Aileen Chang, OD
- Medicare patients, 2024
- 439
- Part D claims, 2024
- 471
- Industry payments
- $343
- Affiliated sites
- 1
- Medical groups
- 2
- Practice address
- 1085 W El Camino Real, Sunnyvale, CA 94087-1030
- Practice phone
- Call (408) 524-5900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Palo Alto Medial Foundation
Multi-specialty group site · Sunnyvale, California
Find Aileen 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.
Aileen Chang is an optometrist in Sunnyvale, California
Aileen Chang practices at Palo Alto Medial Foundation in Sunnyvale, California.
Aileen Chang's NPI, 1356781785, was assigned on June 30, 2013. Aileen Chang graduated from Southern California College of Optometry in 2013. Aileen Chang holds California license 14626TLG.
- NPI
- 1356781785NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1153610183
- NPI enumeration date
- June 30, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (408) 524-5900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Aileen Chang practices at Palo Alto Medial Foundation in Sunnyvale, California
Aileen Chang's primary practice is Palo Alto Medial Foundation, at 1085 W El Camino Real, Sunnyvale, CA 94087-1030. The practice phone is (408) 524-5900.
- Palo Alto Medial Foundation1085 W El Camino Real, Sunnyvale, CA 94087-1030Phone(408) 524-5900
Source: Dmand AI Affiliation Data
Aileen Chang is affiliated with 1 site of care and 2 medical groups
Aileen Chang's primary practice is Palo Alto Medial Foundation in Sunnyvale, California. The medical group on file is Palo Alto Foundation Medical Group. Dmand AI also links Aileen Chang to 1 more medical group, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Aileen Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Aileen Chang practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Palo Alto Medial Foundation | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Aileen Chang is one of 7,206 optometrists in California
Optometrist is Aileen Chang's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Dmand AI has Aileen Chang's licenses on file in 2 states: California and New York.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
- New York license
Optometrists near Aileen Chang
Counts of optometrists 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
Aileen Chang treated 439 Medicare patients in 2024, average age 75
CMS counts 439 Medicare patients who saw Aileen Chang in 2024. The largest group is 65 to 74, with 204 patients. 75% of them have high cholesterol, and 64% have high blood pressure. 12% are also on Medicaid. Their average risk score is 0.87, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Aileen Chang's median patient age at 69, with 57% women.
Aileen Chang's Medicare patients by age, 2024
Aileen Chang's Medicare patients by sex, 2024
- Women25458%
- Men18542%
Chronic conditions among Aileen Chang's Medicare patients, 2024
- High cholesterol75%
- High blood pressure64%
- Diabetes42%
- Arthritis29%
- Chronic kidney disease25%
- Ischemic heart disease20%
- Osteoporosis15%
- Cancer13%
Share of Medicare patients with each condition. A patient can have several.
Aileen 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 69
Patient panel by sex, all payers
- Women57%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Aileen Chang wrote 471 Medicare Part D claims in 2024
In 2024, Aileen Chang wrote 471 Medicare Part D claims for 120 patients. 35% of them were for generic drugs.
Aileen Chang's Part D claims by kind of drug, 2024
- Generic164 claims35%
- Brand-name307 claims65%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Aileen Chang takes part in Medicare
Aileen 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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Aileen Chang received $343 in industry payments in 2025
CMS Open Payments shows 5 general payments to Aileen Chang from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Tarsus Pharmaceuticals, Inc. paid the most, $343.
Companies that paid Aileen Chang the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Aileen Chang graduated from Southern California College of Optometry
Aileen Chang graduated from Southern California College of Optometry in 2013.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Aileen 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 Data |
| 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 (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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Aileen 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 Aileen Chang's NPI number?
Aileen Chang's NPI number is 1356781785. It was assigned on June 30, 2013, and it is active in the NPI Registry.
What does Aileen Chang specialize in?
Aileen Chang is an optometrist in Sunnyvale, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Aileen Chang practice?
Aileen Chang practices at 1085 W El Camino Real, Sunnyvale, CA 94087-1030. Aileen Chang's primary practice is Palo Alto Medial Foundation in Sunnyvale, California. Dmand AI also links Aileen Chang to 1 medical group.
What is Aileen Chang's office phone number?
The practice phone on file for Aileen Chang is (408) 524-5900.
What is Aileen Chang's medical license number?
Aileen Chang holds California license 14626TLG, one of the licenses on file in 2 states.
Which states has Aileen Chang been licensed in?
Dmand AI has state licenses on file for Aileen Chang in California and New York.
What medical group is Aileen Chang part of?
Aileen Chang is linked to Palo Alto Foundation Medical Group. Dmand AI links Aileen Chang to 1 more medical group.
Does Aileen Chang accept Medicare?
Yes. CMS lists Aileen Chang as accepting Medicare assignment.
How many Medicare patients does Aileen Chang see?
CMS counts 439 Medicare patients who saw Aileen Chang in 2024, with an average age of 75.
Where did Aileen Chang go to medical school?
Aileen Chang graduated from Southern California College of Optometry in 2013.
Has Aileen Chang received payments from drug or device companies?
CMS Open Payments shows $343 in general payments to Aileen Chang from 1 company from 2025 to 2025. The largest total came from Tarsus Pharmaceuticals, Inc.
How long has Aileen Chang been practicing?
Aileen Chang graduated from medical school in 2013, 13 years ago.
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