DAVID JOHN MASSOP (MD) – Internal Medicine Physician, NPI 1003267956
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
235 OPHTHALMOLOGY in IA
Loading map...
Provider Addresses for DAVID JOHN MASSOP (MD)
Iowa Methodist Parking Garage, 1415, Woodland Avenue, Western Gateway, Des Moines, Polk County, Iowa, 50314, United States
SUITE 140
DES MOINES, IA 503093203
Phone: (515) 241-8595
Fax: (515) 241-4080
Type: Mailing
309 E CHURCH ST
MARSHALLTOWN, IA 501582946
Phone: (641) 754-6262
Fax: (641) 754-6215
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 16 Open Payments records for all available years, with a total value of $948.
Total Amount is formed as General ($948) + Research ($0) + Ownership ($0) = $948.
Last reported payment date: 2024-10-15 • Largest payer in this snapshot: Dutch Ophthalmic, USA ($313).
Total Amount
$948
General + Research + Ownership
Payments
16
Total payment records
General Amount
$948
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-15
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2020-05-27
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 |
|---|---|---|---|---|
| I20200527000203 | 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 |
|---|---|---|---|---|
| J2777 | Injection, faricimab-svoa, 0.1 mg | 86,040 | 334 | $0 |
| 92134 | Imaging of retina | 2,745 | 985 | $0 |
| 67028 | Injection of drug into eye | 2,115 | 581 | $0 |
| J2778 | Injection, ranibizumab, 0.1 mg | 1,376 | 108 | $0 |
| J0178 | Injection, aflibercept, 1 mg | 1,000 | 162 | $0 |
Insurance plans in this area (ZIP 50309)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | 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 | |
| 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.