Dr. Eric Chang, DO
- Part D claims, 2024
- 33
- Industry payments
- $4,139
- State licenses
- 2
- Year NPI issued
- 2008
- Practice address
- 835 Hopkins Rd, Buffalo, NY 14221
- Practice phone
- Call (315) 469-8700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
CNY Fertility Center
Buffalo, New York
Find Dr. 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.
Dr. Eric Chang is a gynecology physician in Buffalo, New York
Dr. Chang practices at CNY Fertility Center in Buffalo, New York.
Dr. Chang's NPI, 1538321203, was assigned on June 25, 2008. Dr. Chang holds New York license 301263.
- NPI
- 1538321203NPI Registry (opens in a new tab)
- NPI enumeration date
- June 25, 2008
- NPI status
- Active
- Practice phone
- (315) 469-8700
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Eric Chang practices at CNY Fertility Center in Buffalo, New York
Dr. Chang's primary practice is CNY Fertility Center, at 835 Hopkins Rd, Buffalo, NY 14221 in Erie County. The practice phone is (315) 469-8700.
- CNY Fertility Center835 Hopkins Rd, Buffalo, NY 14221 · Erie CountyPhone(315) 469-8700
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Eric Chang is affiliated with 1 site of care
Dr. Chang's primary practice is CNY Fertility Center in Buffalo, New York.
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Eric Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| CNY Fertility Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Eric Chang is one of 261 gynecology physicians in New York
Gynecology is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207VG0400X. Dmand AI has Dr. Chang's licenses on file in 2 states: New York and New Jersey.
Specialties and state licenses
- Gynecology, New YorkPrimary
- Obstetrics, New Jersey
Gynecology physicians near Dr. Chang
Counts of gynecology 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
Dr. Eric Chang's patients have a median age of 38
Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 38, with 86% women.
Dr. 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 38
Patient panel by sex, all payers
- Women86%
- Men13%
Source: Dmand AI Patient Panel Data
Dr. Eric Chang wrote 33 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 33 Medicare Part D claims. 100% of them were for generic drugs.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Eric Chang received $4,139 in industry payments from 2016 to 2025
CMS Open Payments shows 138 general payments to Dr. Chang from 25 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 79% of the total. Ferring Pharmaceuticals Inc. paid the most, $679.
General payments to Dr. Chang by program year, 2016 to 2025
General payments to Dr. Chang by kind, 2016 to 2025
- Food and beverage$3,26879%
- Speaker and faculty fees$67516%
- Education$1965%
Companies that paid Dr. Chang the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. 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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (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 Dr. 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 Dr. Eric Chang's NPI number?
Dr. Eric Chang's NPI number is 1538321203. It was assigned on June 25, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Eric Chang?
Dr. Eric Chang is a gynecology physician in Buffalo, New York. The primary specialty in the NPI Registry is Gynecology Physician (taxonomy code 207VG0400X).
Where does Dr. Eric Chang practice?
Dr. Chang practices at 835 Hopkins Rd, Buffalo, NY 14221. Dr. Chang's primary practice is CNY Fertility Center in Buffalo, New York.
What is Dr. Eric Chang's office phone number?
The practice phone on file for Dr. Chang is (315) 469-8700.
What is Dr. Eric Chang's medical license number?
Dr. Chang holds New York license 301263, one of the licenses on file in 2 states.
Which states has Dr. Eric Chang been licensed in?
Dmand AI has state licenses on file for Dr. Chang in New York and New Jersey.
Has Dr. Eric Chang received payments from drug or device companies?
CMS Open Payments shows $4,139 in general payments to Dr. Chang from 25 companies from 2016 to 2025. The largest total came from Ferring Pharmaceuticals Inc.
How long has Dr. Eric Chang been practicing?
Dr. Chang's NPI was assigned in 2008.
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