Physician Profile
Unclaimed ProfileAbout GREINER
Mark A Greiner, M.D. is a healthcare provider in Iowa City, IA specializing in ophthalmology. Mark trained at University of California, Davis School of Medicine, graduating in 2007. Mark is also listed as specializing in student in an organized health care education program. According to Medicare claims data, Mark cared for 1,599 Medicare patients across 2,031 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (319) 356-2861
- Email not available
Practice Locations
200 HAWKINS DR
Iowa City, IA 52242
Procedures Most Often Billed to Medicare
2,031 services · 1,599 patients · 16 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Transplantation of outer layer of corneal tissue | Procedure | 65756 |
62 |
| Removal of cataract with insertion of prosthetic lens | Procedure | 66984 |
41 |
| Removal of cataract with insertion of prosthetic lens | Procedure | 66984 |
29 |
| Ultrasound scan of cornea to determine thickness | Imaging | 76514 |
568 |
| Imaging of front third of eye using a special microscope | Treatment | 92286 |
186 |
| Ct scan of cornea | Treatment | 92025 |
180 |
| Photography of content of eyes | Treatment | 92285 |
54 |
| Established patient complete exam of visual system | Treatment | 92014 |
53 |
| Measurement of corneal curvature and depth of eye | Treatment | 92136 |
51 |
| Imaging of retina | Treatment | 92134 |
40 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other ophthalmology specialists in Iowa City 8
Same specialty, same city.
Trained at University of California, Davis School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 2007 at University of California, Davis School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Transplantation of outer layer of corneal tissue 8
Providers in IA who bill this service to Medicare most often.
Common questions
What is Dr. Greiner's specialty?
Dr. Greiner is an ophthalmology in Iowa City, IA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “OPHTHALMOLOGY”.
NPI registry
Where can I find Dr. Greiner?
Dr. Greiner is listed at 200 HAWKINS DR, Iowa City, IA 52242. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Greiner?
The number on file is (319) 356-2861. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Greiner's NPI number?
Dr. Greiner's National Provider Identifier is 1194992958. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Greiner's medical education?
Dr. Greiner attended University of California, Davis School of Medicine, graduating in 2007. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Greiner been practicing?
Dr. Greiner has 19 years experience. Calculated from a graduation year of 2007, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Greiner known for?
According to Medicare billing data, Dr. Greiner performs procedures including transplantation of outer layer of corneal tissue and removal of cataract with insertion of prosthetic lens; reads or performs imaging such as ultrasound scan of cornea to determine thickness; provides treatments such as imaging of front third of eye using a special microscope and ct scan of cornea, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Greiner confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Greiner. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.