John R. Trible, MD
Ophthalmology Physician · Marshalltown, IA
John R. Trible, MD is an ophthalmology physician with a practice address in Marshalltown, Iowa, and NPI 1104818939, issued on Aug 18, 2005. Check the license (Iowa 32730, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- John R. Trible
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 32730 IA
Self-reported in NPPES; status is on the state search - Practice location
- 309 E Church St, Marshalltown, IA 50158
- Phone
- (641) 754-6200
- Enumerated
- Aug 18, 2005
- Record last updated
- Feb 15, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (515) 223-5468
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 220 in Iowa → Look up another NPI →
Also registered at 309 E Church St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Catherine Dangelser, AUDAudiologist-Hearing Aid Fitter1831388305
- James Davison, MDOphthalmology Physician1104818996
- Denise Gimbel, ODOptometrist1740272574
- John Graether, MDOphthalmology Physician1902898794
- Christine Lindgren, DOInternal Medicine Physician1720169022
- Lindsey Powell, AUDAudiologist1477173961
Verify John R. Trible in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 32730Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average ophthalmology physician in 2024
30 Medicare Part D claims, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D.
Most prescribed
- Dorzolamide-Timolol13 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.
John R. Trible among 220 ophthalmology physician records in Iowa
John R. Trible, MD is one of 220 ophthalmology physician records with a practice address in Iowa. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 75% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 56% of these records are
- Record last updated2018 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Iowa
There are 220 ophthalmology physician records in Iowa.
All 220 in Iowa → Every provider in Marshalltown → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- James Davison, MDMarshalltown, IA 501581104818996
- John Graether, MDMarshalltown, IA 501581902898794
- Eric Zhang, MDMarshalltown, IA 501581952965493
- Beth Amspaugh, MDWest Des Moines, IA 502651861644817
- Elizabeth Brown, M.D.West Des Moines, IA 502651427018423
- David Dwyer, M.D.West Des Moines, IA 502651275593279
- Barbara Evans, MDWest Des Moines, IA 502651588627954
- Mohamed Hassan, MDWest Des Moines, IA 502651932550886
Common questions
What is John R. Trible, MD's NPI number?
John R. Trible, MD's National Provider Identifier (NPI) is 1104818939, issued on Aug 18, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John R. Trible, MD located?
The NPPES record lists a practice address at 309 E Church St, Marshalltown, IA, 50158. Phone: (641) 754-6200. Providers update this record themselves, so call before visiting.
How can I verify John R. Trible, MD's license?
NPPES lists Iowa license number 32730, 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 John R. Trible, MD prescribe under Medicare Part D?
In 2024, John R. Trible, MD had 30 Medicare Part D claims; the average among ophthalmology physician prescribers was 1,518. 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.