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MICHAEL D JEFFERIES MD
NPI 1982750519
Anesthesiology in La Crosse, WI

Active since January 26, 2007PECOS EnrolledAccepts Medicare Assignment
1836 SOUTH AVE, LA CROSSE, WI 54601(608) 782-7300 Get Directions Write a Review

NPPES record last updated: January 23, 2014. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Michael D Jefferies Md NPPES

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

MICHAEL D JEFFERIES MD (NPI 1982750519) is an individual anesthesiology provider in La Crosse, Wisconsin, licensed in Wisconsin (51361-020) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, is affiliated with Gundersen Lutheran Medical Center, and is a graduate of Jefferson Medical College Of Thomas Jefferson University (2004).

NPPES Registry Identity

NPI1982750519
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameMICHAEL D JEFFERIESCredential: MD
Location Address1836 SOUTH AVELa Crosse, WI 54601-5429
Mailing Address1836 South AveLa Crosse, WI 54601-5429 · (608) 782-7300
Phone(608) 782-7300
Sole ProprietorNo
Medical School CMSJefferson Medical College Of Thomas Jefferson UniversityGraduated 2004
Enumeration DateJanuary 26, 2007
Last NPPES UpdateJanuary 23, 2014
✔ NPI 1982750519 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in WI · 51361-020
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X · License TL-1710 (CO)
1836 SOUTH AVE, La Crosse, WI 54601
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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 and accepts Medicare assignment

Michael D Jefferies 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 ID8325110307
PECOS Enrollment IDI20080708000600
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 Reassignments

2

Medicare enrollment records show Michael Jefferies reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Gundersen Clinic Ltd
Same address
Clinic/Center
1836 SOUTH AVE
La Crosse, WI 54601
  • Reassigned Medicare billing, Wisconsin enrollment
  • 928 clinicians in this Medicare group
NPI 1851343115 (608) 782-7300
Gundersen Lutheran Medical Center, Inc
Same address
Clinic/Center
710 DENTON ST
La Crosse, WI 54601
  • Reassigned Medicare billing, Wisconsin enrollment
  • 1,457 clinicians in this Medicare group
NPI 1619210895 (608) 782-7300

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

Areas of Expertise CMS Part B claims 4

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.

Anesthesia for lens surgery 00142
Anesthesia for lens surgery involves administering medication to numb the eye area, ensuring you feel no pain during the procedure. This can be a local anesthetic (numbing only the eye area) or general (where you're asleep). It helps make the surgery comfortable and stress-free.
33 services33 patients
Insertion of artery tube for blood sampling or infusion through skin 36620
This procedure involves placing a small tube into an artery, usually in the wrist or elbow, to collect blood samples or administer medication. It's done under local anesthesia and is a common, safe practice.
17 services17 patients
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731
This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.
12 services12 patients
Anesthesia for other procedure on lower abdomen 00840
Anesthesia for a lower abdomen procedure involves medication to eliminate pain during surgery. You might be awake but relaxed and pain-free, or you may be completely unconscious. It's administered to ensure comfort and safety throughout the operation.
11 services11 patients

Hospital Affiliations CMS Care Compare

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

Gundersen Lutheran Medical Center

Acute Care Hospitals · La Crosse, WI
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520087
Location1910 South AveLa Crosse, WI 54601 · La Crosse County
Emergency services Birthing friendly

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.

JEFFREY BRIAN TROHKIMOINEN M.D.
Anesthesiology
1836 SOUTH AVE, GUNDERSEN CLINIC, LTD.
LA CROSSE, WI 54601
La Crosse County (608) 775-2031
JESSICA E THESING CRNA
Nurse Anesthetist, Certified Registered
1836 SOUTH AVE
LA CROSSE, WI 54601
La Crosse County (608) 782-7300
DR. MICHAEL DAVID SMITH PSY.D.
Psychologist
1836 SOUTH AVE
LA CROSSE, WI 54601
La Crosse County (608) 782-7300
JESSICA MAE RASMUSSEN
Surgery
1836 SOUTH AVE
LA CROSSE, WI 54601
La Crosse County (608) 782-7300
JULIE SONSALLA NP
Nurse Practitioner (Adult Health)
1836 SOUTH AVE
LA CROSSE, WI 54601
La Crosse County (608) 782-7300
LAURA KLINGBEIL
Orthopaedic Surgery
1836 SOUTH AVE
LA CROSSE, WI 54601
La Crosse County (608) 782-7300
SUSAN CAROL SORRENTINO RN
Registered Nurse (Addiction (Substance Use Disorder))
1836 SOUTH AVE
LA CROSSE, WI 54601
La Crosse County (608) 782-7300
NAOMI MUTHONI RUIRU NP
Nurse Practitioner (Family)
1836 SOUTH AVE
LA CROSSE, WI 54601
La Crosse County (608) 782-7300

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 Michael Jefferies's NPI number?

The NPI number for Michael Jefferies is 1982750519. It was assigned to this individual provider in the NPPES registry on January 26, 2007.

Where is Michael Jefferies located?

Michael Jefferies practices at 1836 South Ave, La Crosse, WI 54601. The listed phone number is (608) 782-7300.

What is Michael Jefferies's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Michael Jefferies enrolled in Medicare?

Yes. Michael Jefferies 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.

Which organizations bill Medicare for Michael Jefferies's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Jefferies reassigns Medicare benefits to 2 organizations: Gundersen Clinic Ltd (La Crosse, WI) and Gundersen Lutheran Medical Center, Inc (La Crosse, WI). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michael Jefferies's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Michael Jefferies affiliated with any hospitals?

According to CMS data, Michael Jefferies is affiliated with Gundersen Lutheran Medical Center.

When was this NPI record last updated?

The NPPES record for Michael Jefferies was last updated on January 23, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.