Dr. Judith P. Knox , MD
Dermatology โข Springfield, IL
1025 S 6th St
Springfield, IL 627032403
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on September 20, 2006; this date does not establish years in practice.
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Published CMS data list 5,172 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.
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Published Part B service records, 2024:
- 17003 โ Destruction of precancer skin growth, 2-14 growths: 2,603 service units.
- 99213 โ Established patient outpatient office visit: 785 service units.
- 17000 โ Destruction of precancer skin growth, 1 growth: 667 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 21 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 884 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.
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Published Part D records, 2024:
- Triamcinolone Acetonide โ 121 prescription fills, including refills.
- Doxycycline Hyclate โ 108 prescription fills, including refills.
- Clobetasol Propionate โ 100 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 20 records in the table ยท Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 90% of clinicians listed under Dermatology in Springfield, IL (2024, 17 clinicians with data). Median for this group: 2,681. Middle half: 1,939 to 4,356.
More Medicare Part B services than 80% 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.
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Medicare Part B services went from 5,184 in 2020 to 5,172 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
1025 S 6th St
Springfield, IL 627032403
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Dermatology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
844 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 $245,942 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 $178,441 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
954 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
$25,823 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 2025
All general payments: $157.34 across 6 records.
By nature of payment
- Food and Beverage: $157.34 across 6 records.
Reporting-company totals (3 largest of 4)
- ABBVIE INC.: $87.56 across 3 records.
- Organon LLC: $32.18 across 1 record.
- Novartis Pharmaceuticals Corporation: $24.09 across 1 record.
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 2025 (published June 30, 2026).
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.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
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. Knox 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. Knox 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 Springfield and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 90% of clinicians listed under Dermatology in Springfield, IL (2024, 17 clinicians with data). Median for this group: 2,681. Middle half: 1,939 to 4,356.
More Medicare Part B services than 80% of clinicians listed under Dermatology in Illinois (2024, 405 clinicians with data). Median for this group: 2,033. Middle half: 899 to 4,119.
Medicare-allowed amount
A higher Medicare-allowed amount than 85% of clinicians listed under Dermatology in Springfield, IL (2024, 17 clinicians with data). Median for this group: $161,605. Middle half: $80,148 to $210,110.
A higher 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.
Paid by Medicare
A higher Medicare payment amount than 85% of clinicians listed under Dermatology in Springfield, IL (2024, 17 clinicians with data). Median for this group: $115,029. Middle half: $56,991 to $144,545.
A higher 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.
Medicare Part D prescriptions
More Part D prescriptions than 65% of clinicians listed under Dermatology in Springfield, IL (2024, 22 clinicians with data). Median for this group: 490. Middle half: 34 to 1,178.
More Part D prescriptions than 70% of clinicians listed under Dermatology in Illinois (2024, 468 clinicians with data). Median for this group: 471. Middle half: 165 to 904.
Part D drug cost
A lower Part D drug cost than 65% of clinicians listed under Dermatology in Springfield, IL (2024, 22 clinicians with data). Median for this group: $220,206. Middle half: $2,334 to $651,945.
Close to the middle for clinicians listed under Dermatology in Illinois (2024, 468 clinicians with data). Median for this group: $69,576. Middle half: $5,709 to $275,598.
36 active clinicians are listed under Dermatology with a practice address in Springfield, IL (647 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Springfield
0% of these 36 clinicians have the CMS telehealth indicator.
44.4% of these 36 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services stayed about the same: 5,184 in 2020 and 5,172 in 2024.
- 2020: 5,184
- 2021: 5,743
- 2022: 5,049
- 2023: 5,296
- 2024: 5,172
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Medicare-allowed amount
Medicare-allowed amount stayed about the same: $228,491 in 2020 and $245,942 in 2024.
- 2020: $228,491
- 2021: $284,059
- 2022: $251,700
- 2023: $252,144
- 2024: $245,942
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Paid by Medicare
Paid by Medicare varied from year to year: $164,321 in 2020 and $178,441 in 2024.
- 2020: $164,321
- 2021: $210,837
- 2022: $180,593
- 2023: $184,728
- 2024: $178,441
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 69% from 522 in 2020 to 884 in 2024.
- 2020: 522
- 2021: 671
- 2022: 788
- 2023: 953
- 2024: 884
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30-day fills
30-day fills increased 58% from 605 in 2020 to 954 in 2024.
- 2020: 605
- 2021: 780
- 2022: 882
- 2023: 1,047
- 2024: 954
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Part D drug cost
Part D drug cost decreased 13% from $29,515 in 2020 to $25,823 in 2024.
- 2020: $29,515
- 2021: $30,074
- 2022: $108,137
- 2023: $154,115
- 2024: $25,823
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $238.57 in 2019 to $157.34 in 2025.
