Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Justin Grassmeyer, MD

Individual provider Ophthalmology Physician · NPI 1780262675

Justin Grassmeyer, MD practises Ophthalmology in Iowa City, Iowa. Graduated from University of Nebraska College of Medicine in 2021, 5 years ago. Practices with State University of Iowa, a 1,885-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Iowa.

Years since qualifying
5
Trained at
University of Nebraska College of Medicine
Licensed in
IA
In the registry since
2021
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

200 Hawkins Dr
Iowa City, IA 52242-1009
Phone: (319) 356-3705
Fax: (319) 353-6030
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 105 E 9th St, Coralville, IA 52241-2209 — (319) 356-3705

Specialties & licences

Retina Specialist (Ophthalmology) Physician (primary) Taxonomy 207WX0107X · Licence MD-54563 (IA)
Ophthalmology Physician Taxonomy 207W00000X · Licence MD-54563 (IA)

Record details

NPI number1780262675
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 31, 2021
Last updated in NPPESJuly 8, 2025
Certification dateJuly 8, 2025

Medicare enrollment

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

Medicare specialtyOPHTHALMOLOGY
Medical schoolUNIVERSITY OF NEBRASKA COLLEGE OF MEDICINE
Graduated 2021 (5 years in practice)
Group practice State University Of Iowa — 1885 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 $66 2 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.

Colleagues at State University of Iowa

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1885 clinicians in the practice; 12 are shown here.

Other providers in Iowa City