MATTHIAS WEISS MD
NPI 1245336759
Internal Medicine - Hematology & Oncology in La Crosse, WI

Active since September 15, 2006PECOS EnrolledAccepts Medicare Assignment
700 WEST AVE S, LA CROSSE, WI 54601(608) 785-0940 Get Directions Write a Review

NPPES record last updated: October 18, 2021. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Oct 18, 2021, Jan 14, 2021 (2 updates tracked since 2021).

About Matthias Weiss Md NPPES

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

MATTHIAS WEISS MD (NPI 1245336759) is an individual hematology & oncology provider in La Crosse, Wisconsin, licensed in Wisconsin (30093) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, is affiliated with Thedacare Regional Med Ctr - Neenah, and maintains a secondary practice location in Appleton.

NPPES Registry Identity

NPI1245336759
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameMATTHIAS WEISSCredential: MD
Location Address700 WEST AVE SLa Crosse, WI 54601-4783
Mailing Address200 1st St SwRochester, MN 55905-0002 · (608) 785-0940
Sole ProprietorNo
Medical School CMSOtherGraduated 1986
Enumeration DateSeptember 15, 2006
Last NPPES UpdateOctober 18, 20212 updates tracked since enumeration
NPPES CertifiedOctober 18, 2021
NPI 1245336759 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License Licensed in WI · 30093
Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

700 WEST AVE S, La Crosse, WI 54601

Secondary Practice Location 1

Location 11818 N Meade St, Suite W120Appleton, WI 54911-3454 · Phone (920) 735-7300 · Fax (920) 735-7333

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Matthias Weiss Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1254466964
PECOS Enrollment IDI20100623000197
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.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
24 services22 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
16 services15 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Thedacare Regional Med Ctr - Neenah

Acute Care Hospitals · Neenah, WI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520045
Location130 2nd StNeenah, WI 54956 · Winnebago County
Emergency services Birthing friendly

Thedacare Regional Medical Center - Appleton Inc

Acute Care Hospitals · Appleton, WI
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520160
Location1818 N Meade StAppleton, WI 54911 · Outagamie County
Emergency services Birthing friendly

Thedacare Medical Center-Waupaca

Critical Access Hospitals · Waupaca, WI
OwnershipVoluntary non-profit - Private
CMS Certification Number521334
Location800 Riverside DriveWaupaca, WI 54981 · Waupaca County
Emergency services Birthing friendly

Thedacare Medical Center - Shawano

Critical Access Hospitals · Shawano, WI
OwnershipVoluntary non-profit - Private
CMS Certification Number521346
Location100 County Rd BShawano, WI 54166 · Shawano County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 54601 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
$163.24 typical visit price
range $53.90 – $163.24
Typical copayment $40.81 (range $13.47 – $40.81)
Most-billed visit code 99205
Established Patient
$95.41 typical visit price
range $17.40 – $133.76
Typical copayment $23.85 (range $4.35 – $33.44)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

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

Obstetrics & Gynecology
700 WEST AVE S, PHYSICIAN SERVICES
LA CROSSE, WI 54601
Emergency Medicine
700 WEST AVE S
LA CROSSE, WI 54601
Radiology (Diagnostic Radiology)
700 WEST AVE S
LA CROSSE, WI 54601
Family Medicine
700 WEST AVE S
LA CROSSE, WI 54601
Radiology (Diagnostic Radiology)
700 WEST AVE S, ATTN: PHYSICIAN SERVICES
LACROSSE, WI 54601
Pharmacist
700 WEST AVE S
LA CROSSE, WI 54601
Pharmacist
700 WEST AVE S, 1ST FLOOR
LA CROSSE, WI 54601
Physical Therapy Assistant
700 WEST AVE S
LA CROSSE, WI 54601

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Matthias Weiss's NPI number?

The NPI number for Matthias Weiss is 1245336759. It was assigned to this individual provider in the NPPES registry on September 15, 2006.

Where is Matthias Weiss located?

Matthias Weiss practices at 700 West Ave S, La Crosse, WI 54601. The listed phone number is (608) 785-0940.

What is Matthias Weiss's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Matthias Weiss enrolled in Medicare?

Yes. Matthias Weiss is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Matthias Weiss accept?

Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare), HealthPartners and Network Health and 2 other insurers list Matthias Weiss as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Matthias Weiss affiliated with any hospitals?

According to CMS data, Matthias Weiss is affiliated with Thedacare Regional Med Ctr - Neenah, Thedacare Regional Medical Center - Appleton Inc, Thedacare Medical Center-Waupaca and Thedacare Medical Center - Shawano.

When was this NPI record last updated?

The NPPES record for Matthias Weiss was last updated on October 18, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.