DR. THEODOR ASGEIRSSON MD
NPI 1255480067
Colon & Rectal Surgery in Greenville, MI

Q: What is Theodor Asgeirsson's NPI number?

The NPI number for Theodor Asgeirsson is 1255480067. It was assigned to this individual provider in the NPPES registry on January 10, 2007.

Q: What is Theodor Asgeirsson's specialty?

The primary specialty registered for this NPI is Colon & Rectal Surgery with taxonomy code 208C00000X.

Active since January 10, 2007PECOS Enrolled

421 S BALDWIN ST, GREENVILLE, MI 48838(616) 225-8667 Get Directions Write a Review

NPPES record last updated: September 19, 2012. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Dr. Theodor Asgeirsson Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. THEODOR ASGEIRSSON MD (NPI 1255480067) is an individual colon & rectal surgery provider in Greenville, Michigan, licensed in California (A112879) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1255480067

Entity TypeIndividualMale

Primary Taxonomy208C00000X

Provider Legal NameDR. THEODOR ASGEIRSSONCredential: MD

Location Address421 S BALDWIN STGreenville, MI 48838-2102

Mailing Address421 S Baldwin StGreenville, MI 48838-2102 · (616) 225-8667

Phone(616) 225-8667

Sole ProprietorNo

Enumeration DateJanuary 10, 2007

Last NPPES UpdateSeptember 19, 2012

✔ NPI 1255480067 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyColon & Rectal SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code208C00000X

License✔ Licensed in CA · A112879

Definition

A colon and rectal surgeon is trained to diagnose and treat various diseases of the intestinal tract, colon, rectum, anal canal and perianal area by medical and surgical means. This specialist also deals with other organs and tissues (such as the liver, urinary and female reproductive system) involved with primary intestinal disease.

Also ListedSurgeryTaxonomy 208600000X · License 217561 (MA)

421 S BALDWIN ST, Greenville, MI 48838

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Theodor Asgeirsson Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Theodor Asgeirsson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Advantage Health Saint Mary's Medical Group

17 mi

Urgent Care

6050 NORTHLAND DR NE
Rockford, MI 49341

Reassigned Medicare billing, Michigan enrollment
737 clinicians in this Medicare group

NPI 1083014914 (616) 685-8350

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48838 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$84.74 typical visit price

range $54.34 – $166.68

Typical copayment $21.18 (range $13.58 – $41.67)

Most-billed visit code 99203

Established Patient

$68.07 typical visit price

range $17.09 – $135.40

Typical copayment $17.01 (range $4.27 – $33.85)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 8

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Ostomy skin barrier, solid 4 x 4 or equivalent, extended wear, without built-in convexity, each A4385

DME-Orthotic Devices · category DF010N

4 suppliers33 claims660 services$4.71 avg. paid by Medicare

Ostomy deodorant, with or without lubricant, for use in ostomy pouch, per fluid ounce A4394

DME-Orthotic Devices · category DF010N

3 suppliers17 claims398 services$2.31 avg. paid by Medicare

Ostomy skin barrier, with flange (solid, flexible, or accordion), extended wear, with built-in convexity, 4 x 4 inches or smaller, each A4407

DME-Orthotic Devices · category DF010N

2 suppliers19 claims350 services$7.93 avg. paid by Medicare

Ostomy skin barrier, with flange (solid, flexible or accordion), extended wear, without built-in convexity, 4 x 4 inches or smaller, each A4409

DME-Orthotic Devices · category DF010N

2 suppliers16 claims320 services$5.32 avg. paid by Medicare

Ostomy pouch, drainable; for use on barrier with non-locking flange, with filter (2 piece system), each A4425

DME-Orthotic Devices · category DF010N

3 suppliers17 claims360 services$2.66 avg. paid by Medicare

Adhesive remover, wipes, any type, each A4456

DME-Medical/Surgical Supplies · category DA000N

2 suppliers12 claims850 services$0.23 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

AMBULATORY UNITED

Surgery