Dr. John Gerard Oster, MD
- Medicare services, 2024
- 548
- Medicare patients, 2024
- 194
- Part D claims, 2024
- 624
- MIPS score, 2024
- 91
- Industry payments
- $154
- Practice address
- 2472 Patterson Rd, Grand Junction, CO 81505
- Practice phone
- Call (970) 424-5555
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
John G Oster MD
Grand Junction, Colorado
Find Dr. Oster's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. John Gerard Oster is an ophthalmologist in Grand Junction, Colorado
Dr. Oster practices at John G Oster MD in Grand Junction, Colorado.
Dr. Oster's NPI, 1295775195, was assigned on June 8, 2006. Dr. Oster graduated from Albany Medical College of Union University in 1991. Dr. Oster holds Colorado license 35363.
- NPI
- 1295775195NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6204978109
- NPI enumeration date
- June 8, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (970) 424-5555
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Gerard Oster practices at John G Oster MD in Grand Junction, Colorado
Dr. Oster's primary practice is John G Oster MD, at 2472 Patterson Rd, Grand Junction, CO 81505 in Mesa County. The practice phone is (970) 424-5555.
- John G Oster MD2472 Patterson Rd, Grand Junction, CO 81505 · Mesa CountyPhone(970) 424-5555
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John Gerard Oster is affiliated with 2 sites of care
Dr. Oster's primary practice is John G Oster MD in Grand Junction, Colorado. Dmand AI also links Dr. Oster to 1 physician office, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. John Gerard Oster's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Oster practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| John G Oster MD | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Gerard Oster is one of 258 ophthalmologists in Colorado
Ophthalmology is Dr. Oster's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Oster is licensed in Colorado.
Specialties and state licenses
- Ophthalmology, ColoradoPrimary
Ophthalmologists near Dr. Oster
Counts of ophthalmologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John Gerard Oster billed Medicare for 548 services in 2024
CMS data shows 548 Medicare services from Dr. Oster across 8 procedure codes in 2024, for 194 Medicare patients. Medicare paid $73,751 for them.
Dr. Oster's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2472024: 2532%
- Surgery
- 2023: 1272024: 1252%
- Imaging
- 2023: 982024: 12022%
- Tests and treatments
- 2023: 422024: 5019%
Where Dr. Oster's Medicare services took place, 2024
- In an office49290%
- In a facility5610%
Dr. Oster compared with the Colorado median for ophthalmologists, 2024
- Dr. Oster
- Colorado median
- Medicare services
- 548vs 1,22955% below
- Medicare patients
- 194vs 53864% below
- Part D claims
- 553vs 46619% above
Medians across 266 ophthalmologists in Colorado with Dmand AI profiles that report each measure.
Dr. Oster's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Oster?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Oster and other ophthalmologists in Colorado.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Gerard Oster treated 194 Medicare patients in 2024, average age 74
CMS counts 194 Medicare patients who saw Dr. Oster in 2024. The largest group is 65 to 74, with 101 patients. 62% of them have high blood pressure, and 52% have high cholesterol. 6% are also on Medicaid. Their average risk score is 0.86, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Oster's median patient age at 74, with 52% women.
Dr. Oster's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Oster's Medicare patients by sex, 2024
- Women11057%
- Men8443%
Chronic conditions among Dr. Oster's Medicare patients, 2024
- High blood pressure62%
- High cholesterol52%
- Arthritis40%
- Diabetes20%
- Mood disorders19%
- Depression17%
- Cancer14%
- Chronic kidney disease14%
Share of Medicare patients with each condition. A patient can have several.
Dr. Oster's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Gerard Oster wrote 624 Medicare Part D claims in 2024
In 2024, Dr. Oster wrote 624 Medicare Part D claims for 140 patients. 68% of them were for generic drugs. CMS names the drug for 553 of them, across 12 drugs with 11 or more claims each, at $20,020 in total drug cost. In 2023, CMS named 602 claims across 14 drugs.
Dr. Oster's Part D claims by kind of drug, 2024
- Generic424 claims68%
- Brand-name200 claims32%
Dr. Oster's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Oster's Part D claims, 2024
- Antibiotics3%18 of 624 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6022024: 5538%
Drugs named by CMS: 12 in 2024, 14 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. John Gerard Oster scored 91 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for Dr. Oster for performance year 2024, reported individually. Dr. Oster accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 115 procedures of cataract surgery by Dr. Oster, more than 76% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Oster's MIPS scores, performance year 2024
- 91of 100Final score
- 82.1of 100Quality
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Oster ranks in Medicare procedure volume
- Cataract surgery
- 76th percentile115 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. John Gerard Oster received $154 in industry payments from 2018 to 2021
CMS Open Payments shows 8 general payments to Dr. Oster from 3 drug and device companies from 2018 to 2021. Food and beverage make up the largest share, 61% of the total. Alcon Laboratories Inc paid the most, $122.
General payments to Dr. Oster by program year, 2018 to 2021
General payments to Dr. Oster by kind, 2018 to 2021
- Food and beverage$9461%
- Education$6039%
Companies that paid Dr. Oster the most, 2018 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Gerard Oster graduated from Albany Medical College of Union University
Dr. Oster graduated from Albany Medical College of Union University in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Gerard Oster's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. John Gerard Oster
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. John Gerard Oster's NPI number?
Dr. John Gerard Oster's NPI number is 1295775195. It was assigned on June 8, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John Gerard Oster?
Dr. John Gerard Oster is an ophthalmologist in Grand Junction, Colorado. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. John Gerard Oster practice?
Dr. Oster practices at 2472 Patterson Rd, Grand Junction, CO 81505. Dr. Oster's primary practice is John G Oster MD in Grand Junction, Colorado. Dmand AI also links Dr. Oster to 1 physician office.
What is Dr. John Gerard Oster's office phone number?
The practice phone on file for Dr. Oster is (970) 424-5555.
What is Dr. John Gerard Oster's medical license number?
Dr. Oster holds Colorado license 35363.
Does Dr. John Gerard Oster accept Medicare?
Yes. CMS data shows Dr. Oster billed Medicare for 548 services in 2024, and Dr. Oster accepts Medicare assignment.
What is Dr. John Gerard Oster's MIPS score?
Dr. Oster's MIPS final score for performance year 2024 is 91 out of 100, reported individually.
How many Medicare patients does Dr. John Gerard Oster see?
CMS counts 194 Medicare patients who saw Dr. Oster in 2024, with an average age of 74.
What services does Dr. John Gerard Oster bill to Medicare?
In 2024, Dr. Oster's most billed Medicare services were ultrasound (76519), office visit, established patient (99215) and office visit, established patient (99214).
Where did Dr. John Gerard Oster go to medical school?
Dr. Oster graduated from Albany Medical College of Union University in 1991.
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What drugs does Dr. John Gerard Oster prescribe most?
In 2024 Medicare Part D data, Dr. Oster's most prescribed drugs by claims were Prednisolone Acetate, Ofloxacin and Ketorolac Tromethamine.
Has Dr. John Gerard Oster received payments from drug or device companies?
CMS Open Payments shows $154 in general payments to Dr. Oster from 3 companies from 2018 to 2021. The largest total came from Alcon Laboratories Inc.
How long has Dr. John Gerard Oster been practicing?
Dr. Oster graduated from medical school in 1991, 35 years ago.
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