MARGARET WALKER
NPI 1396291233
Internal Medicine - Hematology & Oncology in Madison, WI

NPI Status: Active since August 31, 2016

Contact Information

600 HIGHLAND AVE
MADISON, WI
ZIP 53792
Phone: (608) 263-6400

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  • Individual
  • Female
  • Years of Experience 6
  • Internal Medicine
  • Hematology & Oncology
  • Accepts Insurance
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About MARGARET WALKER

This page provides the complete NPI Profile along with additional information for Margaret Walker, an internist established in Madison, Wisconsin with a medical specialization in Internal Medicine, focusing in hematology & oncology and more than 6 years of experience. She graduated from Northwestern University Feinberg Medical School in 2020. The healthcare provider is registered in the NPI registry with number 1396291233 assigned on August 2016. The practitioner's primary taxonomy code is 207RH0003X with license number 77589-20 (WI). The provider is registered as an individual and her NPI record was last updated July 2025.

NPI
1396291233
Provider Name
MARGARET WALKER
Gender
Female
Entity Type
Individual
Location Address
600 HIGHLAND AVE MADISON, WI 53792
Location Phone
(608) 263-6400
Mailing Address
600 HIGHLAND AVE MADISON, WI 53792
Medical School Name
NORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduation Year
2020
Is Sole Proprietor?
No
Enumeration Date
08-31-2016
Last Update Date
07-16-2025
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An internist like Margaret Walker is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

Location Map

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Internal Medicine Hematology & Oncology

Taxonomy Code
207RH0003X
Type
Allopathic & Osteopathic Physicians
License No.
77589-20
License State
WI
Taxonomy Description
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.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

  • Better Together HMO Bronze 6500 Ded/8000 MOOP - HMO
  • Better Together HMO Bronze 7500 Ded/9200 MOOP - HMO
  • Better Together HMO Bronze No Medical Ded/9200 MOOP - HMO
  • Better Together HMO Gold 1000 Ded/6000 MOOP with Vision - HMO
  • Better Together HMO Gold 1500 Ded/7800 MOOP - HMO
  • Better Together HMO Gold 2900 Ded/2900 MOOP HSA - HMO
  • Better Together HMO Platinum 500 Ded/1500 MOOP with Vision - HMO
  • Better Together HMO Platinum No Ded/2800 MOOP - HMO
  • Better Together HMO Platinum No Ded/4300 MOOP - HMO
  • Better Together HMO Silver 4100 Ded/7500 MOOP with Vision - HMO
  • Better Together HMO Silver 5000 Ded/8000 MOOP - HMO
  • Better Together HMO Silver 5500 Ded/5500 MOOP HSA - HMO
  • Partners HMO Bronze 5000 Ded/9200 MOOP - HMO
  • Partners HMO Bronze 7500 Ded/9200 MOOP - HMO
  • Partners HMO Bronze 7900 Ded/7900 MOOP HSA - HMO
  • Partners HMO Gold 1000 Ded/6000 MOOP with Vision - HMO
  • Partners HMO Gold 1500 Ded/7800 MOOP - HMO
  • Partners HMO Gold 2900 Ded/2900 MOOP HSA - HMO
  • Partners HMO Silver 4100 Ded/7500 MOOP with Vision - HMO
  • Partners HMO Silver 5000 Ded/8000 MOOP - HMO

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Medicare Participation & PECOS Enrollment Status

Margaret Walker is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Margaret Walker is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME) and a Home Health Agency (HHA).

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 9335563824

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20230816002549

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: No

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $40.81 for a new patient copayment and $23.85 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 53792 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99205

  • Average New Patient Price $163.24
  • Minimum New Patient Price $53.9
  • Maximum New Patient Price $163.24
  • Average New Patient Copayment $40.81
  • Minimum New Patient Copayment $13.47
  • Maximum New Patient Copayment $40.81

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

  • Average Established Patient Price $95.41
  • Minimum Established Patient Price $17.4
  • Maximum Established Patient Price $133.76
  • Average Established Patient Copayment $23.85
  • Minimum Established Patient Copayment $4.35
  • Maximum Established Patient Copayment $33.44

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

Find Provider Hospital Affiliations - Privileges

Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.

Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. Margaret Walker is affiliated with the following medical facilities:

Hospital Name Address Phone Hospital Type Overall Rating
UNIVERSITY OF WI HOSPITALS & CLINICS AUTHORITY600 HIGHLAND AVENUE
MADISON, WI 53792
(608) 263-6400Acute Care Hospitals

Reviews for MARGARET WALKER

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NPI Validation Check Digit Calculation


The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.

