Antimicrob Steward Healthc Epidemiol
Dr. Carlos Roberto Mejia Chew, MD
NPI1063864155
- Medicare services, 2022
- 200
- Part D claims, 2023
- 71
- Publications
- 3
- Industry payments
- $518
- Affiliated sites
- 1
- Practice address
- 620 S Taylor Ave 100 Taylor Avenue Building Extension, Saint Louis, MO 63110-1035
- Practice phone
- Call (314) 363-9098
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Washington University - Primary Care - Saint Louis (S Taylor Ave)
Primary care practice · Saint Louis, Missouri
Find Dr. Mejia Chew'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. Carlos Roberto Mejia Chew is an infectious disease specialist in Belleville, Illinois
Dr. Mejia Chew practices at Washington University - Primary Care - Saint Louis (S Taylor Ave) in Saint Louis, Missouri.
Dr. Mejia Chew's NPI, 1063864155, was assigned on July 12, 2016. Dr. Mejia Chew holds Missouri license 2019024562.
NPI and contact details
- NPI
- 1063864155NPI Registry (opens in a new tab)
- NPI enumeration date
- July 12, 2016
- NPI status
- Active
- Practice phone
- (314) 363-9098
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Carlos Roberto Mejia Chew practices in Saint Louis and Belleville
Dr. Mejia Chew's primary practice is Washington University - Primary Care - Saint Louis (S Taylor Ave), at 620 S Taylor Ave 100 Taylor Avenue Building Extension, Saint Louis, MO 63110-1035. The practice phone is (314) 363-9098. The NPI Registry lists Dr. Mejia Chew's practice address as 4500 Memorial Dr, Belleville, IL 62226.
- Washington University - Primary Care - Saint Louis (S Taylor Ave)Primary620 S Taylor Ave 100 Taylor Avenue Building Extension, Saint Louis, MO 63110-1035Phone(314) 363-9098
- NPI Registry address4500 Memorial Dr, Belleville, IL 62226 · Saint Clair CountyPhone(314) 362-9098
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Carlos Roberto Mejia Chew is affiliated with 1 site of care and 1 medical group
Dr. Mejia Chew's primary practice is Washington University - Primary Care - Saint Louis (S Taylor Ave) in Saint Louis, Missouri. The medical group on file is WashU Medicine Psychiatry.
Washington University - Primary Care - Saint Louis (S Taylor Ave)Primary
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Carlos Roberto Mejia Chew's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mejia Chew practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Washington University - Primary Care - Saint Louis (S Taylor Ave) | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Carlos Roberto Mejia Chew is one of 400 infectious disease specialists in Illinois
Infectious disease is Dr. Mejia Chew's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Mejia Chew is licensed in Missouri.
Specialties and state licenses
- Infectious disease, MissouriPrimary
Infectious disease specialists near Dr. Mejia Chew
Counts of infectious disease specialists with a Dmand AI profile, by place and practice. Each opens the list.
400infectious disease specialists in Illinois
2infectious disease specialists in Belleville
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Carlos Roberto Mejia Chew billed Medicare for 200 services in 2022
CMS data shows 200 Medicare services from Dr. Mejia Chew across 7 procedure codes in 2022. Medicare paid $18,198 for them.
Medicare services, 2022200
Paid by Medicare$18,198
Procedure codes7
Dr. Mejia Chew's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 2502022: 20020%
Where Dr. Mejia Chew's Medicare services took place, 2022
- In an office11457%
- In a facility8643%
Dr. Mejia Chew compared with the Illinois median for infectious disease specialists, 2022
- Dr. Mejia Chew
- Illinois median
- Medicare services
- 200vs 44055% below
- Part D claims
- 71vs 19564% below
Medians across 383 infectious disease specialists in Illinois with Dmand AI profiles that report each measure.
Dr. Mejia Chew's most billed Medicare procedure codes, 2022
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. Mejia Chew and other infectious disease specialists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Carlos Roberto Mejia Chew's patients have a median age of 66
Across all payers, Dmand AI patient panel data puts Dr. Mejia Chew's median patient age at 66, with 0% women.
Dr. Mejia Chew's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Carlos Roberto Mejia Chew wrote 71 Medicare Part D claims in 2023
In 2023, Dr. Mejia Chew wrote 71 Medicare Part D claims. Every claim was for a generic drug. They cover 3 drugs, with $2,372 in total drug cost. In 2022, CMS named 536 claims across 15 drugs.
