Dr. Gregory T. Olson, DO
- Medicare services, 2018
- 29
- Part D claims, 2021
- 145
- Hospital affiliations
- 1
- Industry payments
- $51
- State license
- 1
- Practice address
- 2501 West 22nd Street, Sioux Falls, SD 57117
- Practice phone
- Call (605) 336-3230
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Olson'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. Gregory T. Olson is a family medicine physician in Sioux Falls, South Dakota
Dr. Olson practices at Royal C. Johnson Veterans' Memorial Hospital in Sioux Falls, South Dakota, part of Veterans Health Administration.
Dr. Olson's NPI, 1174841795, was assigned on May 6, 2010. Dr. Olson holds Iowa license 4203.
- NPI
- 1174841795NPI Registry (opens in a new tab)
- NPI enumeration date
- May 6, 2010
- NPI status
- Active
- Practice phone
- (605) 336-3230
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Gregory T. Olson practices at Royal C. Johnson Veterans' Memorial Hospital in Sioux Falls, South Dakota
Dr. Olson's primary practice is Royal C. Johnson Veterans' Memorial Hospital, at 2501 West 22nd Street, Sioux Falls, SD 57117 in Minnehaha County. The practice phone is (605) 336-3230.
- Royal C. Johnson Veterans' Memorial Hospital2501 West 22nd Street, Sioux Falls, SD 57117 · Minnehaha CountyPhone(605) 336-3230
Source: Dmand AI Affiliation Data
Dr. Gregory T. Olson is affiliated with 1 site of care
Dr. Olson's primary practice is Royal C. Johnson Veterans' Memorial Hospital in Sioux Falls, South Dakota, part of Veterans Health Administration.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gregory T. Olson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Olson practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Royal C. Johnson Veterans' Memorial Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory T. Olson is one of 531 family medicine physicians in South Dakota
Family medicine is Dr. Olson's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Olson is licensed in Iowa.
Specialties and state licenses
- Family medicine, IowaPrimary
Family medicine physicians near Dr. Olson
Counts of family medicine physicians 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. Gregory T. Olson billed Medicare for 29 services in 2018
CMS data shows 29 Medicare services from Dr. Olson across 1 procedure code in 2018. Medicare paid $2,178 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Olson's Medicare services by type, 2017 to 2018
- 2017
- 2018
- Office and hospital visits
- 2017: 8692018: 2997%
Dr. Olson compared with the South Dakota median for family medicine physicians, 2018
- Dr. Olson
- South Dakota median
- Medicare services
- 29vs 24988% below
- Part D claims
- 145vs 1,09587% below
Medians across 551 family medicine physicians in South Dakota with Dmand AI profiles that report each measure.
Dr. Olson's most billed Medicare procedure codes, 2018
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Olson and other family medicine physicians in South Dakota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory T. Olson's patients have a median age of 69
Across all payers, Dmand AI patient panel data puts Dr. Olson's median patient age at 69, with 28% women.
Dr. Olson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women28%
- Men72%
Source: Dmand AI Patient Panel Data
Dr. Gregory T. Olson wrote 145 Medicare Part D claims in 2021
In 2021, Dr. Olson wrote 145 Medicare Part D claims. They cover 9 drugs, with $1,156 in total drug cost. In 2020, CMS named 70 claims across 4 drugs.
Dr. Olson's most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 702021: 145107%
Drugs named by CMS: 9 in 2021, 4 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
For MedTech and pharma teams
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Dr. Gregory T. Olson received $51 in industry payments from 2016 to 2018
CMS Open Payments shows 4 general payments to Dr. Olson from 2 drug and device companies from 2016 to 2018. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $28.
General payments to Dr. Olson by program year, 2016 to 2018
Companies that paid Dr. Olson the most, 2016 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Gregory T. Olson'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 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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 Dr. Gregory T. Olson
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. Gregory T. Olson's NPI number?
Dr. Gregory T. Olson's NPI number is 1174841795. It was assigned on May 6, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory T. Olson?
Dr. Gregory T. Olson is a family medicine physician in Sioux Falls, South Dakota. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Gregory T. Olson practice?
Dr. Olson practices at 2501 West 22nd Street, Sioux Falls, SD 57117. Dr. Olson's primary practice is Royal C. Johnson Veterans' Memorial Hospital in Sioux Falls, South Dakota, part of Veterans Health Administration.
What is Dr. Gregory T. Olson's office phone number?
The practice phone on file for Dr. Olson is (605) 336-3230.
What is Dr. Gregory T. Olson's medical license number?
Dr. Olson holds Iowa license 4203.
Which hospitals is Dr. Gregory T. Olson affiliated with?
Dr. Olson practices at Royal C. Johnson Veterans' Memorial Hospital in Sioux Falls, South Dakota.
Does Dr. Gregory T. Olson accept Medicare?
Yes. CMS data shows Dr. Olson billed Medicare for 29 services in 2018.
What services does Dr. Gregory T. Olson bill to Medicare?
In 2018, Dr. Olson's most billed Medicare services were hospital inpatient care (99233).
What drugs does Dr. Gregory T. Olson prescribe most?
In 2021 Medicare Part D data, Dr. Olson's most prescribed drugs by claims were Gabapentin, Atorvastatin Calcium and Metoprolol Succinate.
Has Dr. Gregory T. Olson received payments from drug or device companies?
CMS Open Payments shows $51 in general payments to Dr. Olson from 2 companies from 2016 to 2018. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Gregory T. Olson been practicing?
Dr. Olson's NPI was assigned in 2010.
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