Michael Ling Chang, OD
- Hospital affiliations
- 1
- Industry payments
- $29
- Medical groups
- 2
- State license
- 1
- Year NPI issued
- 2025
- Practice address
- 505 Parnassus Ave, Box 0296, San Francisco, CA 94143
- Practice phone
- Call (415) 353-2733
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Michael 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.
Michael Ling Chang is an optometrist in San Francisco, California
Michael Chang practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health.
Michael Chang's NPI, 1811792435, was assigned on February 18, 2025. Michael Chang holds California license OPT35749.
- NPI
- 1811792435NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0648781849
- NPI enumeration date
- February 18, 2025
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (415) 353-2733
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 28
- Medical school graduation
- 2024
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Michael Ling Chang practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California
Michael Chang's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights, at 505 Parnassus Ave, Box 0296, San Francisco, CA 94143 in San Francisco County. The practice phone is (415) 353-2733.
- UCSF Helen Diller Medical Center at Parnassus Heights505 Parnassus Ave, Box 0296, San Francisco, CA 94143 · San Francisco CountyPhone(415) 353-2733
Source: Dmand AI Affiliation Data
Michael Ling Chang is affiliated with 3 sites of care and 2 medical groups
Michael Chang's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health. The medical group on file is UCSF Pediatrics. Dmand AI also links Michael Chang to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Michael Ling Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Michael Chang practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCSF Helen Diller Medical Center at Parnassus Heights | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Michael Ling Chang is one of 7,206 optometrists in California
Optometrist is Michael Chang's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Michael Chang is licensed in California.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
Optometrists near Michael 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
Michael Ling Chang's patients have a median age of 66
Across all payers, Dmand AI patient panel data puts Michael Chang's median patient age at 66, with 53% women.
Michael 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 66
Patient panel by sex, all payers
- Women53%
- Men42%
Source: Dmand AI Patient Panel Data
How Michael Ling Chang takes part in Medicare
Michael 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)
Michael Ling Chang received $29 in industry payments in 2025
CMS Open Payments shows 1 general payment to Michael Chang from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Sight Sciences, Inc. paid the most, $29.
Companies that paid Michael 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
Sources for Michael Ling 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 |
| 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) |
| 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 Michael Ling 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 Michael Ling Chang's NPI number?
Michael Ling Chang's NPI number is 1811792435. It was assigned on February 18, 2025, and it is active in the NPI Registry.
What does Michael Ling Chang specialize in?
Michael Ling Chang is an optometrist in San Francisco, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Michael Ling Chang practice?
Michael Chang practices at 505 Parnassus Ave, Box 0296, San Francisco, CA 94143. Michael Chang's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health. Dmand AI also links Michael Chang to 2 group practices and clinics and 1 medical group.
What is Michael Ling Chang's office phone number?
The practice phone on file for Michael Chang is (415) 353-2733.
What is Michael Ling Chang's medical license number?
Michael Chang holds California license OPT35749.
Which hospitals is Michael Ling Chang affiliated with?
Michael Chang practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California.
What medical group is Michael Ling Chang part of?
Michael Chang is linked to UCSF Pediatrics. Dmand AI links Michael Chang to 1 more medical group.
Does Michael Ling Chang accept Medicare?
Yes. CMS lists Michael Chang as accepting Medicare assignment.
Has Michael Ling Chang received payments from drug or device companies?
CMS Open Payments shows $29 in general payments to Michael Chang from 1 company from 2025 to 2025. The largest total came from Sight Sciences, Inc.
How long has Michael Ling Chang been practicing?
Michael Chang graduated from medical school in 2024, 2 years ago.
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