Part D claims, 202371
Drugs named by CMS3
Total drug cost$2,372
Dr. Mejia Chew's most prescribed drugs by claims, 2023
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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 5362023: 7187%
Drugs named by CMS: 3 in 2023, 15 in 2022.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Carlos Roberto Mejia Chew has 3 publications on record
Dmand AI links 3 papers to Dr. Mejia Chew, published from 2020 to 2024. Dr. Mejia Chew's most frequent co-authors are Melissa Lee Barger, MD, Patrick Rave Ching, MD, MPH and Keira Cohen, MD.
Papers3
Years published2020 to 2024
Dr. Mejia Chew's papers by year, 2020 to 2024
Dr. Mejia Chew's most frequent co-authors
- Melissa Lee Barger, MD1 shared paper
- Patrick Rave Ching, MD, MPH1 shared paper
- Keira Cohen, MD1 shared paper
Recent publications by Dr. Mejia Chew
See who Dr. Mejia Chew researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Mejia Chew works with, so you can find a warm path to the right infectious disease specialists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Carlos Roberto Mejia Chew received $518 in industry payments from 2018 to 2022
CMS Open Payments shows 9 general payments to Dr. Mejia Chew from 5 drug and device companies from 2018 to 2022. Education make up the largest share, 63% of the total. Astellas Pharma US Inc paid the most, $230.
General payments to Dr. Mejia Chew by program year, 2018 to 2022
General payments to Dr. Mejia Chew by kind, 2018 to 2022
$518in total
- Education$32863%
- Food and beverage$19037%
Companies that paid Dr. Mejia Chew the most, 2018 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Carlos Roberto Mejia Chew'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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) |
| 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. Carlos Roberto Mejia Chew
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. Carlos Roberto Mejia Chew's NPI number?
Dr. Carlos Roberto Mejia Chew's NPI number is 1063864155. It was assigned on July 12, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Carlos Roberto Mejia Chew?
Dr. Carlos Roberto Mejia Chew is an infectious disease specialist in Belleville, Illinois. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Dr. Carlos Roberto Mejia Chew practice?
Dr. Mejia Chew practices at 620 S Taylor Ave 100 Taylor Avenue Building Extension, Saint Louis, MO 63110-1035. Dr. Mejia Chew also practices at 4500 Memorial Dr, Belleville, IL 62226. Dr. Mejia Chew's primary practice is Washington University - Primary Care - Saint Louis (S Taylor Ave) in Saint Louis, Missouri.
What is Dr. Carlos Roberto Mejia Chew's office phone number?
The practice phone on file for Dr. Mejia Chew is (314) 363-9098.
What is Dr. Carlos Roberto Mejia Chew's medical license number?
Dr. Mejia Chew holds Missouri license 2019024562.
What medical group is Dr. Carlos Roberto Mejia Chew part of?
Dr. Mejia Chew is linked to WashU Medicine Psychiatry.
Does Dr. Carlos Roberto Mejia Chew accept Medicare?
Yes. CMS data shows Dr. Mejia Chew billed Medicare for 200 services in 2022.
What services does Dr. Carlos Roberto Mejia Chew bill to Medicare?
In 2022, Dr. Mejia Chew's most billed Medicare services were office visit, established patient (99215), hospital inpatient care (99231) and office visit, established patient (99214).
What drugs does Dr. Carlos Roberto Mejia Chew prescribe most?
In 2023 Medicare Part D data, Dr. Mejia Chew's most prescribed drugs by claims were Azithromycin, Ethambutol HCl and Rifampin.
Has Dr. Carlos Roberto Mejia Chew received payments from drug or device companies?
CMS Open Payments shows $518 in general payments to Dr. Mejia Chew from 5 companies from 2018 to 2022. The largest total came from Astellas Pharma US Inc.
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How long has Dr. Carlos Roberto Mejia Chew been practicing?
Dr. Mejia Chew graduated from medical school in 2008, 18 years ago.
Does Dr. Carlos Roberto Mejia Chew do research?
Dmand AI links 3 publications to Dr. Mejia Chew, published from 2020 to 2024.
Who does Dr. Carlos Roberto Mejia Chew publish with?
Dr. Mejia Chew's most frequent co-authors are Melissa Lee Barger, MD (1 shared paper), Patrick Rave Ching, MD, MPH (1 shared paper) and Keira Cohen, MD (1 shared paper).
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