Aaron Christopher Oberster, OD
- Medicare patients, 2024
- 106
- Part D claims, 2024
- 204
- Hospital affiliations
- 1
- Industry payments
- $15
- Medical group
- 1
- Practice address
- 300 South Bruce Street, Marshall, MN 56258
- Practice phone
- Call (507) 537-9661
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Aaron Oberster'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.
Aaron Christopher Oberster is an optometrist in Marshall, Minnesota
Aaron Oberster practices at Avera Marshall Regional Medical Center in Marshall, Minnesota, part of Avera Health.
Aaron Oberster's NPI, 1760167779, was assigned on June 19, 2023. Aaron Oberster holds Minnesota license 3876.
- NPI
- 1760167779NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0547620478
- NPI enumeration date
- June 19, 2023
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (507) 537-9661
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 29
- Medical school graduation
- 2023
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Aaron Christopher Oberster practices at Avera Marshall Regional Medical Center in Marshall, Minnesota
Aaron Oberster's primary practice is Avera Marshall Regional Medical Center, at 300 South Bruce Street, Marshall, MN 56258 in Lyon County. The practice phone is (507) 537-9661.
- Avera Marshall Regional Medical Center300 South Bruce Street, Marshall, MN 56258 · Lyon CountyPhone(507) 537-9661
Source: Dmand AI Affiliation Data
Aaron Christopher Oberster is affiliated with 4 sites of care and 1 medical group
Aaron Oberster's primary practice is Avera Marshall Regional Medical Center in Marshall, Minnesota, part of Avera Health. The medical group on file is Avera Marshall Regional Medical Center. Dmand AI also links Aaron Oberster to 1 more breast imaging center, 1 home health agency and 1 hospice, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Aaron Christopher Oberster's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Aaron Oberster practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Avera Marshall Regional Medical Center | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Avera Health and 6.2K+ hospitals, with verified contacts in the same login.
Aaron Christopher Oberster is one of 1,006 optometrists in Minnesota
Optometrist is Aaron Oberster's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Aaron Oberster is licensed in Minnesota.
Specialties and state licenses
- Optometrist, MinnesotaPrimary
Optometrists near Aaron Oberster
Counts of optometrists 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
Aaron Christopher Oberster treated 106 Medicare patients in 2024, average age 76
CMS counts 106 Medicare patients who saw Aaron Oberster in 2024. The largest group is 65 to 74, with 39 patients. 67% of them have high blood pressure, and 59% have high cholesterol. 10% are also on Medicaid. Their average risk score is 1.00, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Aaron Oberster's median patient age at 60, with 55% women.
Aaron Oberster's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Aaron Oberster's Medicare patients by sex, 2024
- Women5552%
- Men5148%
Chronic conditions among Aaron Oberster's Medicare patients, 2024
- High blood pressure67%
- High cholesterol59%
- Arthritis42%
- Chronic kidney disease28%
- Diabetes18%
- Cancer17%
- Anxiety16%
- Atrial fibrillation16%
Share of Medicare patients with each condition. A patient can have several.
Aaron Oberster's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Aaron Christopher Oberster wrote 204 Medicare Part D claims in 2024
In 2024, Aaron Oberster wrote 204 Medicare Part D claims for 72 patients. 77% of them were for generic drugs.
Aaron Oberster's Part D claims by kind of drug, 2024
- Generic158 claims77%
- Brand-name46 claims23%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Aaron Christopher Oberster takes part in Medicare
Aaron Oberster accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Aaron Christopher Oberster received $15 in industry payments in 2025
CMS Open Payments shows 1 general payment to Aaron Oberster from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Johnson & Johnson Vision Care, Inc. paid the most, $15.
Companies that paid Aaron Oberster the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Aaron Christopher Oberster'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| 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 (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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Aaron Christopher Oberster
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Aaron Christopher Oberster's NPI number?
Aaron Christopher Oberster's NPI number is 1760167779. It was assigned on June 19, 2023, and it is active in the NPI Registry.
What does Aaron Christopher Oberster specialize in?
Aaron Christopher Oberster is an optometrist in Marshall, Minnesota. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Aaron Christopher Oberster practice?
Aaron Oberster practices at 300 South Bruce Street, Marshall, MN 56258. Aaron Oberster's primary practice is Avera Marshall Regional Medical Center in Marshall, Minnesota, part of Avera Health. Dmand AI also links Aaron Oberster to 1 breast imaging center, 1 home health agency and 1 hospice.
What is Aaron Christopher Oberster's office phone number?
The practice phone on file for Aaron Oberster is (507) 537-9661.
What is Aaron Christopher Oberster's medical license number?
Aaron Oberster holds Minnesota license 3876.
Which hospitals is Aaron Christopher Oberster affiliated with?
Aaron Oberster practices at Avera Marshall Regional Medical Center in Marshall, Minnesota.
What medical group is Aaron Christopher Oberster part of?
Aaron Oberster is linked to Avera Marshall Regional Medical Center.
Does Aaron Christopher Oberster accept Medicare?
Yes. CMS lists Aaron Oberster as accepting Medicare assignment.
How many Medicare patients does Aaron Christopher Oberster see?
CMS counts 106 Medicare patients who saw Aaron Oberster in 2024, with an average age of 76.
Has Aaron Christopher Oberster received payments from drug or device companies?
CMS Open Payments shows $15 in general payments to Aaron Oberster from 1 company from 2025 to 2025. The largest total came from Johnson & Johnson Vision Care, Inc.
How long has Aaron Christopher Oberster been practicing?
Aaron Oberster graduated from medical school in 2023, 3 years ago.
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