Dr. Grennan is on Doximity
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Office
4353 Dodge St
Omaha, NE 68131Phone+1 402-552-2020Fax+1 402-552-2367
Education & Training
University of Nebraska Medical Center College of MedicineResidency, Ophthalmology, 2000 - 2003- University of Nebraska Medical Center College of MedicineResidency, Internal Medicine, 1999 - 2002
University of Nebraska College of MedicineClass of 1999
Certifications & Licensure
IA State Medical License 2003 - 2026
NE State Medical License 2003 - 2026- American Board of Ophthalmology Ophthalmology
Awards, Honors, & Recognition
- Meaningful Use Stage 1 Certification Centers for Medicare & Medicaid Services, 2012
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