Eric Chang, OD
- Medicare patients, 2024
- 92
- Part D claims, 2024
- 73
- Affiliated sites
- 3
- State license
- 1
- Year NPI issued
- 2008
- Practice address
- 1301 4th Ave Nw Ste 301, Issaquah, WA 98027
- Practice phone
- Call (425) 451-7335
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Eastside Endoscopy Center - Issaquah
Surgery Center - Medicare-Certified · Issaquah, Washington
Find Eric 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.
Eric Chang is an optometrist in Issaquah, Washington
Eric Chang practices at Eastside Endoscopy Center - Issaquah in Issaquah, Washington.
Eric Chang's NPI, 1427207216, was assigned on September 16, 2008. Eric Chang graduated from University of California - School of Optometry in 2008. Eric Chang holds Washington license OD 60035981.
- NPI
- 1427207216NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1456574839
- NPI enumeration date
- September 16, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (425) 451-7335
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Eric Chang practices at Eastside Endoscopy Center - Issaquah in Issaquah, Washington
Eric Chang's primary practice is Eastside Endoscopy Center - Issaquah, at 1301 4th Ave Nw Ste 301, Issaquah, WA 98027. The practice phone is (425) 451-7335.
- Eastside Endoscopy Center - Issaquah1301 4th Ave Nw Ste 301, Issaquah, WA 98027Phone(425) 451-7335
Source: Dmand AI Affiliation Data
Eric Chang is affiliated with 3 sites of care
Eric Chang's primary practice is Eastside Endoscopy Center - Issaquah in Issaquah, Washington. Dmand AI also links Eric Chang to 1 physician office and 1 ambulatory surgery center, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Eric Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Eric Chang practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Eastside Endoscopy Center - Issaquah | Available with a free account |
| +2 more affiliated sites | 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
Eric Chang is one of 1,258 optometrists in Washington
Optometrist is Eric Chang's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Eric Chang is licensed in Washington.
Specialties and state licenses
- Optometrist, WashingtonPrimary
Optometrists near Eric 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
Eric Chang treated 92 Medicare patients in 2024, average age 74
CMS counts 92 Medicare patients who saw Eric Chang in 2024. The largest group is 65 to 74, with 52 patients. 61% of them have high cholesterol, and 49% have high blood pressure. Their average risk score is 0.72, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Eric Chang's median patient age at 70, with 59% women.
Eric Chang's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Eric Chang's Medicare patients by sex, 2024
- Women4953%
- Men4347%
Chronic conditions among Eric Chang's Medicare patients, 2024
- High cholesterol61%
- High blood pressure49%
- Arthritis28%
- Diabetes17%
- Anxiety14%
- Osteoporosis14%
- Cancer13%
- Chronic kidney disease13%
Share of Medicare patients with each condition. A patient can have several.
Eric 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 70
Patient panel by sex, all payers
- Women59%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Eric Chang wrote 73 Medicare Part D claims in 2024
In 2024, Eric Chang wrote 73 Medicare Part D claims for 28 patients. 51% of them were for generic drugs.
Eric Chang's Part D claims by kind of drug, 2024
- Generic37 claims51%
- Brand-name36 claims49%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Eric Chang takes part in Medicare
Eric Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Cataract surgery: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Eric Chang graduated from University of California - School of Optometry
Eric Chang graduated from University of California - School of Optometry in 2008.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Eric 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 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)Doctors and Clinicians Utilization Data (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 Eric 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 Eric Chang's NPI number?
Eric Chang's NPI number is 1427207216. It was assigned on September 16, 2008, and it is active in the NPI Registry.
What does Eric Chang specialize in?
Eric Chang is an optometrist in Issaquah, Washington. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Eric Chang practice?
Eric Chang practices at 1301 4th Ave Nw Ste 301, Issaquah, WA 98027. Eric Chang's primary practice is Eastside Endoscopy Center - Issaquah in Issaquah, Washington. Dmand AI also links Eric Chang to 1 physician office and 1 ambulatory surgery center.
What is Eric Chang's office phone number?
The practice phone on file for Eric Chang is (425) 451-7335.
What is Eric Chang's medical license number?
Eric Chang holds Washington license OD 60035981.
Does Eric Chang accept Medicare?
Yes. CMS lists Eric Chang as accepting Medicare assignment.
How many Medicare patients does Eric Chang see?
CMS counts 92 Medicare patients who saw Eric Chang in 2024, with an average age of 74.
Where did Eric Chang go to medical school?
Eric Chang graduated from University of California - School of Optometry in 2008.
How long has Eric Chang been practicing?
Eric Chang graduated from medical school in 2008, 18 years ago.
Selling to optometrist practices?
See optometrists in Washington by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card