NPPES file of Aug 9, 2026

Retina Specialist (Ophthalmology) Physician in Iowa

11 NPPES records list retina specialist (ophthalmology) physician with a practice address in Iowa, 0.3 per 100,000 residents, the 34th highest rate of 48. West Des Moines and Iowa City have the most; each record links to the provider's NPI and the Iowa license search.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207WX0107X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

West Des Moines has the most, 6

  1. West Des Moines6
  2. Iowa City3
  3. Des Moines1
  4. Sioux City1

Retina Specialist (Ophthalmology) Physician records in Iowa

  1. Riley Bylund, MDWest Des Moines, IA 502661336791045
  2. Cory Christensen, DO, MPHWest Des Moines, IA 502661952044877
  3. Beau Fenner, MDIowa City, IA 522421861124943
  4. Justin Grassmeyer, MDIowa City, IA 522421780262675
  5. Christopher Haupert, MDWest Des Moines, IA 502661780652800
  6. David Massop, MDDes Moines, IA 503091003267956
  7. Mohammad Sabbagh, MDSioux City, IA 511061386201549
  8. James Singer, DOWest Des Moines, IA 502661427369107
  9. Austin Strohbehn, MDWest Des Moines, IA 502661629482468
  10. Samuel Tadros, MDIowa City, IA 522421326786005
  11. Sushant Wagley, MDWest Des Moines, IA 502661225481351

Source: CMS NPPES, primary taxonomy 207WX0107X: records by practice city and the list of records, file of Aug 9, 2026.

Iowa ranks 34 of 48 per resident

  1. South Carolina0.4
  2. New Jersey0.4
  3. Texas0.4
  4. Iowa0.3
  5. South Dakota0.3
  6. Indiana0.3
  7. 50 states and D.C.0.5

Source: CMS NPPES, primary taxonomy 207WX0107X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

90.9% of these records appear in a Medicare file, against 94.9% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. Iowa90.9%
  2. United States94.9%

Retina Specialist (Ophthalmology) Physician records in Iowa, measured

  • In a Medicare file10 of 11 · 90.9% here, 94.9% nationally
  • In the CMS Doctors and Clinicians file8 · 72.7% here, 89.1% nationally
  • Not updated in five years or more3 · 27.3% here, 42.0% nationally

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207WX0107X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

11 NPPES records list retina specialist (ophthalmology) physician (207WX0107X) as their primary taxonomy with a practice address in Iowa: 0.3 per 100,000 residents against 0.5 nationally (50 states and D.C.). West Des Moines has 6 of them (55%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. Mississippi12
  2. Kansas13
  3. Nevada13
  4. Connecticut14

States with a similar rate per 100,000

  1. Texas0.4
  2. New Jersey0.4
  3. South Carolina0.4
  4. Indiana0.3

The largest states

  1. California205
  2. Florida123
  3. Texas107
  4. New York102
  5. Ohio76

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.