- 2019: $238.57
- 2020: $156.87
- 2023: $98.24
- 2024: $290.81
- 2025: $157.34
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), 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 2025 (payments made January 1 โ December 31, 2025): fewer than 11 records totaling $157.34.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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SKYRIZI | General | $33.62 |
| Organon LLC |
Food and Beverage
In-kind items and services
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HADLIMA | General | $32.18 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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SKYRIZI | General | $32.06 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
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COSENTYX | General | $24.09 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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RINVOQ | General | $21.88 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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OTEZLA | General | $13.51 |
Source: CMS Open Payments, program year 2025, 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 |
|---|---|---|---|---|
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17003
Destruction of precancer skin growth, 2-14 growths
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2,603 | 416 | $40.00 | $6.22 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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785 | 638 | $413.32 | $88.44 |
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17000
Destruction of precancer skin growth, 1 growth
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667 | 520 | $301.00 | $50.75 |
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11102
Biopsy of related skin growth, first growth
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312 | 278 | $470.00 | $87.50 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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213 | 176 | $583.19 | $124.90 |
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17261
Destruction of cancer skin growth of trunk, arms, or legs, 0.6-1.0 cm
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65 | 54 | $485.49 | $125.64 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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65 | 65 | $517.00 | $106.21 |
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17262
Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm
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60 | 51 | $589.67 | $160.28 |
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17281
Destruction of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 0.6-1.0 cm
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59 | 51 | $633.76 | $166.53 |
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11103
Biopsy of related skin growth, each additional growth
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55 | 49 | $232.00 | $47.79 |
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17110
Destruction of skin growth, 1-14 growths
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52 | 51 | $356.00 | $100.36 |
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17004
Destruction of precancer skin growth, 15 or more growths
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42 | 32 | $882.00 | $158.66 |
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17282
Destruction of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm
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27 | 23 | $800.89 | $183.33 |
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99212
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
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27 | 26 | $258.22 | $54.83 |
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J3301
Injection, triamcinolone acetonide, not otherwise specified, 10 mg
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27 | 16 | $8.00 | $0.96 |
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11104
Punch biopsy, first skin growth
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24 | 24 | $553.00 | $116.17 |
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17271
Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 0.6-1.0 cm
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24 | 23 | $546.75 | $153.84 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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19 | 19 | $772.00 | $164.17 |
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11900
Injection into skin growth, 1-7 growths
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17 | 15 | $386.00 | $38.96 |
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12032
Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm
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17 | 16 | $971.76 | $273.09 |
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17272
Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm
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12 | 12 | $643.33 | $182.33 |
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 |
|---|---|---|---|---|---|
| Triamcinolone Acetonide | Triamcinolone Acetonide | 121 | 2,737 | $267.57 | 78 |
| Doxycycline Hyclate | Doxycycline Hyclate | 108 | 2,585 | $1,260.33 | 71 |
| Clobetasol Propionate | Clobetasol Propionate | 100 | 2,512 | $4,374.68 | 76 |
| Fluorouracil | Fluorouracil | 97 | 2,599 | $7,694.57 | 81 |
| Metronidazole | Metronidazole | 90 | 2,678 | $4,038.35 | 62 |
| Desonide | Desonide | 59 | 1,239 | $1,965.01 | 46 |
| Fluticasone Propionate | Fluticasone Propionate | 56 | 1,077 | $601.24 | 44 |
| Mupirocin | Mupirocin | 46 | 849 | $165.57 | 32 |
| Acyclovir | Acyclovir | 31 | 942 | $107.96 | 18 |
| Hydrocortisone | Hydrocortisone | 24 | 583 | $108.41 | 18 |
| Clindamycin Phosphate | Clindamycin Phosphate | 24 | 855 | $504.06 | 13 |
| Econazole Nitrate | Econazole Nitrate | 18 | 510 | $492.73 | โ |
| Doxycycline Monohydrate | Doxycycline Monohydrate | 16 | 314 | $231.76 | 14 |
| Terbinafine Hcl | Terbinafine Hcl | 16 | 345 | $82.66 | 14 |
| Prednisone | Prednisone | 15 | 278 | $77.84 | 12 |
| Fluocinonide | Fluocinonide | 15 | 362 | $347.65 | 12 |
| Minocycline Hcl | Minocycline Hcl | 15 | 339 | $335.18 | โ |
| Fluconazole | Fluconazole | 11 | 25 | $34.89 | 11 |
| Clobetasol Emollient | Clobetasol Propionate/Emoll | 11 | 330 | $2,651.11 | โ |
| Fluocinolone Acetonide | Fluocinolone Acetonide | 11 | 306 | $481.58 | 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: 2020-05-21NUCC 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
I20060116000393
IL
7911927421
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.
Nurse Practitioner - Family
Advanced Practice Registered Nurse
Internal Medicine - Interventional Cardiology
Doctor of Medicine (M.D.)
Nurse Practitioner - Family
Nurse Anesthetist, Certified Registered
Certified Registered Nurse Anesthetist
Pediatrics
Physician Assistant
Physician Assistant (Certified)
Career & Practice History
NPI enumerated September 20, 2006.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Dermatology Specialists in Springfield
- Dr. Katherine Stealey, MD
- Dr. Elle Davis, MD
- Dr. Adam Berry, MD
- Dr. Taylor Tennill, MD
- Dr. Jeave Reserva, MD
- Dr. Kenneth Minielly, MD
Mailing Address
1025 S 6th St
Springfield, IL 627032403
Phone: 2175287541