John Gerard Oster, MD
Ophthalmology Physician · Grand Junction, CO
John Gerard Oster, MD is an ophthalmology physician with a practice address in Grand Junction, Colorado, and NPI 1295775195, issued on Jun 8, 2006. Check the license (Colorado 35363, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- John Gerard Oster
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 35363 CO
Self-reported in NPPES; status is on the state search - Practice location
- 2472 Patterson RD, Grand Junction, CO 81505
- Phone
- (970) 424-5555
- Enumerated
- Jun 8, 2006
- Record last updated
- Apr 12, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (970) 424-5027
- Medicaid ID
- 01353630 CO
- Medicare enrollment
- Enrolled (PECOS I20100114000689); accepts Medicare assignment
- Medical or professional school
- Albany Medical College Of Union University, 1991
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 338 in Colorado → Look up another NPI →
Also registered at 2472 Patterson RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tracy Miller, O.D.Optometrist1760560205
Verify John Gerard Oster in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 35363Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% fewer Medicare Part D claims than the average ophthalmology physician in 2024
624 Medicare Part D claims for 140 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims.
Most prescribed
- Prednisolone Acetate124 claims
- Ofloxacin115 claims
- Ketorolac Tromethamine108 claims
- Latanoprost51 claims
- Neomycin-Polymyxin-Dexameth38 claims
- Brimonidine Tartrate30 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 MIPS final score for 2023 (Medicare payment program): 91.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
John Gerard Oster among 338 ophthalmology physician records in Colorado
John Gerard Oster, MD is one of 338 ophthalmology physician records with a practice address in Colorado. 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 2006, is newer than 20% of them.
- NPI issued2006 · 20% of these records are older, 45% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1991 · median 2001 among the 199 with a school on file
- Record last updated2010 · 64% 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 Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Colorado
There are 338 ophthalmology physician records in Colorado.
All 338 in Colorado → Every provider in Grand Junction → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Tracy Carter, D.O.Grand Junction, CO 815051922235258
- Gregory Kellam, MDGrand Junction, CO 815051548373343
- William Waterhouse, MDGrand Jct, CO 815051275536138
- Denis Campbell, MDGrand Junction, CO 815061417160896
- Deborah Lenahan, MDGrand Junction, CO 815061275646077
- Jerry Bush, MDGrand Junction, CO 815011457464257
- James Fox, M.D.Grand Junction, CO 815011295997351
- Jonathan Harder, D.O.Grand Junction, CO 815011316150287
Common questions
What is John Gerard Oster, MD's NPI number?
John Gerard Oster, MD's National Provider Identifier (NPI) is 1295775195, issued on Jun 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Gerard Oster, MD located?
The NPPES record lists a practice address at 2472 Patterson RD, Grand Junction, CO, 81505. Phone: (970) 424-5555. Providers update this record themselves, so call before visiting.
How can I verify John Gerard Oster, MD's license?
NPPES lists Colorado license number 35363, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Gerard Oster, MD prescribe under Medicare Part D?
In 2024, John Gerard Oster, MD had 624 Medicare Part D claims for 140 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is John Gerard Oster, MD's MIPS final score?
The 2023 MIPS final score is 91.2 of 100. 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.