Dr. John Thornton Fox , MD
Internal Medicine • Palatine, IL
500 N Hicks Rd, Ste 100
Palatine, IL 600673647
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 15, 2006; this date does not establish years in practice.
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Published CMS data list 751 Original Medicare Part B services in 2020.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020. Published rows only; this is not a quality measure.
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Published Part B service records, 2020:
- 99214 — Established patient outpatient office visit: 220 service units.
- 99213 — Established patient outpatient office visit: 144 service units.
- G0439 — Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit: 100 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2019 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2020). CPT notice
See all 10 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 28 Medicare Part D prescriptions, including refills, in 2021.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2021. Published rows only; this is not a quality measure.
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Published Part D records, 2021:
- Atorvastatin Calcium — 28 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2021. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table · Guide: How to read Medicare Part D prescriber data
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Medicare Part B services went from 2,088 in 2017 to 751 in 2020.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017–2020.
Practice Location & Contact Primary Location
500 N Hicks Rd
Ste 100
Palatine, IL 600673647
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $59,423 in 2020
The total amount Medicare approved for these services in 2020. 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 – by Provider and Service, 2020.
Paid by Medicare
About $40,360 in 2020
The part of the Medicare-allowed amount that Medicare itself paid in 2020, 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 – by Provider and Service, 2020.
30-day fills
78 standardized 30-day fills in 2021
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
$475 in 2021
The total cost of these prescriptions in 2021, 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 – by Provider and Drug, 2021.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $908.00 in 2021
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2021.
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, “Does your provider accept Medicare as full payment?”
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.
Compared with the same specialty in Palatine and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Fox are from 2020.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Fox are from 2021.
9 active clinicians are listed under Internal Medicine with a practice address in Palatine, IL (7,245 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.
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Medicare Part B services
Medicare Part B services decreased 64% from 2,088 in 2017 to 751 in 2020.
- 2017: 2,088
- 2018: 1,890
- 2019: 1,940
- 2020: 751
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Medicare-allowed amount
Medicare-allowed amount decreased 59% from $146,599 in 2017 to $59,423 in 2020.
- 2017: $146,599
- 2018: $142,770
- 2019: $136,269
- 2020: $59,423
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Paid by Medicare
Paid by Medicare decreased 65% from $116,205 in 2017 to $40,360 in 2020.
- 2017: $116,205
- 2018: $110,791
- 2019: $105,870
- 2020: $40,360
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 99% from 2,043 in 2017 to 28 in 2021.
- 2017: 2,043
- 2018: 2,462
- 2019: 2,919
- 2020: 1,970
- 2021: 28
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30-day fills
30-day fills decreased 98% from 4,369 in 2017 to 78 in 2021.
- 2017: 4,369
- 2018: 5,828
- 2019: 7,526
- 2020: 5,317
- 2021: 78
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Part D drug cost
Part D drug cost decreased 99% from $77,824 in 2017 to $475 in 2021.
- 2017: $77,824
- 2018: $93,788
- 2019: $119,861
- 2020: $87,431
- 2021: $475
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $42.34 in 2019 to $908.00 in 2021.
- 2019: $42.34
- 2021: $908.00
Sources: CMS Medicare Physician & Other Practitioners (2020), CMS Medicare Part D Prescribers (2021), CMS Open Payments (2021), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · 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 2021 (payments made January 1 – December 31, 2021): fewer than 11 records totaling $908.00.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Sanofi and Genzyme US Companies |
Consulting Fee
Cash or cash equivalent
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DUPIXENT | General | $908.00 |
Source: CMS Open Payments, program year 2021, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2019 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 – by Provider and Service data, 2017–2020; 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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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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220 | 169 | $207.00 | $116.07 |
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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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144 | 107 | $132.00 | $79.89 |
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G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
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100 | 100 | $309.00 | $124.13 |
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36415
Insertion of needle into vein for collection of blood sample
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87 | 81 | $15.00 | $2.95 |
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93000
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
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84 | 82 | $80.00 | $18.40 |
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90746
Hepatitis b vaccine, adult dosage (3 dose schedule)
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30 | 16 | $150.00 | $67.55 |
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G0010
Administration of hepatitis b vaccine
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30 | 16 | $25.00 | $17.47 |
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99495
Transitional care management services for problem of at least moderate complexity
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26 | 20 | $308.00 | $197.16 |
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82274
Stool analysis for blood, by fecal hemoglobin determination by immunoassay
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19 | 19 | $50.00 | $15.73 |
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G0009
Administration of pneumococcal vaccine
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11 | 11 | $25.00 | $17.49 |
Source: CMS Part B by Provider and Service, 2020; 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 2021.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 28 | 2,340 | $475.45 | 21 |
Source: CMS Part D by Provider and Drug, 2021; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2020-03-03NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Additional State Medicaid & Healthcare Payer Identifiers
Career & Practice History
NPI enumerated September 15, 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 Internal Medicine Providers in Palatine
- Dr. Javier Moreno, MD
- Dr. Janusz Srodulski, MD
- Dr. Todd Leverentz, MD
- Dr. Yolanda Escalona, DO
- Dr. Pamela Pope, MD
Mailing Address
500 N Hicks Rd, Ste 100
Palatine, IL 600673647
Phone: 8472218700