Dr. Theodor Asgeirsson, MD
- Medicare services, 2022
- 27
- Part D claims, 2022
- 66
- Industry payments
- $15,877
- Affiliated sites
- 2
- Medical groups
- 3
- Practice address
- 421 S Baldwin St, Greenville, MI 48838-2102
- Practice phone
- Call (616) 225-8667
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Spectrum Health United
Multi-specialty group site · Greenville, Michigan
Find Dr. Asgeirsson'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. Theodor Asgeirsson is a colorectal surgeon in Saint Paul, Minnesota
Dr. Asgeirsson practices at Spectrum Health United in Greenville, Michigan.
Dr. Asgeirsson's NPI, 1255480067, was assigned on January 10, 2007. Dr. Asgeirsson holds California license A112879.
- NPI
- 1255480067NPI Registry (opens in a new tab)
- NPI enumeration date
- January 10, 2007
- NPI status
- Active
- Practice phone
- (616) 225-8667
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Theodor Asgeirsson practices in Greenville and Saint Paul
Dr. Asgeirsson's primary practice is Spectrum Health United, at 421 S Baldwin St, Greenville, MI 48838-2102. The practice phone is (616) 225-8667. The NPI Registry lists Dr. Asgeirsson's practice address as 651 Campus Dr, Saint Paul, MN 55112.
- Spectrum Health UnitedPrimary421 S Baldwin St, Greenville, MI 48838-2102Phone(616) 225-8667
- NPI Registry address651 Campus Dr, Saint Paul, MN 55112 · Ramsey CountyPhone(616) 225-8667
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Theodor Asgeirsson is affiliated with 2 sites of care and 3 medical groups
Dr. Asgeirsson's primary practice is Spectrum Health United in Greenville, Michigan. The medical group on file is Trinity Health Medical Group. Dmand AI also links Dr. Asgeirsson to 2 more medical groups and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Theodor Asgeirsson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Asgeirsson practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Spectrum Health United | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Theodor Asgeirsson is one of 77 colorectal surgeons in Minnesota
Colon and rectal surgery is Dr. Asgeirsson's primary specialty in the NPI Registry, under taxonomy code 208C00000X. Dmand AI has Dr. Asgeirsson's licenses on file in 2 states: California and Massachusetts.
Specialties and state licenses
- Colon and rectal surgery, CaliforniaPrimary
- Surgery, Massachusetts
Colorectal surgeons near Dr. Asgeirsson
Counts of colorectal surgeons 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. Theodor Asgeirsson billed Medicare for 27 services in 2022
CMS data shows 27 Medicare services from Dr. Asgeirsson across 1 procedure code in 2022, all of them office visits. Medicare paid $1,691 for them. Every service was in an office.
Dr. Asgeirsson's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 1002022: 2773%
- Other services
- 2021: 202022: 0100%
- Surgery
- 2021: 132022: 0100%
Dr. Asgeirsson compared with the Minnesota median for colorectal surgeons, 2022
- Dr. Asgeirsson
- Minnesota median
- Medicare services
- 27vs 10474% below
- Part D claims
- 66vs 7512% below
Medians across 63 colorectal surgeons in Minnesota with Dmand AI profiles that report each measure.
Dr. Asgeirsson's most billed Medicare procedure codes, 2022
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. Asgeirsson and other colorectal surgeons in Minnesota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Theodor Asgeirsson's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Asgeirsson's median patient age at 73, with 50% women.
Dr. Asgeirsson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Theodor Asgeirsson wrote 66 Medicare Part D claims in 2022
In 2022, Dr. Asgeirsson wrote 66 Medicare Part D claims. They cover 3 drugs, with $986 in total drug cost. In 2021, CMS named 63 claims across 3 drugs.
Dr. Asgeirsson'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: 632022: 665%
Drugs named by CMS: 3 in 2022, 3 in 2021.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Theodor Asgeirsson received $15,877 in industry payments from 2016 to 2022
CMS Open Payments shows 29 general payments to Dr. Asgeirsson from 6 drug and device companies from 2016 to 2022. Education make up the largest share, 77% of the total. Intuitive Surgical, Inc. paid the most, $14,568.
General payments to Dr. Asgeirsson by program year, 2016 to 2022
General payments to Dr. Asgeirsson by kind, 2016 to 2022
- Education$12,25077%
- Travel and lodging$3,25120%
- Food and beverage$3772%
Companies that paid Dr. Asgeirsson the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Theodor Asgeirsson'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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. Theodor Asgeirsson
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. Theodor Asgeirsson's NPI number?
Dr. Theodor Asgeirsson's NPI number is 1255480067. It was assigned on January 10, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Theodor Asgeirsson?
Dr. Theodor Asgeirsson is a colorectal surgeon in Saint Paul, Minnesota. The primary specialty in the NPI Registry is Colon & Rectal Surgery Physician (taxonomy code 208C00000X).
Where does Dr. Theodor Asgeirsson practice?
Dr. Asgeirsson practices at 421 S Baldwin St, Greenville, MI 48838-2102. Dr. Asgeirsson also practices at 651 Campus Dr, Saint Paul, MN 55112. Dr. Asgeirsson's primary practice is Spectrum Health United in Greenville, Michigan. Dmand AI also links Dr. Asgeirsson to 2 medical groups and 1 group practice or clinic.
What is Dr. Theodor Asgeirsson's office phone number?
The practice phone on file for Dr. Asgeirsson is (616) 225-8667.
What is Dr. Theodor Asgeirsson's medical license number?
Dr. Asgeirsson holds California license A112879, one of the licenses on file in 2 states.
Which states has Dr. Theodor Asgeirsson been licensed in?
Dmand AI has state licenses on file for Dr. Asgeirsson in California and Massachusetts.
What medical group is Dr. Theodor Asgeirsson part of?
Dr. Asgeirsson is linked to Trinity Health Medical Group. Dmand AI links Dr. Asgeirsson to 2 more medical groups.
Does Dr. Theodor Asgeirsson accept Medicare?
Yes. CMS data shows Dr. Asgeirsson billed Medicare for 27 services in 2022.
What services does Dr. Theodor Asgeirsson bill to Medicare?
In 2022, Dr. Asgeirsson's most billed Medicare services were office visit, established patient (99213).
What drugs does Dr. Theodor Asgeirsson prescribe most?
In 2022 Medicare Part D data, Dr. Asgeirsson's most prescribed drugs by claims were Metronidazole, Neomycin Sulfate and Diphenoxylate-Atropine.
Has Dr. Theodor Asgeirsson received payments from drug or device companies?
CMS Open Payments shows $15,877 in general payments to Dr. Asgeirsson from 6 companies from 2016 to 2022. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Theodor Asgeirsson been practicing?
Dr. Asgeirsson graduated from medical school in 1998, 28 years ago.
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