RICHARD L ILLGEN MD
NPI 1255395976
Orthopaedic Surgery in Madison, WI

Active since April 12, 2006PECOS EnrolledAccepts Medicare Assignment
600 HIGHLAND AVE, MADISON, WI 53792(608) 263-7540(608) 265-6526 Get Directions Write a Review

NPPES record last updated: February 9, 2023. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Feb 9, 2023, Jan 6, 2021 (2 updates tracked since 2021).

  • Individual
  • Male
  • Years of Experience 34
  • Orthopaedic Surgery
  • Accepts Insurance
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About RICHARD ILLGEN

This page provides the complete NPI Profile along with additional information for Richard Illgen, a provider established in Madison, Wisconsin with a medical specialization in Orthopaedic Surgery and more than 34 years of experience. He graduated from University Of Chicago, Pritzker School Of Medicine in 1993. The healthcare provider is registered in the NPI registry with number 1255395976 assigned on April 2006. The practitioner's primary taxonomy code is 207X00000X with license number 42140 (WI). The provider is registered as an individual and his NPI record was last updated 3 years ago.

NPI
1255395976
Provider Name
RICHARD L ILLGEN MD
Gender
Male
Entity Type
Individual
Location Address
600 HIGHLAND AVE MADISON, WI 53792
Location Phone
(608) 263-7540
Location Fax
(608) 265-6526
Mailing Address
7974 UW HEALTH CT MIDDLETON, WI 53562
Mailing Phone
(608) 829-5485
Medical School Name
UNIVERSITY OF CHICAGO, PRITZKER SCHOOL OF MEDICINE
Graduation Year
1993
Is Sole Proprietor?
No
Enumeration Date
04-12-2006
Last Update Date
02-09-2023
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Location Map

Secondary Locations

  • 1211 Fish Hatchery Rd
    Madison, WI 53715
    (608) 252-8000

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

Orthopaedic Surgery

Taxonomy Code
207X00000X
Type
Allopathic & Osteopathic Physicians
License No.
42140
License State
WI
Taxonomy Description
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.

