Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mark A Greiner, MD

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1194992958

Mark A Greiner, MD is an Ophthalmology in Iowa City, Iowa. Graduated from University of California, Davis School of Medicine in 2007, 19 years ago. Practices with State University of Iowa, a 1,885-clinician group and accepts Medicare assignment. Licensed in Iowa.

Years since qualifying
19
Trained at
University of California, Davis School of Medicine
Licensed in
IA
In the registry since
2008
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) 356-2861
Fax: (319) 356-0363
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence 40489 (IA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1194992958
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 12, 2008
Last updated in NPPESAugust 16, 2012

Medicare enrollment

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

Medicare specialtyOPHTHALMOLOGY
Medical schoolUNIVERSITY OF CALIFORNIA, DAVIS SCHOOL OF MEDICINE
Graduated 2007 (19 years in practice)
Group practice State University Of Iowa — 1885 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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