Am J Kidney Dis
AntithrombinsBenzimidazolesbeta-Alanine
Dr. Don N. Chang, MD
NPI1619101805PAC ID3779769476
- Medicare services, 2024
- 1,283
- Medicare patients, 2024
- 537
- Part D claims, 2024
- 1,453
- Publications
- 3
- Hospital affiliations
- 3
- Practice address
- 2315 Stockton Boulevard, Sacramento, CA 95817
- Practice phone
- Call (916) 734-2011
- 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
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Dr. Don N. Chang is a nephrologist in Sacramento, California
Dr. Chang practices at UC Davis Medical Center in Sacramento, California, part of University of California Health.
Dr. Chang's NPI, 1619101805, was assigned on May 4, 2009. Dr. Chang graduated from OHSU School of Medicine in 2007. Dr. Chang holds California license A107520.
NPI and contact details
- NPI
- 1619101805NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3779769476
- NPI enumeration date
- May 4, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (916) 734-2011
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Don N. Chang practices at UC Davis Medical Center in Sacramento, California
Dr. Chang's primary practice is UC Davis Medical Center, at 2315 Stockton Boulevard, Sacramento, CA 95817 in Sacramento County. The practice phone is (916) 734-2011.
- UC Davis Medical Center2315 Stockton Boulevard, Sacramento, CA 95817 · Sacramento CountyPhone(916) 734-2011
Source: Dmand AI Affiliation Data
Dr. Don N. Chang is affiliated with 5 sites of care and 2 medical groups
Dr. Chang's primary practice is UC Davis Medical Center in Sacramento, California, part of University of California Health. Dr. Chang is also affiliated with Sutter Roseville Medical Center. The medical group on file is UC Davis Medical Group. Dmand AI also links Dr. Chang to 1 more hospital, 2 group practices and clinics and 1 medical group, each named with a free account.
Sutter Roseville Medical CenterUC Davis Medical Group1 hospitalName with a free account2 group practices and clinicsNames with a free account1 medical groupName with a free account
See all 7 affiliations for Dr. ChangSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Don N. Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UC Davis Medical Center | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Don N. Chang is one of 1,401 nephrologists in California
Nephrology is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Chang is board certified in nephrology by the American Board of Internal Medicine. Dr. Chang is licensed in California.
Specialties and state licenses
- Nephrology, CaliforniaPrimary
Clinical focus
Dmand AI lists acute kidney failure, chronic kidney disease, fluid and electrolyte imbalances, hypercalcemia, kidney cysts and parathyroid gland disorder among the conditions Dr. Chang treats.
Nephrologists near Dr. Chang
Counts of nephrologists with a Dmand AI profile, by place and practice. Each opens the list.
1,401nephrologists in California51nephrologists in Sacramento14nephrologists at UC Davis Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Don N. Chang billed Medicare for 1,283 services in 2024
CMS data shows 1,283 Medicare services from Dr. Chang across 6 procedure codes in 2024, for 537 Medicare patients. Medicare paid $114,504 for them.
Medicare services, 20241,283
Medicare patients537
Paid by Medicare$114,504
Procedure codes6
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,2232024: 1,2061%
- Other services
- 2023: 712024: 778%
- Lab and pathology
- 2023: 132024: 0100%
Where Dr. Chang's Medicare services took place, 2024
- In an office69154%
- In a facility59246%
Dr. Chang compared with the California median for nephrologists, 2024
- Dr. Chang
- California median
- Medicare services
- 1,283vs 1,08418% above
- Medicare patients
- 537vs 30775% above
- Part D claims
- 1,258vs 95532% above
Medians across 1,355 nephrologists in California with Dmand AI profiles that report each measure.
Dr. Chang's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Chang?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chang and other nephrologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Don N. Chang treated 537 Medicare patients in 2024, average age 76
CMS counts 537 Medicare patients who saw Dr. Chang in 2024. The largest group is 75 to 84, with 238 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 22% are also on Medicaid. Their average risk score is 3.24, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 65, with 47% women.
Medicare patients, 2024537
Average age76
Average risk score3.24
Also on Medicaid22%
Dr. Chang's Medicare patients by age, 2024
Dr. Chang's Medicare patients by sex, 2024
- Women24646%
- Men29154%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Diabetes48%
- Ischemic heart disease45%
- Heart failure42%
- Mood disorders35%
Share of Medicare patients with each condition. A patient can have several.
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 65
Patient panel by sex, all payers
- Women47%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Don N. Chang wrote 1,453 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 1,453 Medicare Part D claims for 315 patients. 95% of them were for generic drugs. CMS names the drug for 1,258 of them, across 23 drugs with 11 or more claims each, at $38,321 in total drug cost. In 2023, CMS named 1,140 claims across 20 drugs.
