Dr. Catherine M Dudley , MD
Dermatology โข Aurora, IL
4100 Healthway Dr
Aurora, IL 605044163
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
NPI assigned on July 14, 2006; this date does not establish years in practice.
-
Published CMS data list 931 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
-
Published Part B service records, 2024:
- 17003 โ Destruction of precancer skin growth, 2-14 growths: 205 service units.
- 99213 โ Established patient outpatient office visit: 165 service units.
- 11102 โ Biopsy of related skin growth, first growth: 101 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 16 records in the table ยท Guide: How to read Medicare Part B data
-
Published CMS data list 321 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
-
Published Part D records, 2024:
- Hydrocortisone โ 76 prescription fills, including refills.
- Triamcinolone Acetonide โ 56 prescription fills, including refills.
- Betamethasone Diprop Augmented (Betamethasone/Propylene Glyc) โ 53 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 10 records in the table ยท Guide: How to read Medicare Part D prescriber data
-
Fewer Medicare Part B services than 70% of clinicians listed under Dermatology in Illinois (2024, 405 clinicians with data). Median for this group: 2,033. Middle half: 899 to 4,119.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
-
Medicare Part B services went from 923 in 2020 to 931 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
4100 Healthway Dr
Aurora, IL 605044163
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
Loyola University Of Chicago, Stritch School Of Medicine
1985
What Public CMS Data Show
Dermatology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
351 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $70,445 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $48,917 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
30-day fills
347 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$7,794 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024.
Open Payments general payments, program year 2023
All general payments: $30.54 across 2 records.
By nature of payment
- Education: $30.54 across 2 records.
Reporting-company totals
- Pfizer Inc.: $30.54 across 2 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2023 (published June 30, 2026).
Years since graduation
41 years (graduated 1985)
CMS Doctors and Clinicians data list 1985 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
May accept Medicare assignment
CMS data show this clinician may accept Medicare assignment. Clinicians who do not always accept assignment can decide case by case.
Ask the office before your visit. If a clinician does not accept assignment for a service, they can charge up to 15% more than the Medicare-approved amount, and you may be asked to pay the full amount at the visit.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Dudley has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Dudley as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Aurora and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 70% of clinicians listed under Dermatology in Illinois (2024, 405 clinicians with data). Median for this group: 2,033. Middle half: 899 to 4,119.
Too few clinicians listed under Dermatology in Aurora have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A lower Medicare-allowed amount than 70% of clinicians listed under Dermatology in Illinois (2024, 405 clinicians with data). Median for this group: $141,868. Middle half: $64,155 to $281,967.
Too few clinicians listed under Dermatology in Aurora have Medicare Part B data for 2024 to compare.
Paid by Medicare
A lower Medicare payment amount than 70% of clinicians listed under Dermatology in Illinois (2024, 405 clinicians with data). Median for this group: $99,602. Middle half: $44,437 to $204,261.
Too few clinicians listed under Dermatology in Aurora have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
Fewer Part D prescriptions than 60% of clinicians listed under Dermatology in Illinois (2024, 468 clinicians with data). Median for this group: 471. Middle half: 165 to 904.
Too few clinicians listed under Dermatology in Aurora have Medicare Part D data for 2024 to compare.
Part D drug cost
A lower Part D drug cost than 70% of clinicians listed under Dermatology in Illinois (2024, 468 clinicians with data). Median for this group: $69,576. Middle half: $5,709 to $275,598.
Too few clinicians listed under Dermatology in Aurora have Medicare Part D data for 2024 to compare.
7 active clinicians are listed under Dermatology with a practice address in Aurora, IL (647 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
-
Medicare Part B services
Medicare Part B services varied from year to year: 923 in 2020 and 931 in 2024.
- 2020: 923
- 2021: 1,224
- 2022: 1,094
- 2023: 1,017
- 2024: 931
-
Medicare-allowed amount
Medicare-allowed amount varied from year to year: $69,450 in 2020 and $70,445 in 2024.
- 2020: $69,450
- 2021: $101,859
- 2022: $86,315
- 2023: $78,560
- 2024: $70,445
-
Paid by Medicare
Paid by Medicare varied from year to year: $50,164 in 2020 and $48,917 in 2024.
- 2020: $50,164
- 2021: $73,878
- 2022: $58,551
- 2023: $55,339
- 2024: $48,917
-
Medicare Part D prescriptions
Medicare Part D prescriptions varied from year to year: 313 in 2020 and 321 in 2024.
- 2020: 313
- 2021: 472
- 2022: 476
- 2023: 376
- 2024: 321
-
30-day fills
30-day fills varied from year to year: 355 in 2020 and 347 in 2024.
- 2020: 355
- 2021: 512
- 2022: 519
- 2023: 422
- 2024: 347
-
Part D drug cost
Part D drug cost decreased 31% from $11,292 in 2020 to $7,794 in 2024.