Insurance Plans Accepted

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

  • Anthem Bronze Pathway/Lean 5000 (3 Free PCP Visits + $0 Select Drugs + Incentives) - HMO
  • Anthem Bronze Pathway/Lean HSA (+ Incentives) - HMO
  • Anthem Bronze Pathway/Lean Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) - HMO
  • Anthem Bronze Preferred/Broad 5000 (3 Free PCP Visits + $0 Select Drugs + Incentives) - POS
  • Anthem Bronze Preferred/Broad HSA (+ Incentives) - POS
  • Anthem Bronze Preferred/Broad Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) - POS
  • Anthem Gold Pathway/Lean 1000 ($0 Virtual PCP + $0 Select Drugs + Incentives) - HMO
  • Anthem Gold Pathway/Lean Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) - HMO
  • Anthem Gold Preferred/Broad 1000 ($0 Virtual PCP + $0 Select Drugs + Incentives) - POS
  • Anthem Gold Preferred/Broad Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) - POS
  • HMO Bronze $0 Medical Deductible - HMO
  • HMO Bronze 10000 - HMO
  • HMO Bronze 7500 - HMO
  • HMO Catastrophic 10600 with 3 free PCP visits - HMO
  • HMO Gold 2000 - HMO
  • HMO Gold 2700 - HMO
  • HMO HDHP Silver 5900 - HMO
  • HMO Silver 6000 - HMO
  • HMO Silver 6600 - HMO
  • POS Bronze 7500 - POS
  • Better Together HMO Bronze 6500 Ded/8750 MOOP HSA - HMO
  • Better Together HMO Bronze 7500 Ded/10000 MOOP HSA - HMO
  • Better Together HMO Bronze No Medical Ded/10600 MOOP HSA - HMO
  • Better Together HMO Gold 1500 Ded/8000 MOOP with Vision - HMO
  • Better Together HMO Gold 2000 Ded/8200 MOOP - HMO
  • Better Together HMO Gold 4000 Ded/4000 MOOP HSA - HMO
  • Better Together HMO Platinum 750 Ded/2000 MOOP with Vision - HMO
  • Better Together HMO Platinum No Ded/3300 MOOP - HMO
  • Better Together HMO Platinum No Ded/5200 MOOP - HMO
  • Better Together HMO Silver 5500 Ded/8500 MOOP with Vision - HMO
  • Oak $1,300 Gold - PPO
  • Oak $2,000 Standard Gold - PPO
  • QUARTZ GUNDERSEN PERFORMANCE BRONZE $0 MEDICAL DED - HMO
  • QUARTZ GUNDERSEN PERFORMANCE BRONZE $10,150 DED - HMO
  • QUARTZ GUNDERSEN PERFORMANCE BRONZE (DENTAL & VISION) $0 MEDICAL DED - HMO
  • QUARTZ GUNDERSEN PERFORMANCE BRONZE (DENTAL & VISION) $10,150 DED - HMO
  • QUARTZ GUNDERSEN PERFORMANCE BRONZE (DENTAL & VISION) STANDARD EASY PRICING - HMO
  • QUARTZ GUNDERSEN PERFORMANCE BRONZE STANDARD EASY PRICING - HMO
  • QUARTZ GUNDERSEN PERFORMANCE CATASTROPHIC $10,600 DED - HMO
  • QUARTZ GUNDERSEN PERFORMANCE GOLD $4,000 DED - HMO
  • QUARTZ GUNDERSEN PERFORMANCE GOLD (DENTAL & VISION) $4,000 DED - HMO
  • QUARTZ GUNDERSEN PERFORMANCE GOLD (DENTAL & VISION) STANDARD EASY PRICING - HMO
  • Enrich $2,000 - 25% - HMO
  • Enrich $3,500 - 30% - HMO
  • Enrich $4,000 - 50% - HMO
  • Enrich $5,000 HDHP - HMO
  • Enrich $6,000 - 40% - HMO
  • Enrich $7,500 - HMO
  • Enrich $7,500 HDHP - HMO
  • Enrich $9,500 - HMO
  • Enrich Protection - HMO
  • Premier $2,000 - 25% - HMO

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

Medicare Participation & PECOS Enrollment Status

Richard Illgen 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.

Richard Illgen 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), a Home Health Agency (HHA) and Power Mobility Devices.

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: 2961539762

    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: I20100428000127

    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: Yes

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

This service was performed 144 times for 136 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more

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.

This service was performed 51 times for 51 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

This service was performed 119 times for 119 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

This service was performed 26 times for 26 patients

Replacement of knee joint, both sides of knee

A bilateral knee joint replacement is a procedure where the damaged parts of both your knee joints are replaced with artificial parts. It aims to relieve pain and improve mobility. The process involves a surgical operation under anesthesia.

This service was performed 136 times for 128 patients

Replacement of thigh bone and hip joint with prosthesis

This procedure, known as hip arthroplasty, involves replacing your damaged thigh bone and hip joint with artificial parts, called a prosthesis. It helps relieve pain, improve mobility, and enhance your quality of life.

This service was performed 53 times for 49 patients

Therapy procedure using a special bandage and vacuum pump, surface area 50.0 sq cm or less

This procedure, known as Negative Pressure Wound Therapy, involves a special bandage and vacuum pump. The bandage covers your wound and the pump creates a vacuum, enhancing healing by removing excess fluid and promoting tissue growth. The surface area treated is 50.0 sq cm or less.

