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Dr. Ravi Varkki Chacko, MD, PhD
NPI1861953374PAC ID0042696957
- Medicare services, 2024
- 121
- Medicare patients, 2024
- 130
- Part D claims, 2024
- 18
- Publications
- 9
- Hospital affiliations
- 1
- Practice address
- 4440 W 95th Street, Oak Lawn, IL 60453
- Practice phone
- Call (708) 684-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chacko's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Ravi Varkki Chacko is an emergency medicine physician in Oak Lawn, Illinois
Dr. Chacko practices at Advocate Christ Medical Center in Oak Lawn, Illinois, part of Advocate Health.
Dr. Chacko's NPI, 1861953374, was assigned on March 27, 2019. Dr. Chacko holds Illinois license 036-162102.
NPI and contact details
- NPI
- 1861953374NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0042696957
- NPI enumeration date
- March 27, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (708) 684-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ravi Varkki Chacko practices at Advocate Christ Medical Center in Oak Lawn, Illinois
Dr. Chacko's primary practice is Advocate Christ Medical Center, at 4440 W 95th Street, Oak Lawn, IL 60453 in Cook County. The practice phone is (708) 684-8000.
- Advocate Christ Medical Center4440 W 95th Street, Oak Lawn, IL 60453 · Cook CountyPhone(708) 684-8000
Source: Dmand AI Affiliation Data
Dr. Ravi Varkki Chacko is affiliated with 2 sites of care and 5 medical groups
Dr. Chacko's primary practice is Advocate Christ Medical Center in Oak Lawn, Illinois, part of Advocate Health. The medical group on file is Dreyer Medical Clinic (Advocate Medical Group). Dmand AI also links Dr. Chacko to 4 more medical groups and 1 group practice or clinic, each named with a free account.
Dreyer Medical Clinic (Advocate Medical Group)4 medical groupsNames with a free account1 group practice or clinicName with a free account
See all 7 affiliations for Dr. ChackoSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ravi Varkki Chacko's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chacko practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Advocate Christ Medical Center | Available with a free account |
| +1 more site and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ravi Varkki Chacko is one of 2,385 emergency medicine physicians in Illinois
Emergency medicine is Dr. Chacko's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Chacko is licensed in Illinois.
Specialties and state licenses
- Emergency medicine, IllinoisPrimary
Emergency medicine physicians near Dr. Chacko
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
2,385emergency medicine physicians in Illinois58emergency medicine physicians in Oak Lawn53emergency medicine physicians at Advocate Christ Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ravi Varkki Chacko billed Medicare for 121 services in 2024
CMS data shows 121 Medicare services from Dr. Chacko across 2 procedure codes in 2024, for 130 Medicare patients. Medicare paid $13,839 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024121
Medicare patients130
Paid by Medicare$13,839
Procedure codes2
Dr. Chacko's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1422024: 12115%
Dr. Chacko compared with the Illinois median for emergency medicine physicians, 2024
- Dr. Chacko
- Illinois median
- Medicare services
- 121vs 27456% below
- Medicare patients
- 130vs 27352% below
Medians across 2,281 emergency medicine physicians in Illinois with Dmand AI profiles that report each measure.
Dr. Chacko's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chacko and other emergency medicine physicians in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ravi Varkki Chacko treated 130 Medicare patients in 2024, average age 75
CMS counts 130 Medicare patients who saw Dr. Chacko in 2024. The largest group is 65 to 74, with 41 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 37% are also on Medicaid. Their average risk score is 2.85, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Chacko's median patient age at 72, with 57% women.
Medicare patients, 2024130
Average age75
Average risk score2.85
Also on Medicaid37%
Dr. Chacko's Medicare patients by age, 2024
Dr. Chacko's Medicare patients by sex, 2024
- Women8263%
- Men4837%
Chronic conditions among Dr. Chacko's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Chronic kidney disease51%
- Diabetes48%
- Heart failure48%
- Ischemic heart disease48%
- Anxiety36%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chacko's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women57%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ravi Varkki Chacko wrote 18 Medicare Part D claims in 2024
In 2024, Dr. Chacko wrote 18 Medicare Part D claims for 14 patients. 94% of them were for generic drugs.