- 2020: $11,292
- 2021: $17,684
- 2022: $123,066
- 2023: $314,420
- 2024: $7,794
-
Industry payments (Open Payments)
Industry payments (Open Payments) went from $182.05 in 2019 to $30.54 in 2023.
- 2019: $182.05
- 2020: $85.00
- 2023: $30.54
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2023), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2023 (payments made January 1 โ December 31, 2023): fewer than 11 records totaling $30.54.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Pfizer Inc. |
Education
In-kind items and services
|
CIBINQO | General | $15.27 |
| Pfizer Inc. |
Education
In-kind items and services
|
CIBINQO | General | $15.27 |
Source: CMS Open Payments, program year 2023, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2017โ2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
|
17003
Destruction of precancer skin growth, 2-14 growths
|
205 | 49 | $51.00 | $6.80 |
|
99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
165 | 140 | $198.00 | $93.41 |
|
11102
Biopsy of related skin growth, first growth
|
101 | 94 | $217.00 | $95.06 |
|
99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
|
84 | 84 | $249.00 | $115.50 |
|
17000
Destruction of precancer skin growth, 1 growth
|
80 | 68 | $204.00 | $52.17 |
|
17110
Destruction of skin growth, 1-14 growths
|
66 | 57 | $241.00 | $106.29 |
|
11103
Biopsy of related skin growth, each additional growth
|
55 | 40 | $116.00 | $51.86 |
|
99212
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
|
32 | 30 | $124.00 | $57.75 |
|
17262
Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm
|
30 | 26 | $425.00 | $163.25 |
|
11301
Shaving of skin growth of body, arms, or legs, 0.6-1.0 cm
|
21 | 20 | $262.00 | $101.52 |
|
99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
21 | 21 | $279.00 | $131.91 |
|
11311
Shaving of skin growth of face, ears, eyelids, nose, lips, or mouth, 0.6-1.0 cm
|
20 | 18 | $297.00 | $120.33 |
|
11302
Shaving of skin growth of body, arms, or legs, 1.1-2.0 cm
|
16 | 16 | $304.00 | $137.42 |
|
17263
Destruction of cancer skin growth of trunk, arms, or legs, 2.1-3.0 cm
|
13 | 12 | $469.00 | $192.26 |
|
11200
Removal of skin tag, 1-15 skin tags
|
11 | 11 | $201.00 | $65.54 |
|
99202
New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more
|
11 | 11 | $167.00 | $74.60 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Hydrocortisone | Hydrocortisone | 76 | 1,566 | $557.13 | 42 |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 56 | 1,224 | $329.05 | 44 |
| Betamethasone Diprop Augmented | Betamethasone/Propylene Glyc | 53 | 1,170 | $2,113.08 | 37 |
| Clobetasol Propionate | Clobetasol Propionate | 45 | 1,169 | $2,150.68 | 26 |
| Doxycycline Hyclate | Doxycycline Hyclate | 22 | 840 | $431.61 | โ |
| Fluorouracil | Fluorouracil | 19 | 545 | $944.74 | 18 |
| Ketoconazole | Ketoconazole | 14 | 422 | $33.51 | โ |
| Metronidazole | Metronidazole | 13 | 320 | $893.29 | 12 |
| Glycopyrrolate | Glycopyrrolate | 12 | 360 | $246.40 | โ |
| Cefadroxil | Cefadroxil | 11 | 125 | $94.86 | โ |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-06-17NUCC Taxonomy Code: 207N00000X
A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - DERMATOLOGY
I20100907000597
IL
5890819296
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine
Doctor of Medicine (M.D.)
Family Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Social Worker - Clinical
Master of Social Work, Licensed Clinical Social Worker
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine - Endocrinology, Diabetes & Metabolism
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 28594 NETWORK PL, CHICAGO, IL 606731285
NPI status registered as active in NPPES database
Registered at 2357 SEQUOIA DR, AURORA, IL 605066222 (Tel: 6308596800)
Registered at 4100 HEALTHWAY DR, AURORA, IL 605044163 (Tel: 6308513105)
Recorded as CATHERINE DUDLEY, MD
Dermatology (license number reported to NPPES: IL 036-074033)
NPI status registered as active in NPPES database
Registered at 4100 HEALTHWAY DR, AURORA, IL 605044163 (Tel: 6308513105)
Registered at 1870 W GALENA BLVD, AURORA, IL 605064356 (Tel: 6308596700)
Recorded as CATHERINE DUDLEY, MD
Dermatology (license number reported to NPPES: IL 036-074033)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Dermatology Specialists in Aurora
- Dr. Matthew Evans, MD
- Dr. Brendan Thomas, MD
- Dr. Zachary Solomon, MD
- Dr. Tanya Bulj, MD
- Dr. Arjun Dayal, MD
Mailing Address
28594 Network Pl
Chicago, IL 606731285