May-May Chan, OD
- Medicare patients, 2024
- 33
- Industry payments
- $108
- Affiliated sites
- 2
- Medical groups
- 2
- State license
- 1
- Practice address
- 4241 Century Blvd, Pittsburg, CA 94565-7113
- Practice phone
- Call (925) 706-4400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Site For Sore Eyes
Eye care practice · Pittsburg, California
Find May-May Chan'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.
May-May Chan is an optometrist in Sacramento, California
May-May Chan practices at Site For Sore Eyes in Pittsburg, California.
May-May Chan's NPI, 1669515169, was assigned on February 14, 2007. May-May Chan graduated from New England College of Optometry in 1993. May-May Chan holds California license 10298T.
- NPI
- 1669515169NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4587060074
- NPI enumeration date
- February 14, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (925) 706-4400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
May-May Chan practices in Pittsburg and Sacramento
May-May Chan's primary practice is Site for Sore Eyes, at 4241 Century Blvd, Pittsburg, CA 94565-7113. The practice phone is (925) 706-4400. The NPI Registry lists May-May Chan's practice address as 1500 Capitol Ave, Sacramento, CA 95814.
- Site for Sore EyesPrimary4241 Century Blvd, Pittsburg, CA 94565-7113Phone(925) 706-4400
- NPI Registry address1500 Capitol Ave, Sacramento, CA 95814 · Sacramento County
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
May-May Chan is affiliated with 2 sites of care and 2 medical groups
May-May Chan's primary practice is Site For Sore Eyes in Pittsburg, California. Dmand AI also links May-May Chan to 2 medical groups and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at May-May Chan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where May-May Chan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Site For Sore Eyes | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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May-May Chan is one of 7,206 optometrists in California
Optometrist is May-May Chan's primary specialty in the NPI Registry, under taxonomy code 152W00000X. May-May Chan is licensed in California.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
Optometrists near May-May Chan
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
May-May Chan treated 33 Medicare patients in 2024, average age 72
CMS counts 33 Medicare patients who saw May-May Chan in 2024. The largest group is 65 to 74, with 20 patients. 75% of them have high cholesterol, and 58% have high blood pressure. Their average risk score is 1.02, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts May-May Chan's median patient age at 72, with 45% women.
May-May Chan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
May-May Chan's Medicare patients by sex, 2024
- Women1855%
- Men1545%
Chronic conditions among May-May Chan's Medicare patients, 2024
- High cholesterol75%
- High blood pressure58%
Share of Medicare patients with each condition. A patient can have several.
May-May Chan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women45%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How May-May Chan takes part in Medicare
May-May Chan 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)
May-May Chan received $108 in industry payments in 2025
CMS Open Payments shows 4 general payments to May-May Chan from 3 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $55.
Companies that paid May-May Chan the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
May-May Chan graduated from New England College of Optometry
May-May Chan graduated from New England College of Optometry in 1993.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for May-May Chan'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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) |
| 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 May-May Chan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is May-May Chan's NPI number?
May-May Chan's NPI number is 1669515169. It was assigned on February 14, 2007, and it is active in the NPI Registry.
What does May-May Chan specialize in?
May-May Chan is an optometrist in Sacramento, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does May-May Chan practice?
May-May Chan practices at 4241 Century Blvd, Pittsburg, CA 94565-7113. May-May Chan also practices at 1500 Capitol Ave, Sacramento, CA 95814. May-May Chan's primary practice is Site For Sore Eyes in Pittsburg, California. Dmand AI also links May-May Chan to 2 medical groups and 1 group practice or clinic.
What is May-May Chan's office phone number?
The practice phone on file for May-May Chan is (925) 706-4400.
What is May-May Chan's medical license number?
May-May Chan holds California license 10298T.
Does May-May Chan accept Medicare?
Yes. CMS lists May-May Chan as accepting Medicare assignment.
How many Medicare patients does May-May Chan see?
CMS counts 33 Medicare patients who saw May-May Chan in 2024, with an average age of 72.
Where did May-May Chan go to medical school?
May-May Chan graduated from New England College of Optometry in 1993.
Has May-May Chan received payments from drug or device companies?
CMS Open Payments shows $108 in general payments to May-May Chan from 3 companies from 2025 to 2025. The largest total came from Alcon Laboratories Inc.
How long has May-May Chan been practicing?
May-May Chan graduated from medical school in 1993, 33 years ago.
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