Dr. Calvin E. Olson, MD
- Medicare services, 2021
- 511
- Part D claims, 2022
- 11
- Publications
- 1
- Industry payments
- $2,084
- Affiliated sites
- 1
- Practice address
- 600 Coffee Rd, Modesto, CA 95355
- Practice phone
- Call (209) 524-1211
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Sutter Valley Medical Foundation
Modesto, California
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. Calvin E. Olson is a gastroenterologist in Modesto, California
Dr. Olson practices at Sutter Valley Medical Foundation in Modesto, California.
Dr. Olson's NPI, 1740230713, was assigned on May 11, 2006. Dr. Olson graduated from UCSF School of Medicine in 1977. Dr. Olson holds California license C39482.
- NPI
- 1740230713NPI Registry (opens in a new tab)
- NPI enumeration date
- May 11, 2006
- NPI status
- Active
- Practice phone
- (209) 524-1211
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 75
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Calvin E. Olson practices at Sutter Valley Medical Foundation in Modesto, California
Dr. Olson's primary practice is Sutter Valley Medical Foundation, at 600 Coffee Rd, Modesto, CA 95355 in Stanislaus County. The practice phone is (209) 524-1211.
- Sutter Valley Medical Foundation600 Coffee Rd, Modesto, CA 95355 · Stanislaus CountyPhone(209) 524-1211
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Calvin E. Olson is affiliated with 2 sites of care and 1 medical group
Dr. Olson's primary practice is Sutter Valley Medical Foundation in Modesto, California. The medical group on file is SGMF Radiology. Dmand AI also links Dr. Olson to 1 more ambulatory surgery center, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Calvin E. 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 |
|---|---|
| Sutter Valley Medical Foundation | 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. Calvin E. Olson is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Olson's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Olson is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Olson's licenses on file in 2 states: California and Texas.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
- Texas license
Clinical focus
Dmand AI lists colonoscopy among the conditions Dr. Olson treats.
Gastroenterologists near Dr. Olson
Counts of gastroenterologists 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. Calvin E. Olson billed Medicare for 511 services in 2021
CMS data shows 511 Medicare services from Dr. Olson across 10 procedure codes in 2021. Medicare paid $47,331 for them.
Dr. Olson's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Surgery
- 2020: 2432021: 21412%
- Office and hospital visits
- 2020: 2452021: 19919%
- Other services
- 2020: 1432021: 9831%
Where Dr. Olson's Medicare services took place, 2021
- In an office6212%
- In a facility44988%
Dr. Olson compared with the California median for gastroenterologists, 2021
- Dr. Olson
- California median
- Medicare services
- 511vs 58613% below
- Part D claims
- 11vs 38097% below
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Dr. Olson's most billed Medicare procedure codes, 2021
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. Olson?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Olson and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Calvin E. Olson's patients have a median age of 66
Across all payers, Dmand AI patient panel data puts Dr. Olson's median patient age at 66, with 58% 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 66
Patient panel by sex, all payers
- Women58%
- Men40%
Source: Dmand AI Patient Panel Data
Dr. Calvin E. Olson wrote 11 Medicare Part D claims in 2022
In 2022, Dr. Olson wrote 11 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $219 in total drug cost. In 2021, CMS named 313 claims across 13 drugs.
Dr. Olson's most prescribed drugs by claims, 2022
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, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 3132022: 1196%
Drugs named by CMS: 1 in 2022, 13 in 2021.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Calvin E. Olson has 1 publication on record
Dmand AI links 1 paper to Dr. Olson.
Recent publications by Dr. Olson
See who Dr. Olson researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Olson works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Calvin E. Olson received $2,084 in industry payments from 2016 to 2024
CMS Open Payments shows 92 general payments to Dr. Olson from 9 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 99% of the total. Abbvie Inc. paid the most, $1,288.
General payments to Dr. Olson by program year, 2016 to 2024
General payments to Dr. Olson by kind, 2016 to 2024
- Food and beverage$2,07099%
- Education$151%
Companies that paid Dr. Olson the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Calvin E. Olson has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Olson, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Olson
- 2013
- CMS Stage 1 EHR
- Undated
- ACS Fellow
Source: Dmand AI Professional Profile Data
Dr. Calvin E. Olson graduated from UCSF School of Medicine
Dr. Olson graduated from UCSF School of Medicine in 1977. Dr. Olson is a member of ACG, ACS, AGA and ASGE.
- Medical school
- Board certified in gastroenterology
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Calvin E. Olson accepts plans from 13 insurance carriers
Dr. Olson is in network with 13 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Aetna
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +5 more carriersWith a free account
Plan types Dr. Olson accepts, by number of carriers
- PPO9
- HMO7
- Medicare6
- EPO3
- POS3
Source: Dmand AI Insurance Network Data
Sources for Dr. Calvin E. 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 | 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 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Calvin E. 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. Calvin E. Olson's NPI number?
Dr. Calvin E. Olson's NPI number is 1740230713. It was assigned on May 11, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Calvin E. Olson?
Dr. Calvin E. Olson is a gastroenterologist in Modesto, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Calvin E. Olson practice?
Dr. Olson practices at 600 Coffee Rd, Modesto, CA 95355. Dr. Olson's primary practice is Sutter Valley Medical Foundation in Modesto, California. Dmand AI also links Dr. Olson to 1 ambulatory surgery center.
What is Dr. Calvin E. Olson's office phone number?
The practice phone on file for Dr. Olson is (209) 524-1211.
What is Dr. Calvin E. Olson's medical license number?
Dr. Olson holds California license C39482, one of the licenses on file in 2 states.
Which states has Dr. Calvin E. Olson been licensed in?
Dmand AI has state licenses on file for Dr. Olson in California (1980 to 2026) and Texas (1978 to 1981).
What medical group is Dr. Calvin E. Olson part of?
Dr. Olson is linked to SGMF Radiology.
Does Dr. Calvin E. Olson accept Medicare?
Yes. CMS data shows Dr. Olson billed Medicare for 511 services in 2021.
Is Dr. Calvin E. Olson board certified?
Yes. Dr. Olson is board certified in gastroenterology by the American Board of Internal Medicine.
What services does Dr. Calvin E. Olson bill to Medicare?
In 2021, Dr. Olson's most billed Medicare services were surgery: digestive system (43239), medicare service (G0500) and surgery: digestive system (45380).
Show 6 more questionsShow fewer questions
Where did Dr. Calvin E. Olson go to medical school?
Dr. Olson graduated from UCSF School of Medicine in 1977.
What drugs does Dr. Calvin E. Olson prescribe most?
In 2022 Medicare Part D data, Dr. Olson's most prescribed drugs by claims were Omeprazole.
Has Dr. Calvin E. Olson received payments from drug or device companies?
CMS Open Payments shows $2,084 in general payments to Dr. Olson from 9 companies from 2016 to 2024. The largest total came from Abbvie Inc.
How long has Dr. Calvin E. Olson been practicing?
Dr. Olson graduated from medical school in 1977, 49 years ago.
Does Dr. Calvin E. Olson do research?
Dmand AI links 1 publication to Dr. Olson.
What insurance does Dr. Calvin E. Olson accept?
Dr. Olson is in network with 13 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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