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MARY KATHLEEN BISTER M.D.
NPI 1144546086
Family Medicine in Hartford, WI

Active since April 16, 2010PECOS EnrolledAccepts Medicare Assignment
1640 E SUMNER ST, HARTFORD, WI 53027(262) 670-4000(262) 640-4451 Get Directions Write a Review

NPPES record last updated: July 9, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 9, 2026, Sep 5, 2018 (2 updates tracked since 2018).

About Mary Kathleen Bister M.d. NPPES

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

MARY KATHLEEN BISTER M.D. (NPI 1144546086) is an individual family medicine provider in Hartford, Wisconsin, licensed in Wisconsin (86675) and active in the NPI registry since April 2010. She is enrolled in Medicare PECOS, is affiliated with Adventhealth North Pinellas, and maintains a secondary practice location in Cincinnati.

NPPES Registry Identity

NPI1144546086
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameMARY KATHLEEN BISTERCredential: M.D.
Location Address1640 E SUMNER STHartford, WI 53027-2684
Mailing AddressPo Box 735044Chicago, IL 60673-5044 · (800) 326-2250
Phone(262) 670-4000
Fax(262) 640-4451
Sole ProprietorNo
Medical School CMSUniversity Of Chicago, Pritzker School Of MedicineGraduated 2010
Enumeration DateApril 16, 2010
Last NPPES UpdateJuly 9, 20262 updates tracked since enumeration
NPPES CertifiedJuly 9, 2026
✔ NPI 1144546086 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in WI · 86675
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
Also ListedEmergency MedicineTaxonomy 207P00000X · License 35.123233 (OH)
1640 E SUMNER ST, Hartford, WI 53027
Open in Google Maps ↗

Secondary Practice Location 1

Location 1231 Albert Sabin Way, MSB 1551, M.L. 0769Cincinnati, OH 45267 · Phone (513) 558-8114

Other Identifiers 1

Medicaid100412525WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource (Common Ground Healthcare).Insurance ›

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

Mary Kathleen Bister M.d. 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 ID9931348166
PECOS Enrollment IDI20260417001819
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

4

Medicare enrollment records show Mary Bister reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Aurora Advanced Healthcare, Inc.
23 mi
Family Medicine
3003 W GOOD HOPE RD
Milwaukee, WI 53209
  • Reassigned Medicare billing, Wisconsin enrollment
  • 1,615 clinicians in this Medicare group
NPI 1265629133 (414) 352-3100
Aurora Medical Group, Inc.
27 mi
Obstetrics & Gynecology
8905 W LINCOLN AVE, SUITE 515
West Allis, WI 53227
  • Reassigned Medicare billing, Wisconsin enrollment
  • 4,609 clinicians in this Medicare group
NPI 1457592735 (414) 328-8650
Lakeshore Medical Clinic, LLC
34 mi
Family Medicine
2000 E LAYTON AVE STE 100
Saint Francis, WI 53235
  • Reassigned Medicare billing, Wisconsin enrollment
  • 960 clinicians in this Medicare group
NPI 1003861188 (414) 744-6589
Tampa Bay Emergency Physicians LLC
1,102 mi
Emergency Medicine
3100 E FLETCHER AVE
Tampa, FL 33613
  • Reassigned Medicare billing, Florida enrollment
  • 231 clinicians in this Medicare group
NPI 1114977428 (330) 493-4443

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 5

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.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
117 services115 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
91 services82 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
77 services77 patients
Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
24 services24 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
18 services17 patients

Hospital Affiliations CMS Care Compare

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

Adventhealth North Pinellas

Acute Care Hospitals · Tarpon Springs, FL
3/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number100055
Location1395 S Pinellas AveTarpon Springs, FL 34689 · Pinellas County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53027 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
$82.92 typical visit price
range $53.90 – $163.24
Typical copayment $20.73 (range $13.47 – $40.81)
Most-billed visit code 99203
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.

SARA C POUPORE NP
Nurse Practitioner
1640 E SUMNER ST
HARTFORD, WI 53027
Washington County (262) 670-4000
DANIELLE M MBIDA RN
Registered Nurse
1640 E SUMNER ST
HARTFORD, WI 53027
Washington County (262) 670-4000
MICHAEL J LONG M.D.
Family Medicine
1640 E SUMNER ST
HARTFORD, WI 53027
Washington County (262) 670-4000
KAYLA CHAPMAN
Surgery
1640 E SUMNER ST
HARTFORD, WI 53027
Washington County (262) 670-4000
RACHEL ELIZABETH BURTKA CCC-SLP
Speech-Language Pathologist
1640 E SUMNER ST
HARTFORD, WI 53027
Washington County (262) 670-4000
BRITTA BRADEN PA
Physician Assistant
1640 E SUMNER ST
HARTFORD, WI 53027
Washington County (262) 670-4000
BRUCE EDWARD HICKMAN MD
Family Medicine
1640 E SUMNER ST
HARTFORD, WI 53027
Washington County (262) 670-4000
SHELBY L HELMEID O.D.
Optometrist
1640 E SUMNER ST
HARTFORD, WI 53027
Washington County (262) 670-4000

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 Mary Bister's NPI number?

The NPI number for Mary Bister is 1144546086. It was assigned to this individual provider in the NPPES registry on April 16, 2010.

Where is Mary Bister located?

Mary Bister practices at 1640 E Sumner St, Hartford, WI 53027. The listed phone number is (262) 670-4000.

What is Mary Bister's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Mary Bister enrolled in Medicare?

Yes. Mary Bister 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 Mary Bister's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Bister reassigns Medicare benefits to 4 organizations: Aurora Advanced Healthcare, Inc. (Milwaukee, WI), Aurora Medical Group, Inc. (West Allis, WI), Lakeshore Medical Clinic, LLC (Saint Francis, WI) and Tampa Bay Emergency Physicians LLC (Tampa, FL). 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 Mary Bister's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mary Bister accept?

Health plans from CareSource (Common Ground Healthcare) list Mary Bister 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 Mary Bister affiliated with any hospitals?

According to CMS data, Mary Bister is affiliated with Adventhealth North Pinellas.

When was this NPI record last updated?

The NPPES record for Mary Bister was last updated on July 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.