Millie Chang, OD
- Medicare patients, 2024
- 101
- Part D claims, 2024
- 50
- MIPS score, 2024
- 83
- Industry payments
- $23
- Affiliated sites
- 5
- Practice address
- 6430 Rockledge Drive Suite 160, Bethesda, MD 20817
- Practice phone
- Call (571) 233-3292
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Advanced Surgery Center of Bethesda
Surgery Center - Medicare-Certified · Bethesda, Maryland
Find Millie 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.
Millie Chang is an optometrist in Bethesda, Maryland
Millie Chang practices at Advanced Surgery Center of Bethesda in Bethesda, Maryland.
Millie Chang's NPI, 1285048629, was assigned on June 13, 2014. Millie Chang graduated from State University of New York - State College Optometry in 2014. Millie Chang holds Virginia license 0618002342.
- NPI
- 1285048629NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3577782408
- NPI enumeration date
- June 13, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (571) 233-3292
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Millie Chang practices at Advanced Surgery Center of Bethesda in Bethesda, Maryland
Millie Chang's primary practice is Advanced Surgery Center of Bethesda, at 6430 Rockledge Drive Suite 160, Bethesda, MD 20817. The practice phone is (571) 233-3292.
- Advanced Surgery Center of Bethesda6430 Rockledge Drive Suite 160, Bethesda, MD 20817Phone(571) 233-3292
Source: Dmand AI Affiliation Data
Millie Chang is affiliated with 5 sites of care and 3 medical groups
Millie Chang's primary practice is Advanced Surgery Center of Bethesda in Bethesda, Maryland. The medical group on file is Johns Hopkins University. Dmand AI also links Millie Chang to 3 more group practices and clinics, 2 medical groups 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 Millie Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Millie Chang practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Advanced Surgery Center of Bethesda | Available with a free account |
| +4 more sites and 2 medical groups | 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.
Millie Chang is one of 562 optometrists in Maryland
Optometrist is Millie Chang's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Dmand AI has Millie Chang's licenses on file in 2 states: Virginia and Maryland.
Specialties and state licenses
- Optometrist, VirginiaPrimary
- Maryland license
Optometrists near Millie 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
Millie Chang treated 101 Medicare patients in 2024, average age 77
CMS counts 101 Medicare patients who saw Millie Chang in 2024. The largest group is 75 to 84, with 49 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 0.99, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Millie Chang's median patient age at 65, with 64% women.
Millie Chang's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Millie Chang's Medicare patients by sex, 2024
- Women5756%
- Men4444%
Chronic conditions among Millie Chang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis51%
- Diabetes30%
- Ischemic heart disease27%
- Mood disorders22%
- Cancer21%
- Depression20%
Share of Medicare patients with each condition. A patient can have several.
Millie 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 65
Patient panel by sex, all payers
- Women64%
- Men36%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Millie Chang wrote 50 Medicare Part D claims in 2024
In 2024, Millie Chang wrote 50 Medicare Part D claims for 19 patients. 48% of them were for generic drugs.
Millie Chang's Part D claims by kind of drug, 2024
- Generic24 claims48%
- Brand-name26 claims52%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Millie Chang scored 83 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 83 out of 100 for Millie Chang for performance year 2024, reported as part of a group. Millie Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Millie Chang's MIPS scores, performance year 2024
- 83of 100Final score
- 73.9of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 70of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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.
Millie Chang received $23 in industry payments in 2025
CMS Open Payments shows 1 general payment to Millie Chang from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Oyster Point Pharma, Inc. paid the most, $23.
Companies that paid Millie 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
Millie Chang graduated from State University of New York - State College Optometry
Millie Chang graduated from State University of New York - State College Optometry in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Millie 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)Clinician Public Reporting: Overall MIPS Performance (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 Millie 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 Millie Chang's NPI number?
Millie Chang's NPI number is 1285048629. It was assigned on June 13, 2014, and it is active in the NPI Registry.
What does Millie Chang specialize in?
Millie Chang is an optometrist in Bethesda, Maryland. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Millie Chang practice?
Millie Chang practices at 6430 Rockledge Drive Suite 160, Bethesda, MD 20817. Millie Chang's primary practice is Advanced Surgery Center of Bethesda in Bethesda, Maryland. Dmand AI also links Millie Chang to 3 group practices and clinics, 2 medical groups and 1 ambulatory surgery center.
What is Millie Chang's office phone number?
The practice phone on file for Millie Chang is (571) 233-3292.
What is Millie Chang's medical license number?
Millie Chang holds Virginia license 0618002342, one of the licenses on file in 2 states.
Which states has Millie Chang been licensed in?
Dmand AI has state licenses on file for Millie Chang in Virginia and Maryland.
What medical group is Millie Chang part of?
Millie Chang is linked to Johns Hopkins University. Dmand AI links Millie Chang to 2 more medical groups.
Does Millie Chang accept Medicare?
Yes. CMS lists Millie Chang as accepting Medicare assignment.
What is Millie Chang's MIPS score?
Millie Chang's MIPS final score for performance year 2024 is 83 out of 100, reported as part of a group.
How many Medicare patients does Millie Chang see?
CMS counts 101 Medicare patients who saw Millie Chang in 2024, with an average age of 77.
Show 3 more questionsShow fewer questions
Where did Millie Chang go to medical school?
Millie Chang graduated from State University of New York - State College Optometry in 2014.
Has Millie Chang received payments from drug or device companies?
CMS Open Payments shows $23 in general payments to Millie Chang from 1 company from 2025 to 2025. The largest total came from Oyster Point Pharma, Inc.
How long has Millie Chang been practicing?
Millie Chang graduated from medical school in 2014, 12 years ago.
Selling to optometrist practices?
See optometrists in Maryland 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