This service was performed 25 times for 24 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $20.73 for a new patient copayment and $16.84 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 99203

  • Average New Patient Price $82.92
  • Minimum New Patient Price $53.9
  • Maximum New Patient Price $163.24
  • Average New Patient Copayment $20.73
  • 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 99213

  • Average Established Patient Price $67.37
  • Minimum Established Patient Price $17.4
  • Maximum Established Patient Price $133.76
  • Average Established Patient Copayment $16.84
  • 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. Richard Illgen is affiliated with the following medical facilities:

Hospital Name Address Phone Hospital Type Overall Rating
UW HEALTH1401 EAST STATE STREET
ROCKFORD, IL 61104
(815) 968-4400Acute Care Hospitals
FORT MEMORIAL HOSPITAL611 SHERMAN AVE E
FORT ATKINSON, WI 53538
(920) 568-5000Acute Care Hospitals
UNITYPOINT HEALTH - MERITER202 S PARK ST
MADISON, WI 53715
(608) 417-6000Acute Care Hospitals
UNIVERSITY OF WI HOSPITALS & CLINICS AUTHORITY600 HIGHLAND AVENUE
MADISON, WI 53792
(608) 263-6400Acute Care Hospitals
STOUGHTON HOSPITAL900 RIDGE ST
STOUGHTON, WI 53589
(608) 873-6611Critical Access Hospitals

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NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1255395976, we treat the final digit (6) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 6).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
2
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
5
Unchanged
Pos 5
3
Doubled → 6
Pos 6
9
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
9
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
Check
6
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 5 → 10 → 1 3 → 6 5 → 10 → 1 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 2 + 1 + 0 + 5 + 6 + 9 + 1 + 0 + 9 + 1 + 4 + 24 = 64

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 64 is 70. The difference is the calculated check digit.

70 - 64 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1255395976.

Other Providers at the Same Location


The following 19 providers are registered at the same or a nearby location.

Emergency Medicine
600 HIGHLAND AVE
MADISON, WI 53792
Radiology (Diagnostic Radiology)
600 HIGHLAND AVE
MADISON, WI 53792
Neurological Surgery
600 HIGHLAND AVE
MADISON, WI 53792
Psychiatry & Neurology (Neurology)
600 HIGHLAND AVE
MADISON, WI 53792
Psychiatry & Neurology (Neurology)
600 HIGHLAND AVE
MADISON, WI 53792
Nurse Practitioner
600 HIGHLAND AVE
MADISON, WI 53792
Radiology (Diagnostic Radiology)
600 HIGHLAND AVE
MADISON, WI 53792
Physician Assistant
600 HIGHLAND AVE
MADISON, WI 53792
Nurse Anesthetist, Certified Registered
600 HIGHLAND AVE
MADISON, WI 53792
Radiology (Radiation Oncology)
600 HIGHLAND AVE
MADISON, WI 53792
Anesthesiology
600 HIGHLAND AVE
MADISON, WI 53792
Anesthesiology
600 HIGHLAND AVE
MADISON, WI 53792
Anesthesiology
600 HIGHLAND AVE
MADISON, WI 53792
Nurse Anesthetist, Certified Registered
600 HIGHLAND AVE
MADISON, WI 53792
Nurse Anesthetist, Certified Registered
600 HIGHLAND AVE
MADISON, WI 53792
Nurse Anesthetist, Certified Registered
600 HIGHLAND AVE
MADISON, WI 53792
Nurse Anesthetist, Certified Registered
600 HIGHLAND AVE
MADISON, WI 53792
Anesthesiology
600 HIGHLAND AVE
MADISON, WI 53792
Anesthesiology
600 HIGHLAND AVE
MADISON, WI 53792

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1255395976, enumerated as an "individual" on April 12, 2006.

The provider is located at 600 HIGHLAND AVE MADISON, WI 53792 and the phone number is (608) 263-7540.

Orthopaedic Surgery with taxonomy code 207X00000X.

The provider might be accepting Accepts: Anthem Blue Cross and Blue Shield, Aspirus Health. Please consult your insurance carrier or call the provider to verify.

Richard Illgen is affiliated with: UW HEALTH, FORT MEMORIAL HOSPITAL, UNITYPOINT HEALTH - MERITER, UNIVERSITY OF WI HOSPITALS & CLINICS AUTHORITY and STOUGHTON HOSPITAL.