Part D claims, 20241,453
Drugs named by CMS23
Total drug cost$38,321
Part D patients315
Dr. Chang's Part D claims by kind of drug, 2024
- Generic1,384 claims95%
- Brand-name69 claims5%
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.
Drug classes CMS tracks in Dr. Chang's Part D claims, 2024
- Antibiotics1%19 of 1,453 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,1402024: 1,25810%
Drugs named by CMS: 23 in 2024, 20 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
How Dr. Don N. Chang takes part in Medicare
Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Don N. Chang has 3 publications on record
Dmand AI links 3 papers to Dr. Chang in 2012. 2012 was the busiest year, with 2. The most frequent topics are Antithrombins, Benzimidazoles and beta-Alanine. Dr. Chang has published most often in Am J Kidney Dis. Dr. Chang's most frequent co-author is Andrew I-Wei Chin, MD.
Papers3
Topics Dr. Chang writes about most
- Antithrombins
- Benzimidazoles
- beta-Alanine
- Drug Overdose
- Renal Dialysis
Dr. Chang's most frequent co-authors
Recent publications by Dr. Chang
Am J Kidney Dis
AntithrombinsBenzimidazolesbeta-Alanine
See who Dr. Chang researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chang works with, so you can find a warm path to the right nephrologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Don N. Chang received $963 in industry payments from 2016 to 2024
CMS Open Payments shows 25 general payments to Dr. Chang from 17 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 91% of the total. Relypsa, Inc. paid the most, $183.
General payments to Dr. Chang by program year, 2016 to 2024
General payments to Dr. Chang by kind, 2016 to 2024
$963in total
- Food and beverage$87791%
- Education$869%
Companies that paid Dr. Chang the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Don N. Chang graduated from OHSU School of Medicine
Dr. Chang graduated from OHSU School of Medicine in 2007.
- Medical school
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Don N. Chang accepts plans from 9 insurance carriers
Dr. Chang is in network with 9 carriers, including Aetna, Elevance and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Elevance
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- CMS Medicare
- +1 more carriersWith a free account
Plan types Dr. Chang accepts, by number of carriers
- Medicare8
- PPO7
- POS4
- HMO3
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Don N. 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 Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Don N. 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. Don N. Chang's NPI number?
Dr. Don N. Chang's NPI number is 1619101805. It was assigned on May 4, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Don N. Chang?
Dr. Don N. Chang is a nephrologist in Sacramento, California. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Don N. Chang practice?
Dr. Chang practices at 2315 Stockton Boulevard, Sacramento, CA 95817. Dr. Chang's primary practice is UC Davis Medical Center in Sacramento, California, part of University of California Health. Dmand AI also links Dr. Chang to 1 hospital, 2 group practices and clinics and 1 medical group.
What is Dr. Don N. Chang's office phone number?
The practice phone on file for Dr. Chang is (916) 734-2011.
What is Dr. Don N. Chang's medical license number?
Dr. Chang holds California license A107520.
Which hospitals is Dr. Don N. Chang affiliated with?
Dr. Chang practices at UC Davis Medical Center in Sacramento, California. Dr. Chang is also affiliated with Sutter Roseville Medical Center. Dmand AI links Dr. Chang to 1 more hospital.
What medical group is Dr. Don N. Chang part of?
Dr. Chang is linked to UC Davis Medical Group. Dmand AI links Dr. Chang to 1 more medical group.
Does Dr. Don N. Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 1,283 services in 2024, and Dr. Chang accepts Medicare assignment.
How many Medicare patients does Dr. Don N. Chang see?
CMS counts 537 Medicare patients who saw Dr. Chang in 2024, with an average age of 76.
Is Dr. Don N. Chang board certified?
Yes. Dr. Chang is board certified in nephrology by the American Board of Internal Medicine.
Show 8 more questionsShow fewer questions
What services does Dr. Don N. Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were office visit, established patient (99214), hospital inpatient care (99233) and medicare service (G0408).
Where did Dr. Don N. Chang go to medical school?
Dr. Chang graduated from OHSU School of Medicine in 2007.
What drugs does Dr. Don N. Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Calcitriol, Amlodipine Besylate and Carvedilol.
Has Dr. Don N. Chang received payments from drug or device companies?
CMS Open Payments shows $963 in general payments to Dr. Chang from 17 companies from 2016 to 2024. The largest total came from Relypsa, Inc.
How long has Dr. Don N. Chang been practicing?
Dr. Chang graduated from medical school in 2007, 19 years ago.
Does Dr. Don N. Chang do research?
Dmand AI links 3 publications to Dr. Chang.
Who does Dr. Don N. Chang publish with?
Dr. Chang's most frequent co-authors are Andrew I-Wei Chin, MD (3 shared papers).
What insurance does Dr. Don N. Chang accept?
Dr. Chang is in network with 9 carriers, including Aetna, Elevance and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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