L. Chun accept Medicare?
Yes. CMS data shows Dr. Chun billed Medicare for 17 services in 2022.
What services does Dr. Michael L. Chun bill to Medicare?
In 2022, Dr. Chun's most billed Medicare services were office visit, established patient (99213).
Where did Dr. Michael L. Chun go to medical school?
Dr. Chun graduated from University of California, Davis School of Medicine in 1989.
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What drugs does Dr. Michael L. Chun prescribe most?
In 2024 Medicare Part D data, Dr. Chun's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Atenolol.
Has Dr. Michael L. Chun received payments from drug or device companies?
CMS Open Payments shows $167 in general payments to Dr. Chun from 1 company from 2022 to 2022. The largest total came from Stryker Corporation.
How long has Dr. Michael L. Chun been practicing?
Dr. Chun graduated from medical school in 1989, 37 years ago.
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