Dr. Chandler S. Barnes, MD
- Medicare services, 2020
- 17
- Part D claims, 2024
- 48
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 520 S Maple Ave, Oak Park, IL 60304
- Practice phone
- Call (708) 799-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Advocate South Suburban Hospital
Oak Park, Illinois
Find Dr. Barnes' 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. Chandler S. Barnes is an emergency medicine physician in Oak Park, Illinois
Dr. Barnes practices at Advocate South Suburban Hospital in Oak Park, Illinois.
Dr. Barnes' NPI, 1013938554, was assigned on July 21, 2006. Dr. Barnes graduated from Rush Medical College of Rush University in 1985. Dr. Barnes holds Illinois license 036073028.
- NPI
- 1013938554NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2668521196
- NPI enumeration date
- July 21, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (708) 799-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Chandler S. Barnes practices at Advocate South Suburban Hospital in Oak Park, Illinois
Dr. Barnes' primary practice is Advocate South Suburban Hospital, at 520 S Maple Ave, Oak Park, IL 60304 in Cook County. The practice phone is (708) 799-8000.
- Advocate South Suburban Hospital520 S Maple Ave, Oak Park, IL 60304 · Cook CountyPhone(708) 799-8000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Chandler S. Barnes is affiliated with 2 sites of care and 1 medical group
Dr. Barnes' primary practice is Advocate South Suburban Hospital in Oak Park, Illinois. The medical group on file is Stickney Public Health District. Dmand AI also links Dr. Barnes to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Chandler S. Barnes' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Barnes practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Advocate South Suburban Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Chandler S. Barnes is one of 2,385 emergency medicine physicians in Illinois
Emergency medicine is Dr. Barnes' primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Barnes is licensed in Illinois.
Specialties and state licenses
- Emergency medicine, IllinoisPrimary
Emergency medicine physicians near Dr. Barnes
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Chandler S. Barnes billed Medicare for 17 services in 2020
CMS data shows 17 Medicare services from Dr. Barnes across 1 procedure code in 2020, all of them office visits. Medicare paid $596 for them. Every service was in an office.
Dr. Barnes' Medicare services by type, 2019 to 2020
- 2019
- 2020
- Office and hospital visits
- 2019: 862020: 1780%
Dr. Barnes compared with the Illinois median for emergency medicine physicians, 2020
- Dr. Barnes
- Illinois median
- Medicare services
- 17vs 27494% below
- Part D claims
- 13vs 4571% below
Medians across 2,281 emergency medicine physicians in Illinois with Dmand AI profiles that report each measure.
Dr. Barnes' most billed Medicare procedure codes, 2020
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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Chandler S. Barnes' patients have a median age of 46
Across all payers, Dmand AI patient panel data puts Dr. Barnes' median patient age at 46, with 100% women.
Dr. Barnes' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 46
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Chandler S. Barnes wrote 48 Medicare Part D claims in 2024
In 2024, Dr. Barnes wrote 48 Medicare Part D claims for 14 patients. 92% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $176 in total drug cost. In 2019, CMS named 11 claims across 1 drug.
Dr. Barnes' Part D claims by kind of drug, 2024
- Generic44 claims92%
- Brand-name and other4 claims8%
Dr. Barnes' most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2019 to 2021
- 2019
- 2021
- Claims for drugs CMS names
- 2019: 112021: 1318%
Drugs named by CMS: 1 in 2021, 1 in 2019.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Chandler S. Barnes takes part in Medicare
Dr. Barnes 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. Chandler S. Barnes graduated from Rush Medical College of Rush University
Dr. Barnes graduated from Rush Medical College of Rush University in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Chandler S. Barnes'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Chandler S. Barnes
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. Chandler S. Barnes' NPI number?
Dr. Chandler S. Barnes' NPI number is 1013938554. It was assigned on July 21, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Chandler S. Barnes?
Dr. Chandler S. Barnes is an emergency medicine physician in Oak Park, Illinois. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Chandler S. Barnes practice?
Dr. Barnes practices at 520 S Maple Ave, Oak Park, IL 60304. Dr. Barnes' primary practice is Advocate South Suburban Hospital in Oak Park, Illinois. Dmand AI also links Dr. Barnes to 1 group practice or clinic.
What is Dr. Chandler S. Barnes' office phone number?
The practice phone on file for Dr. Barnes is (708) 799-8000.
What is Dr. Chandler S. Barnes' medical license number?
Dr. Barnes holds Illinois license 036073028.
What medical group is Dr. Chandler S. Barnes part of?
Dr. Barnes is linked to Stickney Public Health District.
Does Dr. Chandler S. Barnes accept Medicare?
Yes. CMS data shows Dr. Barnes billed Medicare for 17 services in 2020, and Dr. Barnes accepts Medicare assignment.
What services does Dr. Chandler S. Barnes bill to Medicare?
In 2020, Dr. Barnes' most billed Medicare services were office visit, established patient (99213).
Where did Dr. Chandler S. Barnes go to medical school?
Dr. Barnes graduated from Rush Medical College of Rush University in 1985.
What drugs does Dr. Chandler S. Barnes prescribe most?
In 2021 Medicare Part D data, Dr. Barnes' most prescribed drugs by claims were Atorvastatin Calcium.
How long has Dr. Chandler S. Barnes been practicing?
Dr. Barnes graduated from medical school in 1985, 41 years ago.
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