Dr. Harvey Chung-Der Chang, MD
- Medicare services, 2024
- 7,895
- Medicare patients, 2024
- 1,744
- Publications
- 1
- MIPS score, 2024
- 73
- Hospital affiliations
- 3
- Practice address
- 1700 Coffee Rd, Modesto, CA 95355
- Practice phone
- Call (209) 526-4500
- 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. Harvey Chung-Der Chang is a pathologist in Modesto, California
Dr. Chang practices at Memorial Medical Center in Modesto, California, part of Sutter Health.
Dr. Chang's NPI, 1629074810, was assigned on June 22, 2005. Dr. Chang graduated from National Taiwan University College of Medicine in 1977. Dr. Chang holds California license C50076.
- NPI
- 1629074810NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8325022320
- NPI enumeration date
- June 22, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (209) 526-4500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 76
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Harvey Chung-Der Chang practices at Memorial Medical Center in Modesto, California
Dr. Chang's primary practice is Memorial Medical Center, at 1700 Coffee Rd, Modesto, CA 95355 in Stanislaus County. The practice phone is (209) 526-4500.
- Memorial Medical Center1700 Coffee Rd, Modesto, CA 95355 · Stanislaus CountyPhone(209) 526-4500
Source: Dmand AI Affiliation Data
Dr. Harvey Chung-Der Chang is affiliated with 4 sites of care and 1 medical group
Dr. Chang's primary practice is Memorial Medical Center in Modesto, California, part of Sutter Health. Dr. Chang is also affiliated with Adventist Health Bakersfield. The medical group on file is Yosemite Pathology & Precision Pathology. Dmand AI also links Dr. Chang to 1 more hospital and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Harvey Chung-Der Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Memorial Medical Center | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Harvey Chung-Der Chang is one of 1,354 pathologists in California
Anatomic pathology and clinical pathology is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207ZP0102X. Dr. Chang is board certified in anatomic pathology & clinical pathology by the American Board of Pathology. Dmand AI has Dr. Chang's licenses on file in 3 states: California, Pennsylvania and Massachusetts.
Specialties and state licenses
- Anatomic pathology and clinical pathology, CaliforniaPrimary
- Pennsylvania license
- Massachusetts license
Pathologists near Dr. Chang
Counts of pathologists 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. Harvey Chung-Der Chang billed Medicare for 7,895 services in 2024
CMS data shows 7,895 Medicare services from Dr. Chang across 22 procedure codes in 2024, for 1,744 Medicare patients. Medicare paid $200,472 for them.
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 7,6552024: 7,8953%
- Other services
- 2023: 152024: 0100%
Where Dr. Chang's Medicare services took place, 2024
- In an office1652%
- In a facility7,73098%
Dr. Chang compared with the California median for pathologists, 2024
- Dr. Chang
- California median
- Medicare services
- 7,895vs 1,1536.8 times
- Medicare patients
- 1,744vs 4473.9 times
Medians across 1,094 pathologists 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chang and other pathologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Harvey Chung-Der Chang treated 1,744 Medicare patients in 2024, average age 72
CMS counts 1,744 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 769 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 30% are also on Medicaid. Their average risk score is 1.68, 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 48, with 60% women.
Dr. Chang's Medicare patients by age, 2024
Dr. Chang's Medicare patients by sex, 2024
- Women1,02559%
- Men71941%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Diabetes41%
- Chronic kidney disease36%
- Ischemic heart disease31%
- Anxiety29%
- Mood disorders28%
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 48
Patient panel by sex, all payers
- Women60%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Harvey Chung-Der Chang scored 73 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 73 out of 100 for Dr. Chang for performance year 2024, reported individually. Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Chang's MIPS scores, performance year 2024
- 73of 100Final score
- 80.3of 100Quality
- 0of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Harvey Chung-Der Chang has 1 publication on record
Dmand AI links 1 paper to Dr. Chang in 2024. Dr. Chang's most frequent co-authors are Hector F. Bonilla, MD, Goar Egoryan, MD and Vanessa El Kamari, MD.
Dr. Chang's most frequent co-authors
- Hector F. Bonilla, MD1 shared paper
- Goar Egoryan, MD1 shared paper
- Vanessa El Kamari, MD1 shared paper
Recent publications by Dr. Chang
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 pathologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Harvey Chung-Der Chang received $1,539 in industry payments from 2016 to 2023
CMS Open Payments shows 16 general payments to Dr. Chang from 12 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $211.
