Dr. Robert Louis Quaas, MD
- Industry payments
- $674
- Affiliated sites
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice locations
- 2
- Practice address
- 4550 Memorial Dr Ste 260 Suite 260, Belleville, IL 62226-5359
- Practice phone
- Call (618) 236-6336
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Children's Medical Associates, Ltd.
Physician office · Belleville, Illinois
Find Dr. Quaas' 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. Robert Louis Quaas is a pediatrician in Saint Louis, Missouri
Dr. Quaas practices at Children's Medical Associates, Ltd. in Belleville, Illinois.
Dr. Quaas' NPI, 1598777971, was assigned on August 13, 2006. Dr. Quaas holds Illinois license 036057570.
- NPI
- 1598777971NPI Registry (opens in a new tab)
- NPI enumeration date
- August 13, 2006
- NPI status
- Active
- Practice phone
- (618) 236-6336
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Robert Louis Quaas practices in Belleville and Saint Louis
Dr. Quaas' primary practice is Children's Medical Associates, Ltd., at 4550 Memorial Dr Ste 260 Suite 260, Belleville, IL 62226-5359. The practice phone is (618) 236-6336. The NPI Registry lists Dr. Quaas' practice address as 1 Childrens Pl, Saint Louis, MO 63110.
- Children's Medical Associates, Ltd.Primary4550 Memorial Dr Ste 260 Suite 260, Belleville, IL 62226-5359Phone(618) 236-6336
- NPI Registry address1 Childrens Pl, Saint Louis, MO 63110 · Saint Louis CityPhone(618) 236-6336
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Robert Louis Quaas is affiliated with 1 site of care
Dr. Quaas' primary practice is Children's Medical Associates, Ltd. in Belleville, Illinois.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Robert Louis Quaas' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Quaas practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Children's Medical Associates, Ltd. | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert Louis Quaas is one of 1,158 pediatricians in Missouri
Pediatrics is Dr. Quaas' primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Quaas is licensed in Illinois.
Specialties and state licenses
- Pediatrics, IllinoisPrimary
Pediatricians near Dr. Quaas
Counts of pediatricians 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. Robert Louis Quaas' patients have a median age of 20
Across all payers, Dmand AI patient panel data puts Dr. Quaas' median patient age at 20, with 42% women.
Dr. Quaas' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 20
Patient panel by sex, all payers
- Women42%
- Men58%
Source: Dmand AI Patient Panel Data
Dr. Robert Louis Quaas received $674 in industry payments from 2016 to 2020
CMS Open Payments shows 42 general payments to Dr. Quaas from 11 drug and device companies from 2016 to 2020. Food and beverage make up the largest share, 100% of the total. GlaxoSmithKline, LLC. paid the most, $275.
General payments to Dr. Quaas by program year, 2016 to 2020
Companies that paid Dr. Quaas the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Robert Louis Quaas'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 DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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. Robert Louis Quaas
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. Robert Louis Quaas' NPI number?
Dr. Robert Louis Quaas' NPI number is 1598777971. It was assigned on August 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert Louis Quaas?
Dr. Robert Louis Quaas is a pediatrician in Saint Louis, Missouri. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. Robert Louis Quaas practice?
Dr. Quaas practices at 4550 Memorial Dr Ste 260 Suite 260, Belleville, IL 62226-5359. Dr. Quaas also practices at 1 Childrens Pl, Saint Louis, MO 63110. Dr. Quaas' primary practice is Children's Medical Associates, Ltd. in Belleville, Illinois.
What is Dr. Robert Louis Quaas' office phone number?
The practice phone on file for Dr. Quaas is (618) 236-6336.
What is Dr. Robert Louis Quaas' medical license number?
Dr. Quaas holds Illinois license 036057570.
Has Dr. Robert Louis Quaas received payments from drug or device companies?
CMS Open Payments shows $674 in general payments to Dr. Quaas from 11 companies from 2016 to 2020. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Robert Louis Quaas been practicing?
Dr. Quaas' NPI was assigned in 2006.
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