DEREK P BITNER (M.D.) – Ophthalmology Physician, NPI 1134414709
Ophthalmology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
235 OPHTHALMOLOGY in IA
Provider Addresses for DEREK P BITNER (M.D.)
309 E CHURCH ST
MARSHALLTOWN, IA 501582946
Phone: (641) 754-6200
Fax: (641) 754-6245
Type: Mailing
6200 WESTOWN PKWY
WEST DES MOINES, IA 502667705
Phone: (515) 223-8685
Fax: (515) 223-5468
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 4 Open Payments records for all available years, with a total value of $145.
Total Amount is formed as General ($145) + Research ($0) + Ownership ($0) = $145.
Last reported payment date: 2024-08-21 • Largest payer in this snapshot: Horizon Therapeutics plc ($125).
Total Amount
$145
General + Research + Ownership
Payments
4
Total payment records
General Amount
$145
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
2
Ownership records
Last Payment Date
2024-08-21
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Horizon Therapeutics plc | $125 |
| RxSight Inc | $20 |
| US Retina LLC | $0 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2016-05-31
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20160531000465 | I | Ophthalmology | IA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 177 | 143 | $0 |
| 92060 | Exam to measure eye deviation and range of motion | 162 | 161 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 61 | 58 | $0 |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | 60 | 60 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 22 | 22 | $0 |
Insurance plans in this area (ZIP 50158)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| O P H T H A L M O L O G Y | IA | |
| - | IA | |
| O P H T H A L M O L O G Y | TX | |
| - | IA | |
| - | IA | |
| O P H T H A L M O L O G Y | IA | |
| Qualified Audiologist | IA | |
| O P H T H A L M O L O G Y | IL | |
| Physician Assistant | IA | |
| - | IA |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.