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Dr. Erin Kathleen O'Brien, MD

  • Lake In The Hills, IL
  • Pediatrician
NPI1437114394
Industry payments
$1,021
Affiliated sites
1
Medical group
1
State license
1
Year NPI issued
2006
Practice address
301 N Randall Rd, Lake In The Hills, IL 60156
Practice phone
Call (847) 658-6065
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Children's Medical Group, S.C.

Lake In The Hills, Illinois

See all 3 affiliations

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Dr. Erin Kathleen O'Brien is a pediatrician in Lake In The Hills, Illinois

Dr. O'Brien practices at Children's Medical Group, S.C. in Lake In The Hills, Illinois.

Dr. O'Brien's NPI, 1437114394, was assigned on April 20, 2006. Dr. O'Brien holds Illinois license 036-108-387.

NPI and contact details
NPI
1437114394NPI Registry (opens in a new tab)
NPI enumeration date
April 20, 2006
NPI status
Active
Practice phone
(847) 658-6065
Professional email
Get email
Personal email
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Mobile number
Get number
Sex
Female

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data

Dr. Erin Kathleen O'Brien practices at Children's Medical Group, S.C. in Lake In The Hills, Illinois

Dr. O'Brien's primary practice is Children's Medical Group, S.C., at 301 N Randall Rd, Lake In The Hills, IL 60156 in Mchenry County. The practice phone is (847) 658-6065.

  • Children's Medical Group, S.C.
    301 N Randall Rd, Lake In The Hills, IL 60156 · Mchenry CountyPhone(847) 658-6065

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Erin Kathleen O'Brien is affiliated with 2 sites of care and 1 medical group

Dr. O'Brien's primary practice is Children's Medical Group, S.C. in Lake In The Hills, Illinois. Dmand AI also links Dr. O'Brien to 1 group practice or clinic and 1 medical group, each named with a free account.

Children's Medical Group, S.C.Lake In The Hills, IllinoisPrimary
1 group practice or clinicName with a free account1 medical groupName with a free account
See all 3 affiliations for Dr. O'Brien

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Erin Kathleen O'Brien's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Brien practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Children's Medical Group, S.C.Available with a free account
+1 more site and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Erin Kathleen O'Brien is one of 2,423 pediatricians in Illinois

Pediatrics is Dr. O'Brien's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. O'Brien is licensed in Illinois.

Specialties and state licenses

  • Pediatrics, IllinoisPrimaryLicense 036-108-387 · taxonomy 208000000X

Pediatricians near Dr. O'Brien

Counts of pediatricians with a Dmand AI profile, by place and practice. Each opens the list.

2,423pediatricians in Illinois
4pediatricians in Lake In The Hills

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Erin Kathleen O'Brien's patients have a median age of 11

Across all payers, Dmand AI patient panel data puts Dr. O'Brien's median patient age at 11, with 51% women.

Dr. O'Brien's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 11

Patient panel by sex, all payers

  • Women51%
  • Men49%

Source: Dmand AI Patient Panel Data

Dr. Erin Kathleen O'Brien received $1,021 in industry payments from 2016 to 2025

CMS Open Payments shows 55 general payments to Dr. O'Brien from 15 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $258.

General payments to Dr. O'Brien by program year, 2016 to 2025

Companies that paid Dr. O'Brien the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. O'Brien

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Sources for Dr. Erin Kathleen O'Brien's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare patients and the all-payer patient panelDmand AI Patient Panel Data
Industry paymentsOpen Payments (CMS) (opens in a new tab)
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Erin Kathleen O'Brien

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. Erin Kathleen O'Brien's NPI number?

Dr. Erin Kathleen O'Brien's NPI number is 1437114394. It was assigned on April 20, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Erin Kathleen O'Brien?

Dr. Erin Kathleen O'Brien is a pediatrician in Lake In The Hills, Illinois. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).

Where does Dr. Erin Kathleen O'Brien practice?

Dr. O'Brien practices at 301 N Randall Rd, Lake In The Hills, IL 60156. Dr. O'Brien's primary practice is Children's Medical Group, S.C. in Lake In The Hills, Illinois. Dmand AI also links Dr. O'Brien to 1 group practice or clinic and 1 medical group.

What is Dr. Erin Kathleen O'Brien's office phone number?

The practice phone on file for Dr. O'Brien is (847) 658-6065.

What is Dr. Erin Kathleen O'Brien's medical license number?

Dr. O'Brien holds Illinois license 036-108-387.

Has Dr. Erin Kathleen O'Brien received payments from drug or device companies?

CMS Open Payments shows $1,021 in general payments to Dr. O'Brien from 15 companies from 2016 to 2025. The largest total came from Pfizer Inc.

How long has Dr. Erin Kathleen O'Brien been practicing?

Dr. O'Brien's NPI was assigned in 2006.

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