Dr. Mark B. Chang, MD
- Part D claims, 2024
- 17
- Hospital affiliations
- 1
- Industry payments
- $425
- Medical group
- 1
- State licenses
- 2
- Practice address
- 2025 Morse Avenue, Sacramento, CA 95825
- Practice phone
- Call (916) 973-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chang's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Mark B. Chang is an internist in Sacramento, California
Dr. Chang practices at Sacramento Medical Center in Sacramento, California, part of Kaiser Permanente.
Dr. Chang's NPI, 1164500815, was assigned on November 1, 2006. Dr. Chang graduated from University Of Kentucky College Of Medicine in 1997. Dr. Chang's California license number on file is A72079.
- NPI
- 1164500815NPI Registry (opens in a new tab)
- NPI enumeration date
- November 1, 2006
- NPI status
- Active
- Practice phone
- (916) 973-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark B. Chang practices at Sacramento Medical Center in Sacramento, California
Dr. Chang's primary practice is Sacramento Medical Center, at 2025 Morse Avenue, Sacramento, CA 95825 in Sacramento County. The practice phone is (916) 973-5000.
- Sacramento Medical Center2025 Morse Avenue, Sacramento, CA 95825 · Sacramento CountyPhone(916) 973-5000
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark B. Chang is affiliated with 1 site of care and 1 medical group
Dr. Chang's primary practice is Sacramento Medical Center in Sacramento, 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. Mark B. Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sacramento Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark B. Chang is one of 16,751 internists in California
Internal medicine is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Chang's licenses on file in 2 states: California and Ohio.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Ohio license
Internists near Dr. Chang
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. Mark B. Chang's patients have a median age of 52
Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 52, with 59% women.
Dr. Chang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 52
Patient panel by sex, all payers
- Women59%
- Men41%
Source: Dmand AI Patient Panel Data
Dr. Mark B. Chang wrote 17 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 17 Medicare Part D claims for 17 patients. CMS names the drug for 16 of them, across 1 drug with 11 or more claims each, at $816 in total drug cost. In 2023, CMS named 16 claims across 1 drug.
Dr. Chang'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: 162024: 16No change
Drugs named by CMS: 1 in 2024, 1 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. Mark B. Chang received $425 in industry payments from 2016 to 2025
CMS Open Payments shows 9 general payments to Dr. Chang from 6 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Biotronik Inc. paid the most, $164.
General payments to Dr. Chang by program year, 2016 to 2025
Companies that paid Dr. Chang the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark B. Chang has 1 award and honors on record
Dmand AI lists 1 award for Dr. Chang, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Chang
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Mark B. Chang graduated from University Of Kentucky College Of Medicine
Dr. Chang graduated from University Of Kentucky College Of Medicine in 1997. Dr. Chang is a member of ACP.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark B. Chang'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 | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Mark B. Chang
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. Mark B. Chang's NPI number?
Dr. Mark B. Chang's NPI number is 1164500815. It was assigned on November 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark B. Chang?
Dr. Mark B. Chang is an internist in Sacramento, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mark B. Chang practice?
Dr. Chang practices at 2025 Morse Avenue, Sacramento, CA 95825. Dr. Chang's primary practice is Sacramento Medical Center in Sacramento, California, part of Kaiser Permanente.
What is Dr. Mark B. Chang's office phone number?
The practice phone on file for Dr. Chang is (916) 973-5000.
What is Dr. Mark B. Chang's medical license number?
Dr. Chang's California license number on file is A72079, one of the licenses on file in 2 states.
Which states has Dr. Mark B. Chang been licensed in?
Dmand AI has state licenses on file for Dr. Chang in California (2000 to 2023) and Ohio (2000).
Which hospitals is Dr. Mark B. Chang affiliated with?
Dr. Chang practices at Sacramento Medical Center in Sacramento, California.
What medical group is Dr. Mark B. Chang part of?
Dr. Chang is linked to The Permanente Medical Group, Inc.
Where did Dr. Mark B. Chang go to medical school?
Dr. Chang graduated from University Of Kentucky College Of Medicine in 1997.
What drugs does Dr. Mark B. Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Adacel Tdap.
Has Dr. Mark B. Chang received payments from drug or device companies?
CMS Open Payments shows $425 in general payments to Dr. Chang from 6 companies from 2016 to 2025. The largest total came from Biotronik Inc.
How long has Dr. Mark B. Chang been practicing?
Dr. Chang graduated from medical school in 1997, 29 years ago.
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