Start with the original NPI number, the last digit is the check digit and is not used in the calculation.
1396291233
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
2318649226
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 3 + 1 + 8 + 6 + 4 + 9 + 2 + 2 + 6 + 24 = 67
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit.
70 - 67 = 33

The NPI number 1396291233 is valid because the calculated check digit 3 using the Luhn validation algorithm matches the last digit of the original NPI number.

Other Providers at the Same Location


The following 20 providers are registered at the same or nearby location.

PETER STIER M.D.

Emergency Medicine

600 HIGHLAND AVE
MADISON, WI
ZIP 53792

(608) 262-2398

RALPH M. COLBURN MD

Radiology

(Diagnostic Radiology)

600 HIGHLAND AVE
MADISON, WI
ZIP 53792

(608) 263-8340

DR. A LELAND ALBRIGHT MD

Neurological Surgery

600 HIGHLAND AVE
MADISON, WI
ZIP 53792

(608) 263-9651

JOHN O FLEMING MD

Psychiatry & Neurology

(Neurology)

600 HIGHLAND AVE
MADISON, WI
ZIP 53792

(608) 263-5442

JENNY P LIAO MD

Psychiatry & Neurology

(Neurology)

600 HIGHLAND AVE
MADISON, WI
ZIP 53792

(608) 263-5442

JENNIFER S WINCHELL NP

Nurse Practitioner

600 HIGHLAND AVE
MADISON, WI
ZIP 53792

(608) 263-7502

LOUIS C FISCHER M.D.

Radiology

(Diagnostic Radiology)

600 HIGHLAND AVE
MADISON, WI
ZIP 53792

(608) 263-8340

JOANNE K RASH PA

Physician Assistant

600 HIGHLAND AVE
MADISON, WI
ZIP 53792

(608) 265-1700

TAMARA WILLMAN CRNA

Nurse Anesthetist, Certified Registered

600 HIGHLAND AVE
MADISON, WI
ZIP 53792

(608) 263-8100

PATRICIA ANN BARRETT MD

Radiology

(Radiation Oncology)

600 HIGHLAND AVE
MADISON, WI
ZIP 53792

(608) 263-8500

JAMES H FITZPATRICK MD

Anesthesiology

600 HIGHLAND AVE
MADISON, WI
ZIP 53792

(608) 263-8100

MARK E SCHROEDER MD

Anesthesiology

600 HIGHLAND AVE
MADISON, WI
ZIP 53792

(608) 263-8100

KARL WILLMANN MD

Anesthesiology

600 HIGHLAND AVE
MADISON, WI
ZIP 53792

(608) 263-8100

FRANCES WIEDENHOEFT CRNA

Nurse Anesthetist, Certified Registered

600 HIGHLAND AVE
MADISON, WI
ZIP 53792

(608) 263-8100

REBECCA ANN KONKOL CRNA

Nurse Anesthetist, Certified Registered

600 HIGHLAND AVE
MADISON, WI
ZIP 53792

(608) 263-8100

THOMAS O MONSOOR CRNA

Nurse Anesthetist, Certified Registered

600 HIGHLAND AVE
MADISON, WI
ZIP 53792

(608) 263-8100

KATHRYN F FAHRENKRUG CRNA

Nurse Anesthetist, Certified Registered

600 HIGHLAND AVE
MADISON, WI
ZIP 53792

(608) 263-8100

GIUDITTA ANGELINI MD

Anesthesiology

600 HIGHLAND AVE
MADISON, WI
ZIP 53792

(608) 263-8100

GEORGE M SAVIELLO MD MBA

Anesthesiology

600 HIGHLAND AVE
MADISON, WI
ZIP 53792

(608) 263-8100

ROBERT B HOLLAND MD

Internal Medicine

(Medical Oncology)

600 HIGHLAND AVE
MADISON, WI
ZIP 53792

(608) 263-7500

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1396291233, enumerated as an "individual" on August 31, 2016.

The provider is located at 600 HIGHLAND AVE MADISON, WI 53792 and the phone number is (608) 263-6400.

Internal Medicine with taxonomy code 207RH0003X and a focus in Hematology & Oncology.

The provider might be accepting Accepts: Group Health Cooperative-SCW. Please consult your insurance carrier or call the provider to verify.

Margaret Walker is affiliated with: UNIVERSITY OF WI HOSPITALS & CLINICS AUTHORITY.