General payments to Dr. Chang by program year, 2016 to 2023
Companies that paid Dr. Chang the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Harvey Chung-Der Chang graduated from National Taiwan University College of Medicine
Dr. Chang graduated from National Taiwan University College of Medicine in 1977.
- Medical school
- Board certified in anatomic pathology & clinical pathology
- Board certified in dermatopathology
Source: Dmand AI Professional Profile Data
Dr. Harvey Chung-Der Chang accepts plans from 9 insurance carriers
Dr. Chang is in network with 9 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- +1 more carriersWith a free account
Plan types Dr. Chang accepts, by number of carriers
- Medicare7
- PPO6
- POS4
- HMO3
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Harvey Chung-Der 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (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. Harvey Chung-Der 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. Harvey Chung-Der Chang's NPI number?
Dr. Harvey Chung-Der Chang's NPI number is 1629074810. It was assigned on June 22, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Harvey Chung-Der Chang?
Dr. Harvey Chung-Der Chang is a pathologist in Modesto, California. The primary specialty in the NPI Registry is Anatomic Pathology & Clinical Pathology Physician (taxonomy code 207ZP0102X).
Where does Dr. Harvey Chung-Der Chang practice?
Dr. Chang practices at 1700 Coffee Rd, Modesto, CA 95355. Dr. Chang's primary practice is Memorial Medical Center in Modesto, California, part of Sutter Health. Dmand AI also links Dr. Chang to 1 hospital and 1 group practice or clinic.
What is Dr. Harvey Chung-Der Chang's office phone number?
The practice phone on file for Dr. Chang is (209) 526-4500.
What is Dr. Harvey Chung-Der Chang's medical license number?
Dr. Chang holds California license C50076, one of the licenses on file in 3 states.
Which states has Dr. Harvey Chung-Der Chang been licensed in?
Dmand AI has state licenses on file for Dr. Chang in California (1997 to 2027), Pennsylvania (1996 to 2010) and Massachusetts (1983 to 2009).
Which hospitals is Dr. Harvey Chung-Der Chang affiliated with?
Dr. Chang practices at Memorial Medical Center in Modesto, California. Dr. Chang is also affiliated with Adventist Health Bakersfield. Dmand AI links Dr. Chang to 1 more hospital.
What medical group is Dr. Harvey Chung-Der Chang part of?
Dr. Chang is linked to Yosemite Pathology & Precision Pathology.
Does Dr. Harvey Chung-Der Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 7,895 services in 2024, and Dr. Chang accepts Medicare assignment.
What is Dr. Harvey Chung-Der Chang's MIPS score?
Dr. Chang's MIPS final score for performance year 2024 is 73 out of 100, reported individually.
Show 9 more questionsShow fewer questions
How many Medicare patients does Dr. Harvey Chung-Der Chang see?
CMS counts 1,744 Medicare patients who saw Dr. Chang in 2024, with an average age of 72.
Is Dr. Harvey Chung-Der Chang board certified?
Yes. Dr. Chang is board certified in anatomic pathology & clinical pathology by the American Board of Pathology.
What services does Dr. Harvey Chung-Der Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were lab and pathology test (88305), lab and pathology test (88342) and lab and pathology test (88313).
Where did Dr. Harvey Chung-Der Chang go to medical school?
Dr. Chang graduated from National Taiwan University College of Medicine in 1977.
Has Dr. Harvey Chung-Der Chang received payments from drug or device companies?
CMS Open Payments shows $1,539 in general payments to Dr. Chang from 12 companies from 2016 to 2023. The largest total came from Amgen Inc.
How long has Dr. Harvey Chung-Der Chang been practicing?
Dr. Chang graduated from medical school in 1977, 49 years ago.
Does Dr. Harvey Chung-Der Chang do research?
Dmand AI links 1 publication to Dr. Chang.
Who does Dr. Harvey Chung-Der Chang publish with?
Dr. Chang's most frequent co-authors are Hector F. Bonilla, MD (1 shared paper), Goar Egoryan, MD (1 shared paper) and Vanessa El Kamari, MD (1 shared paper).
What insurance does Dr. Harvey Chung-Der Chang accept?
Dr. Chang is in network with 9 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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