Derek Chang
- Medicare services, 2024
- 78
- Medicare patients, 2024
- 81
- Hospital affiliations
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 2000 Mowry Ave, Fremont, CA 94538
- Practice phone
- Call (510) 797-1111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Derek 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.
Derek Chang is an anesthesiologist in Fremont, California
Derek Chang practices at Washington Health in Fremont, California, part of Washington Health.
Derek Chang's NPI, 1477181451, was assigned on March 27, 2020. Derek Chang holds California license 186713.
- NPI
- 1477181451NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5092252650
- NPI enumeration date
- March 27, 2020
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (510) 797-1111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Derek Chang practices at Washington Health in Fremont, California
Derek Chang's primary practice is Washington Health, at 2000 Mowry Ave, Fremont, CA 94538 in Alameda County. The practice phone is (510) 797-1111.
- Washington Health2000 Mowry Ave, Fremont, CA 94538 · Alameda CountyPhone(510) 797-1111
Source: Dmand AI Affiliation Data
Derek Chang is affiliated with 2 sites of care and 1 medical group
Derek Chang's primary practice is Washington Health in Fremont, California, part of Washington Health. The medical group on file is CEP America. Dmand AI also links Derek Chang to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Derek Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Derek Chang practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Washington Health | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Washington Health and 6.2K+ hospitals, with verified contacts in the same login.
Derek Chang is one of 6,593 anesthesiologists in California
Anesthesiology is Derek Chang's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Derek Chang is licensed in California.
Specialties and state licenses
- Anesthesiology, CaliforniaPrimary
Anesthesiologists near Derek Chang
Counts of anesthesiologists 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
Derek Chang billed Medicare for 78 services in 2024
CMS data shows 78 Medicare services from Derek Chang across 3 procedure codes in 2024, for 81 Medicare patients. Medicare paid $9,080 for them. Every service was in a facility, such as a hospital, rather than an office.
Derek Chang's Medicare services by type, 2024
- Surgery54
- Anesthesia24
Derek Chang compared with the California median for anesthesiologists, 2024
- Derek Chang
- California median
- Medicare services
- 78vs 728% above
- Medicare patients
- 81vs 14343% below
Medians across 5,562 anesthesiologists in California with Dmand AI profiles that report each measure.
Derek 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 Derek Chang and other anesthesiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Derek Chang treated 81 Medicare patients in 2024, average age 74
CMS counts 81 Medicare patients who saw Derek Chang in 2024. The largest group is 65 to 74, with 43 patients. 75% of them have arthritis, and 75% have high blood pressure. 30% are also on Medicaid. Their average risk score is 1.33, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Derek Chang's median patient age at 65, with 52% women.
Derek Chang's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Derek Chang's Medicare patients by sex, 2024
- Women4151%
- Men4049%
Chronic conditions among Derek Chang's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Diabetes38%
- Chronic kidney disease23%
- Anxiety19%
- Ischemic heart disease19%
- Mood disorders19%
Share of Medicare patients with each condition. A patient can have several.
Derek 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
- Women52%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Derek Chang takes part in Medicare
Derek 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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Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Sources for Derek 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) |
| 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 Derek 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 Derek Chang's NPI number?
Derek Chang's NPI number is 1477181451. It was assigned on March 27, 2020, and it is active in the NPI Registry.
What does Derek Chang specialize in?
Derek Chang is an anesthesiologist in Fremont, California. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Derek Chang practice?
Derek Chang practices at 2000 Mowry Ave, Fremont, CA 94538. Derek Chang's primary practice is Washington Health in Fremont, California, part of Washington Health. Dmand AI also links Derek Chang to 1 group practice or clinic.
What is Derek Chang's office phone number?
The practice phone on file for Derek Chang is (510) 797-1111.
What is Derek Chang's medical license number?
Derek Chang holds California license 186713.
Which hospitals is Derek Chang affiliated with?
Derek Chang practices at Washington Health in Fremont, California.
What medical group is Derek Chang part of?
Derek Chang is linked to CEP America.
Does Derek Chang accept Medicare?
Yes. CMS data shows Derek Chang billed Medicare for 78 services in 2024, and Derek Chang accepts Medicare assignment.
How many Medicare patients does Derek Chang see?
CMS counts 81 Medicare patients who saw Derek Chang in 2024, with an average age of 74.
What services does Derek Chang bill to Medicare?
In 2024, Derek Chang's most billed Medicare services were surgery: brain, spine and nerves (62322), anesthesia (01402) and surgery: brain, spine and nerves (64447).
How long has Derek Chang been practicing?
Derek Chang graduated from medical school in 2020, 6 years ago.
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