Colin Michael Ridenour, MD
Ophthalmology Physician · Warsaw, IN
Colin Michael Ridenour, MD is an ophthalmology physician with a practice address in Warsaw, Indiana, and NPI 1457888430, issued on May 22, 2017. Check the license (Indiana 01085874A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- Colin Michael Ridenour
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License numbers
- 01085874A IN
11019222A IN
Self-reported in NPPES; status is on the state search - Practice location
- 2251 Dubois Dr, Warsaw, IN 46580
- Phone
- (574) 269-2777
- Enumerated
- May 22, 2017
- Record last updated
- Nov 9, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (574) 269-9828
- Medicare enrollment
- Enrolled (PECOS I20210604000869); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 311 in Indiana → Look up another NPI →
Also registered at 2251 Dubois Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marilene Beardslee, C.R.N.A.Certified Registered Nurse Anesthetist1801902440
- Ann Buikema Wiarda, MDOphthalmology Physician1538146246
- Bruce Grossnickle, M.D.Ophthalmology Physician1518960921
- Kevin Hickman, O.D.Optometrist1609879030
- Andrew JankowskiOptometrist1619544541
- Christopher Knight, M.D.Ophthalmology Physician1659374205
Verify Colin Michael Ridenour in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01085874ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% more Medicare Part D claims than the average ophthalmology physician in 2024
2,689 Medicare Part D claims for 564 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Latanoprost1,012 claims
- Dorzolamide-Timolol571 claims
- Timolol Maleate246 claims
- Brimonidine Tartrate123 claims
- Prednisolone Acetate97 claims
- Lumigan83 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 93.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $393.11
12 payments; by number, the most common kind was food and beverage; the largest payer was Sight Sciences, Inc. The 13,221 providers of this specialty with any payment received $4,535.02 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
- Grossnickle Eye Center IncWarsaw, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Colin Michael Ridenour among 311 ophthalmology physician records in Indiana
Colin Michael Ridenour, MD is one of 311 ophthalmology physician records with a practice address in Indiana. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 89% of them.
- NPI issued2017 · 89% of these records are older, 8% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2017 · median 2000 among the 197 with a school on file
- Record last updated2021 · 61% 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 Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 ophthalmology physician records list a practice address in Warsaw
They are 7 of the 607 NPPES records with a practice address in Warsaw, and 311 ophthalmology physician records in Indiana.
All 311 in Indiana → Every provider in Warsaw → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Ann Buikema Wiarda, MDWarsaw, IN 465801538146246
- Bruce Grossnickle, M.D.Warsaw, IN 465801518960921
- Christopher Knight, M.D.Warsaw, IN 465801659374205
- Allison Pernic, M.D.Warsaw, IN 465801497070957
- Matthew Ralstin, M.D.Warsaw, IN 465801104088731
- David Ryser, M.D.Warsaw, IN 465801528061363
- Steve Gerber, M.D.South Bend, IN 466011073598835
- Bruce Schwartz, M.D.South Bend, IN 466011497730261
Common questions
What is Colin Michael Ridenour, MD's NPI number?
Colin Michael Ridenour, MD's National Provider Identifier (NPI) is 1457888430, issued on May 22, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Colin Michael Ridenour, MD located?
The NPPES record lists a practice address at 2251 Dubois Dr, Warsaw, IN, 46580. Phone: (574) 269-2777. Providers update this record themselves, so call before visiting.
How can I verify Colin Michael Ridenour, MD's license?
NPPES lists Indiana license number 01085874A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Colin Michael Ridenour, MD prescribe under Medicare Part D?
In 2024, Colin Michael Ridenour, MD had 2,689 Medicare Part D claims for 564 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Colin Michael Ridenour, MD's MIPS final score?
The 2023 MIPS final score is 93.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.