NPPES file of Aug 9, 2026

Theodor Asgeirsson, MD

Colon & Rectal Surgery Physician · Greenville, MI

Theodor Asgeirsson, MD is a colon & rectal surgery physician with a practice address in Greenville, Michigan, and NPI 1255480067, issued on Jan 10, 2007. Check the license on the Michigan Board of Medicine (LARA); the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1255480067
Name
Theodor Asgeirsson
Credential
MD
Primary taxonomy
Colon & Rectal Surgery Physician 208C00000X
License numbers
A112879 CA
217561 MA
Self-reported in NPPES; status is on the state search
Practice location
421 S Baldwin St, Greenville, MI 48838
Phone
(616) 225-8667
Enumerated
Jan 10, 2007
Record last updated
Sep 19, 2012 (not updated in 14 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 421 S Baldwin St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Thomas Tavarone, MD, FACSSurgery Physician1245214741

Verify Theodor Asgeirsson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Michigan license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Colon & Rectal Surgery Physician providers in Michigan

There are 87 colon & rectal surgery physician records in Michigan. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 87 in Michigan → Every provider in Greenville →

Other colon & rectal surgery physician records in Michigan

  1. Arpit Aggarwal, DODearborn, MI1356879035
  2. Amer Alame, M.D.Saint Clair Shores, MI1093975542
  3. Maryam Aleissa, MDSouthfield, MI1508549676
  4. Murad Bani Hani, M.D.Rochester Hills, MI1659603678
  5. Kenneth Bark, M.D.Rochester Hills, MI1932303484
  6. Donald Barkel, MDRoyal Oak, MI1356324313
  7. John Bauman, M.D.Royal Oak, MI1609281690
  8. Jasneet Bhullar, M.D.Rochester Hills, MI1316177876
  9. Robert Brickner, M.C.Lansing, MI1891779401
  10. Kristin Busch, MDMidland, MI1649566068

Common questions

What is Theodor Asgeirsson, MD's NPI number?

Theodor Asgeirsson, MD's National Provider Identifier (NPI) is 1255480067, issued on Jan 10, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Theodor Asgeirsson, MD located?

The NPPES record lists a practice address at 421 S Baldwin St, Greenville, MI, 48838. Phone: (616) 225-8667. Providers update this record themselves, so call before visiting.

How can I verify Theodor Asgeirsson, MD's license?

Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.