David John Massop, MD
Retina Specialist (Ophthalmology) Physician · Des Moines, IA
David John Massop, MD is a retina specialist (ophthalmology) physician with a practice address in Des Moines, Iowa, and NPI 1003267956, issued on Jun 22, 2016. Check the license (Iowa 47004, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- David John Massop
- Credential
- MD
- Primary taxonomy
- Retina Specialist (Ophthalmology) Physician 207WX0107X
- License number
- 47004 IA
Self-reported in NPPES; status is on the state search - Practice location
- 1415 Woodland Ave, Des Moines, IA 50309
- Phone
- (515) 241-8595
- Enumerated
- Jun 22, 2016
- Record last updated
- Apr 12, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (515) 241-4080
- Medicare enrollment
- Enrolled (PECOS I20200527000203); accepts Medicare assignment
- Medical or professional school
- Creighton University School Of Medicine, 2016
- Entity
- Type 1 · individual
8 nearest retina specialist (ophthalmology) physician records → All 11 in Iowa → Look up another NPI →
Also registered at 1415 Woodland Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Katrina Almeida, D.P.M.Podiatrist1063895860
- Ratna Boppana, MBBSInternal Medicine Physician1043574981
- Alex CatheyHospitalist Physician1407294317
- Dylan Crebs, MDInternal Medicine Physician1356791404
- Damon Demars, DOInternal Medicine Physician1063826758
Verify David John Massop in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 47004Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% fewer Medicare Part D claims than the average retina specialist (ophthalmology) physician in 2024
615 Medicare Part D claims for 213 beneficiaries, against an average of 620 among the 1,449 providers of this specialty who prescribed in Part D. Brand-name drugs were 45% of claims.
Most prescribed
- Prednisolone Acetate254 claims
- Moxifloxacin127 claims
- Dorzolamide-Timolol86 claims
- Latanoprost37 claims
- Brimonidine Tartrate26 claims
- Timolol Maleate19 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $739.59
11 payments; by number, the most common kind was food and beverage; the largest payer was Dutch Ophthalmic, USA. The 1,253 providers of this specialty with any payment received $7,667.49 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Wolfe Clinic IncSpencer, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David John Massop among 11 retina specialist (ophthalmology) physician records in Iowa
David John Massop, MD is one of 11 retina specialist (ophthalmology) physician records with a practice address in Iowa. 91% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 27% of them.
- NPI issued2016 · 27% of these records are older, 55% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Record last updated2021 · 27% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207WX0107X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Retina Specialist (Ophthalmology) Physician providers in Iowa
There are 11 retina specialist (ophthalmology) physician records in Iowa.
All 11 in Iowa → Every provider in Des Moines → Retina Specialist (Ophthalmology) Physician nationwide →
The 8 retina specialist (ophthalmology) physician records with the nearest ZIP codes
- Riley Bylund, MDWest Des Moines, IA 502661336791045
- Cory Christensen, DO, MPHWest Des Moines, IA 502661952044877
- Christopher Haupert, MDWest Des Moines, IA 502661780652800
- James Singer, DOWest Des Moines, IA 502661427369107
- Austin Strohbehn, MDWest Des Moines, IA 502661629482468
- Sushant Wagley, MDWest Des Moines, IA 502661225481351
- Mohammad Sabbagh, MDSioux City, IA 511061386201549
- Beau Fenner, MDIowa City, IA 522421861124943
Common questions
What is David John Massop, MD's NPI number?
David John Massop, MD's National Provider Identifier (NPI) is 1003267956, issued on Jun 22, 2016. An NPI identifies a provider in billing; it is not a license.
Where is David John Massop, MD located?
The NPPES record lists a practice address at 1415 Woodland Ave, Des Moines, IA, 50309. Phone: (515) 241-8595. Providers update this record themselves, so call before visiting.
How can I verify David John Massop, MD's license?
NPPES lists Iowa license number 47004, as entered by the provider. Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does David John Massop, MD prescribe under Medicare Part D?
In 2024, David John Massop, MD had 615 Medicare Part D claims for 213 beneficiaries; the average among retina specialist (ophthalmology) physician prescribers was 620. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it 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.