Annie Chang
- Part D claims, 2024
- 1,017
- MIPS score, 2024
- 61
- Hospital affiliations
- 1
- Industry payments
- $375
- Medical group
- 1
- Practice address
- 2101 Alexian Dr, San Jose, CA 95116
- Practice phone
- Call (408) 272-6050
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Valley Health Center Alexian
FQHC - Main Site · San Jose, California
Find Annie 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.
Annie Chang is a family medicine physician in San Jose, California
Annie Chang practices at Valley Health Center Alexian in San Jose, California.
Annie Chang's NPI, 1396191995, was assigned on May 12, 2016. Annie Chang graduated from UCSF School of Medicine in 2015. Annie Chang holds California license A153415.
- NPI
- 1396191995NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1052743630
- NPI enumeration date
- May 12, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (408) 272-6050
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Annie Chang practices at Valley Health Center Alexian in San Jose, California
Annie Chang's primary practice is Valley Health Center Alexian, at 2101 Alexian Dr, San Jose, CA 95116 in Santa Clara County. The practice phone is (408) 272-6050.
- Valley Health Center Alexian2101 Alexian Dr, San Jose, CA 95116 · Santa Clara CountyPhone(408) 272-6050
Source: Dmand AI Affiliation Data
Annie Chang is affiliated with 3 sites of care and 1 medical group
Annie Chang's primary practice is Valley Health Center Alexian in San Jose, California. Annie Chang is also affiliated with Santa Clara Valley Medical Center. The medical group on file is County of Santa Clara Behavioral Health Services, Las Plumas Behavioral Health Clinic. Dmand AI also links Annie Chang to 1 more group practice or clinic, named with a free account. Annie Chang's employer is on file too: a community health center (fqhc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Annie Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Annie Chang practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Valley Health Center Alexian | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Annie Chang is one of 15,680 family medicine physicians in California
Family medicine is Annie Chang's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Annie Chang is board certified in family medicine by the American Board of Family Medicine. Annie Chang is licensed in California.
Specialties and state licenses
- Family medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acid reflux, acute mini-stroke (TIA), alcohol use disorders, cardiomyopathy, chronic diabetes, chronic hypertension, fibromyalgia and chronic pain and joint pain among the conditions Annie Chang treats.
Family medicine physicians near Annie Chang
Counts of family medicine physicians 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
Annie Chang's patients have a median age of 49
Across all payers, Dmand AI patient panel data puts Annie Chang's median patient age at 49, with 37% women.
Annie 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 49
Patient panel by sex, all payers
- Women37%
- Men62%
Source: Dmand AI Patient Panel Data
Annie Chang wrote 1,017 Medicare Part D claims in 2024
In 2024, Annie Chang wrote 1,017 Medicare Part D claims for 107 patients. 77% of them were for generic drugs. CMS names the drug for 570 of them, across 27 drugs with 11 or more claims each, at $91,125 in total drug cost. In 2023, CMS named 539 claims across 25 drugs.
Annie Chang's Part D claims by kind of drug, 2024
- Generic782 claims77%
- Brand-name and other235 claims23%
Annie 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 Annie Chang's Part D claims, 2024
- Opioids5%51 of 1,017 claims
- Antibiotics1%12 of 1,017 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: 5392024: 5706%
Drugs named by CMS: 27 in 2024, 25 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
Annie Chang scored 61 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 61 out of 100 for Annie Chang for performance year 2024, reported as part of a group. Annie Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Annie Chang's MIPS scores, performance year 2024
- 61of 100Final score
- 59.4of 100Quality
- 0of 100Promoting Interoperability
- 40of 100Improvement Activities
- 71of 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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Annie Chang received $375 in industry payments from 2018 to 2025
CMS Open Payments shows 4 general payments to Annie Chang from 4 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Abbott Laboratories paid the most, $130.
General payments to Annie Chang by program year, 2018 to 2025
Companies that paid Annie Chang the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Annie Chang graduated from UCSF School of Medicine
Annie Chang graduated from UCSF School of Medicine in 2015.
- Medical school
- Board certified in family medicine
- Board certified in addiction medicine
Source: Dmand AI Professional Profile Data
Annie Chang accepts plans from 3 insurance carriers
Annie Chang is in network with 3 carriers, including Aetna, Blue Cross Blue Shield of Michigan and CMS Medicare. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- CMS Medicare
Plan types Annie Chang accepts, by number of carriers
- HMO2
- Medicare2
- POS2
- PPO2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Annie 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 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) |
| 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) |
| 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 Annie 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 Annie Chang's NPI number?
Annie Chang's NPI number is 1396191995. It was assigned on May 12, 2016, and it is active in the NPI Registry.
What does Annie Chang specialize in?
Annie Chang is a family medicine physician in San Jose, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Annie Chang practice?
Annie Chang practices at 2101 Alexian Dr, San Jose, CA 95116. Annie Chang's primary practice is Valley Health Center Alexian in San Jose, California. Dmand AI also links Annie Chang to 1 group practice or clinic.
What is Annie Chang's office phone number?
The practice phone on file for Annie Chang is (408) 272-6050.
What is Annie Chang's medical license number?
Annie Chang holds California license A153415.
Which hospitals is Annie Chang affiliated with?
Annie Chang is affiliated with Santa Clara Valley Medical Center.
What medical group is Annie Chang part of?
Annie Chang is linked to County of Santa Clara Behavioral Health Services, Las Plumas Behavioral Health Clinic.
Does Annie Chang accept Medicare?
Yes. CMS lists Annie Chang as accepting Medicare assignment.
What is Annie Chang's MIPS score?
Annie Chang's MIPS final score for performance year 2024 is 61 out of 100, reported as part of a group.
Is Annie Chang board certified?
Yes. Annie Chang is board certified in family medicine by the American Board of Family Medicine.
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Where did Annie Chang go to medical school?
Annie Chang graduated from UCSF School of Medicine in 2015.
What drugs does Annie Chang prescribe most?
In 2024 Medicare Part D data, Annie Chang's most prescribed drugs by claims were Atorvastatin Calcium, Gabapentin and Amlodipine Besylate.
Has Annie Chang received payments from drug or device companies?
CMS Open Payments shows $375 in general payments to Annie Chang from 4 companies from 2018 to 2025. The largest total came from Abbott Laboratories.
How long has Annie Chang been practicing?
Annie Chang graduated from medical school in 2015, 11 years ago.
What insurance does Annie Chang accept?
Annie Chang is in network with 3 carriers, including Aetna, Blue Cross Blue Shield of Michigan and CMS Medicare. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.
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