Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Elizabeth Chen Chiang, MD, PHD

Individual provider Ophthalmology Physician · NPI 1336464882

Dr. Elizabeth Chen Chiang, MD, PHD practises Ophthalmology in Sioux Falls, South Dakota. Qualified in 2010, 16 years ago. Practices with Summa Physicians LLC, a 688-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois, South Dakota and Virginia.

Years since qualifying
16
Licensed in
IL, SD, VA
In the registry since
2010
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

6601 S Minnesota Ave Ste 200
Sioux Falls, SD 57108
Phone: (605) 336-6294
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 8921 N Wood Sage Rd, Peoria, IL 61615-7822 — (309) 243-3849

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence 15656 (SD)
Ophthalmology Physician Taxonomy 207W00000X · Licence 0101259867 (VA)
Ophthalmology Physician Taxonomy 207W00000X · Licence 036161362 (IL)

Record details

NPI number1336464882
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedMarch 28, 2010
Last updated in NPPESOctober 28, 2024
Certification dateOctober 4, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOPHTHALMOLOGY
Medical schoolOTHER
Graduated 2010 (16 years in practice)
Group practice Summa Physicians Llc — 688 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Melanoma (skin cancer) excision 1–10 times
Removal or shaving of skin growth 1–10 times
Skin biopsy 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients176
Services billed 370 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $700 8 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Summa Health System Hospital · Akron, OH

Colleagues at Summa Physicians LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 688 clinicians in the practice; 12 are shown here.

Other providers in Sioux Falls