Dr. Adnan Ansari , DO
Internal Medicine โข Olympia Fields, IL
20201 Crawford Ave
Olympia Fields, IL 604611010
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. Adnan Ansari is listed in NPPES under Internal Medicine.
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NPI assigned on April 20, 2021; this date does not establish years in practice.
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Published CMS data list 228 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:
- 99233 โ Subsequent hospital care with moderate levelof medical decision making: 120 service units.
- 99232 โ Subsequent hospital care with moderate levelof medical decision making: 55 service units.
- 99239 โ Hospital discharge day management: 38 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 4 records in the table ยท Guide: How to read Medicare Part B data
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Fewer Medicare Part B services than 85% of clinicians listed under Internal Medicine in Olympia Fields, IL (2024, 15 clinicians with data). Median for this group: 680. Middle half: 363 to 1,168.
Fewer Medicare Part B services than 75% 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 โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
Practice Location & Contact Primary Location
20201 Crawford Ave
Olympia Fields, IL 604611010
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 3 distinct group names: Community Home Physicians Llc; Galen Inpatient Physicians Pc; Prime Healthcare Illinois Medical Group Llc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
Lincoln Mem Univ, Debusk Col Of Osteopathic Med
2021
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
70 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 $26,344 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 $20,990 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.
Open Payments general payments, program year 2025
All general payments: $143.15 across 2 records.
By nature of payment
- Food and Beverage: $143.15 across 2 records.
Reporting-company totals
- AstraZeneca Pharmaceuticals LP: $121.89 across 1 record.
- Bristol Myers Squibb Company: $21.26 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).
Years since graduation
5 years (graduated 2021)
CMS Doctors and Clinicians data list 2021 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
2021
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; 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. Ansari 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. Ansari 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 Olympia Fields and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 85% of clinicians listed under Internal Medicine in Olympia Fields, IL (2024, 15 clinicians with data). Median for this group: 680. Middle half: 363 to 1,168.
Fewer Medicare Part B services than 75% 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.
Medicare-allowed amount
A lower Medicare-allowed amount than 85% of clinicians listed under Internal Medicine in Olympia Fields, IL (2024, 15 clinicians with data). Median for this group: $61,256. Middle half: $45,920 to $88,195.
A lower Medicare-allowed amount than 75% of 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.
Paid by Medicare
A lower Medicare payment amount than 85% of clinicians listed under Internal Medicine in Olympia Fields, IL (2024, 15 clinicians with data). Median for this group: $48,466. Middle half: $28,328 to $69,227.
A lower Medicare payment amount than 75% of 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.
22 active clinicians are listed under Internal Medicine with a practice address in Olympia Fields, IL (7,195 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Olympia Fields
13.6% of these 22 clinicians have the CMS telehealth indicator.
72.7% of these 22 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
CMS data for Medicare Part B services are available for 2024 only.
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Medicare-allowed amount
CMS data for Medicare-allowed amount are available for 2024 only.
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Paid by Medicare
CMS data for Medicare payment amount are available for 2024 only.
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $19.71 in 2022 to $143.15 in 2025.
- 2022: $19.71
- 2025: $143.15
Sources: CMS Medicare Physician & Other Practitioners (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 $143.15.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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AIRSUPRA | General | $121.89 |
| Bristol Myers Squibb Company |
Food and Beverage
Cash or cash equivalent
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ELIQUIS | General | $21.26 |
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 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 โ by Provider and Service data, 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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99233
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
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120 | 42 | $683.00 | $122.56 |
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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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55 | 31 | $474.00 | $81.48 |
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99239
Hospital discharge day management, more than 30 minutes
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38 | 36 | $704.00 | $117.69 |
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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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15 | 15 | $1331.00 | $178.87 |
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.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-04-22NUCC 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.
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.
NUCC Taxonomy Code: 208M00000X
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20240827001989
IL
5092117408
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
Community Home Physicians Llc
1 S450 Summit Ave, Oakbrook Terrace, IL 601813952
Phone: 6303206871
Prime Healthcare Illinois Medical Group Llc
100 N River Rd, Des Plaines, IL 600161209
Phone: 8472971800
Prime Healthcare Illinois Medical Group Llc
2233 W Division St, Chicago, IL 606228151
Phone: 3127702000
Galen Inpatient Physicians Pc
901 Macarthur Blvd, Munster, IN 463212901
Phone: 2198361600
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Emergency Medicine
Doctor of Osteopathic Medicine (D.O.)
Orthopaedic Surgery
Doctor of Osteopathic Medicine (D.O.)
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Emergency Medicine
Doctor of Osteopathic Medicine (D.O.)
Emergency Medicine
Doctor of Osteopathic Medicine (D.O.)
Thoracic Surgery (Cardiothoracic Vascular Surgery)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Internal Medicine (license number reported to NPPES: IN 02008332A)
Internal Medicine (license number reported to NPPES: IL 036171127)
NPI status registered as active in NPPES database
Registered at 20201 CRAWFORD AVE, OLYMPIA FIELDS, IL 604611010 (Tel: 7087474000)
Registered at 349 LECLAIRE AVE, WILMETTE, IL 600912945 (Tel: 8478526476)
Recorded as ADNAN ANSARI, DO
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Olympia Fields
- Dr. Muhammad Choudry, MD
- Hannia Farooqi
- Dr. Sanjeev Joshi, MD
- Dr. Syed Zahir, DO
- Dr. Aamir Mohiuddin, DO
- Dr. Mohammed Hussain, MD
Mailing Address
349 Leclaire Ave
Wilmette, IL 600912945
Phone: 8478526476