Dr. Mathai Karingada , MD
Internal Medicine • Oak Brook, IL
900 Jorie Blvd, Suite 186
Oak Brook, IL 605232213
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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Dr. Mathai Karingada is listed in NPPES under Internal Medicine.
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NPI assigned on June 23, 2006; this date does not establish years in practice.
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Published CMS data list 921 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99232 — Subsequent hospital care with moderate levelof medical decision making: 592 service units.
- 99239 — Hospital discharge day management: 159 service units.
- 99222 — Initial hospital care with straightforward or low-level medical decision making: 94 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® 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 5 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 764 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Furosemide — 150 prescription fills, including refills.
- Pantoprazole Sodium — 108 prescription fills, including refills.
- Atorvastatin Calcium — 106 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 18 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 60% of clinicians listed under Internal Medicine in Illinois (2024, 3,231 clinicians with data). Median for this group: 696. Middle half: 284 to 1,352.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 1,268 in 2020 to 921 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
900 Jorie Blvd
Suite 186
Oak Brook, IL 605232213
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Cgh Medical Center. See the list
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
2001
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
288 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 – by Provider, 2024.
Medicare-allowed amount
About $82,290 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 – by Provider and Service, 2024.
Paid by Medicare
About $65,485 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 – by Provider and Service, 2024.
30-day fills
766 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
$1,978 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 – by Provider and Drug, 2024.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019–2025.
Years since graduation
25 years (graduated 2001)
CMS Doctors and Clinicians data list 2001 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, CMS release of October 2, 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.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
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, CMS release of October 2, 2026; 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, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Dr. Karingada 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. Karingada 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 Oak Brook and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 60% of clinicians listed under Internal Medicine in Illinois (2024, 3,231 clinicians with data). Median for this group: 696. Middle half: 284 to 1,352.
Too few clinicians listed under Internal Medicine in Oak Brook have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
Close to the middle for clinicians listed under Internal Medicine in Illinois (2024, 3,231 clinicians with data). Median for this group: $67,573. Middle half: $27,616 to $124,710.
Too few clinicians listed under Internal Medicine in Oak Brook have Medicare Part B data for 2024 to compare.
Paid by Medicare
Close to the middle for clinicians listed under Internal Medicine in Illinois (2024, 3,231 clinicians with data). Median for this group: $52,732. Middle half: $21,099 to $98,198.
Too few clinicians listed under Internal Medicine in Oak Brook have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Internal Medicine in Illinois (2024, 3,708 clinicians with data). Median for this group: 1,080. Middle half: 101 to 4,782.
Too few clinicians listed under Internal Medicine in Oak Brook have Medicare Part D data for 2024 to compare.
Part D drug cost
A lower Part D drug cost than 75% of clinicians listed under Internal Medicine in Illinois (2024, 3,708 clinicians with data). Median for this group: $82,134. Middle half: $2,821 to $375,574.
Too few clinicians listed under Internal Medicine in Oak Brook have Medicare Part D data for 2024 to compare.
16 active clinicians are listed under Internal Medicine with a practice address in Oak Brook, IL (7,195 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Oak Brook
25% of these 16 clinicians have the CMS telehealth indicator.
50% of these 16 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 decreased 27% from 1,268 in 2020 to 921 in 2024.
- 2020: 1,268
- 2021: 1,203
- 2022: 921
- 2023: 1,026
- 2024: 921
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Medicare-allowed amount
Medicare-allowed amount decreased 24% from $108,795 in 2020 to $82,290 in 2024.
- 2020: $108,795
- 2021: $101,619
- 2022: $79,008
- 2023: $98,900
- 2024: $82,290
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Paid by Medicare
Paid by Medicare decreased 25% from $87,138 in 2020 to $65,485 in 2024.
- 2020: $87,138
- 2021: $80,298
- 2022: $62,201
- 2023: $78,500
- 2024: $65,485
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 74% from 439 in 2020 to 764 in 2024.
- 2020: 439
- 2021: 391
- 2022: 249
- 2023: 312
- 2024: 764
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30-day fills
30-day fills increased 74% from 439 in 2020 to 766 in 2024.
- 2020: 439
- 2021: 391
- 2022: 250
- 2023: 314
- 2024: 766
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Part D drug cost
Part D drug cost decreased 66% from $5,778 in 2020 to $1,978 in 2024.
- 2020: $5,778
- 2021: $3,244
- 2022: $1,775
- 2023: $7,194
- 2024: $1,978
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 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, 2017–2024; 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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99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
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592 | 197 | $472.97 | $76.44 |
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99239
Hospital discharge day management, more than 30 minutes
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159 | 151 | $765.29 | $109.66 |
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99222
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
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94 | 92 | $1032.21 | $127.19 |
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99238
Hospital discharge day management, 30 minutes or less
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57 | 56 | $476.89 | $78.17 |
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99223
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
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19 | 19 | $1259.26 | $167.89 |
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 |
|---|---|---|---|---|---|
| Furosemide | Furosemide | 150 | 1,050 | $251.40 | 21 |
| Pantoprazole Sodium | Pantoprazole Sodium | 108 | 559 | $179.35 | — |
| Atorvastatin Calcium | Atorvastatin Calcium | 106 | 515 | $148.12 | — |
| Pioglitazone Hcl | Pioglitazone Hcl | 101 | 365 | $173.91 | — |
| Levofloxacin | Levofloxacin | 38 | 222 | $155.86 | 37 |
| Famotidine | Famotidine | 37 | 129 | $44.41 | — |
| Prednisone | Prednisone | 36 | 189 | $108.56 | 33 |
| Trazodone Hcl | Trazodone Hcl | 35 | 160 | $97.15 | — |
| Simvastatin | Simvastatin | 21 | 115 | $83.29 | — |
| Sertraline Hcl | Sertraline Hcl | 20 | 610 | $122.90 | — |
| Olanzapine | Olanzapine | 20 | 85 | $91.57 | — |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 18 | 134 | $121.23 | 17 |
| Azithromycin | Azithromycin | 15 | 66 | $67.13 | 15 |
| Metoprolol Tartrate | Metoprolol Tartrate | 13 | 391 | $63.43 | 11 |
| Clopidogrel | Clopidogrel Bisulfate | 12 | 344 | $60.12 | 12 |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 12 | 101 | $45.03 | 12 |
| Levetiracetam | Levetiracetam | 11 | 318 | $128.35 | — |
| Amiodarone Hcl | Amiodarone Hcl | 11 | 305 | $36.63 | — |
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
NUCC 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.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20060828000041
IL
7618971045
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
Cgh Medical Center
100 E Le Fevre Rd, Sterling, IL 610811278
Phone: 8156250400
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 - Adolescent Medicine
Doctor of Medicine (M.D.)
Hospitalist
Doctor of Osteopathic Medicine (D.O.)
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine - Adolescent Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated June 23, 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 November 2026.
NPI Administrative Meta
Other Internal Medicine Providers in Oak Brook
- Dr. Suman Narumanchi, MD
- Dr. Nancy Tran, MD
- Dr. Susan Woo, MD
- Dr. Mohammed Shabbir, MD
- Dr. Meera Madappallil, MD
- Dr. Emily Tuerk, MD
Mailing Address
900 Jorie Blvd, Suite 186
Oak Brook, IL 605232213
Phone: 6309546700