Part D claims, 202418
Part D patients14
Dr. Chacko's Part D claims by kind of drug, 2024
- Generic17 claims94%
- Brand-name and other1 claims6%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Ravi Varkki Chacko takes part in Medicare
Dr. Chacko accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ravi Varkki Chacko has 9 publications on record
Dmand AI links 9 papers to Dr. Chacko, published from 2016 to 2025. 2017 was the busiest year, with 2. The most frequent topics are Amygdala, Attention and Brain. Dr. Chacko's most frequent co-authors are Maurizio Corbetta, MD, Nico Urs Felix Dosenbach, MD and Timothy Otto Laumann, MD.
Papers9
Years published2016 to 2025
Dr. Chacko's papers by year, 2016 to 2025
Topics Dr. Chacko writes about most
- Amygdala
- Attention
- Brain
- COVID-19
- Heart Rate
- Macaca mulatta
- Magnetic Resonance Imaging
- Neural Pathways
Dr. Chacko's most frequent co-authors
- Maurizio Corbetta, MD2 shared papers
- Nico Urs Felix Dosenbach, MD2 shared papers
- Timothy Otto Laumann, MD2 shared papers
Recent publications by Dr. Chacko
West J Emerg Med
CannulaCOVID-19Emergency Service, Hospital
Health Informatics J
AlcoholismAnxietyCOVID-19
AttentionBrain WavesCerebral Cortex
See who Dr. Chacko researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chacko works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ravi Varkki Chacko received $5,000 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Chacko from 1 drug or device company in 2023. Consulting fees make up the largest share, 100% of the total. Turing Medical Technologies paid the most, $5,000.
Companies that paid Dr. Chacko the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Ravi Varkki Chacko's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Ravi Varkki Chacko
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Ravi Varkki Chacko's NPI number?
Dr. Ravi Varkki Chacko's NPI number is 1861953374. It was assigned on March 27, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Ravi Varkki Chacko?
Dr. Ravi Varkki Chacko is an emergency medicine physician in Oak Lawn, Illinois. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Ravi Varkki Chacko practice?
Dr. Chacko practices at 4440 W 95th Street, Oak Lawn, IL 60453. Dr. Chacko's primary practice is Advocate Christ Medical Center in Oak Lawn, Illinois, part of Advocate Health. Dmand AI also links Dr. Chacko to 4 medical groups and 1 group practice or clinic.
What is Dr. Ravi Varkki Chacko's office phone number?
The practice phone on file for Dr. Chacko is (708) 684-8000.
What is Dr. Ravi Varkki Chacko's medical license number?
Dr. Chacko holds Illinois license 036-162102.
Which hospitals is Dr. Ravi Varkki Chacko affiliated with?
Dr. Chacko practices at Advocate Christ Medical Center in Oak Lawn, Illinois.
What medical group is Dr. Ravi Varkki Chacko part of?
Dr. Chacko is linked to Dreyer Medical Clinic (Advocate Medical Group). Dmand AI links Dr. Chacko to 4 more medical groups.
Does Dr. Ravi Varkki Chacko accept Medicare?
Yes. CMS data shows Dr. Chacko billed Medicare for 121 services in 2024, and Dr. Chacko accepts Medicare assignment.
How many Medicare patients does Dr. Ravi Varkki Chacko see?
CMS counts 130 Medicare patients who saw Dr. Chacko in 2024, with an average age of 75.
What services does Dr. Ravi Varkki Chacko bill to Medicare?
In 2024, Dr. Chacko's most billed Medicare services were emergency department visit (99285) and emergency department visit (99284).
Show 4 more questionsShow fewer questions
Has Dr. Ravi Varkki Chacko received payments from drug or device companies?
CMS Open Payments shows $5,000 in general payments to Dr. Chacko from 1 company from 2023 to 2023. The largest total came from Turing Medical Technologies.
How long has Dr. Ravi Varkki Chacko been practicing?
Dr. Chacko graduated from medical school in 2019, 7 years ago.
Does Dr. Ravi Varkki Chacko do research?
Dmand AI links 9 publications to Dr. Chacko, published from 2016 to 2025.
Who does Dr. Ravi Varkki Chacko publish with?
Dr. Chacko's most frequent co-authors are Maurizio Corbetta, MD (2 shared papers), Nico Urs Felix Dosenbach, MD (2 shared papers) and Timothy Otto Laumann, MD (2 shared papers).
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