Dr. Ian Leonard Pearson, MD
- Part D claims, 2024
- 451
- Hospital affiliations
- 1
- Industry payments
- $251
- Medical groups
- 6
- State license
- 1
- Practice address
- One Childrens Place, Saint Louis, MO 63110
- Practice phone
- Call (314) 454-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Pearson'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. Ian Leonard Pearson is a child and adolescent psychiatrist in Saint Louis, Missouri
Dr. Pearson practices at St. Louis Children's Hospital in Saint Louis, Missouri, part of BJC Health.
Dr. Pearson's NPI, 1225490881, was assigned on March 23, 2016. Dr. Pearson graduated from Rush Medical College of Rush University in 2016. Dr. Pearson holds Missouri license 2019019615.
- NPI
- 1225490881NPI Registry (opens in a new tab)
- NPI enumeration date
- March 23, 2016
- NPI status
- Active
- Practice phone
- (314) 454-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Ian Leonard Pearson practices at 2 locations in Saint Louis, Missouri
Dr. Pearson's primary practice is St. Louis Children's Hospital, at One Childrens Place, Saint Louis, MO 63110 in St. Louis City. The practice phone is (314) 454-6000. Dr. Pearson also practices at St Louis Childrens Hospital, 1 Childrens Pl, Saint Louis, MO 63110.
- St. Louis Children's HospitalPrimaryOne Childrens Place, Saint Louis, MO 63110 · St. Louis CityPhone(314) 454-6000
- St Louis Childrens Hospital1 Childrens Pl, Saint Louis, MO 63110 · Saint Louis CityPhone(314) 454-6000
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Ian Leonard Pearson is affiliated with 2 sites of care and 6 medical groups
Dr. Pearson's primary practice is St. Louis Children's Hospital in Saint Louis, Missouri, part of BJC Health. The medical group on file is WashU Medicine Psychiatry. Dmand AI also links Dr. Pearson to 5 more medical groups and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ian Leonard Pearson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Pearson practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St. Louis Children's Hospital | Available with a free account |
| +1 more site and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across BJC Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Ian Leonard Pearson is one of 112 childs and adolescent psychiatrists in Missouri
Child and adolescent psychiatry is Dr. Pearson's primary specialty in the NPI Registry, under taxonomy code 2084P0804X. Dr. Pearson is licensed in Missouri.
Specialties and state licenses
- Child and adolescent psychiatry, MissouriPrimary
Childs and adolescent psychiatrists near Dr. Pearson
Counts of childs and adolescent psychiatrists 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. Ian Leonard Pearson's patients have a median age of 17
Across all payers, Dmand AI patient panel data puts Dr. Pearson's median patient age at 17, with 49% women.
Dr. Pearson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 17
Patient panel by sex, all payers
- Women49%
- Men51%
Source: Dmand AI Patient Panel Data
Dr. Ian Leonard Pearson wrote 451 Medicare Part D claims in 2024
In 2024, Dr. Pearson wrote 451 Medicare Part D claims for 27 patients. 96% of them were for generic drugs. CMS names the drug for 337 of them, across 13 drugs with 11 or more claims each, at $8,079 in total drug cost. In 2023, CMS named 440 claims across 17 drugs.
Dr. Pearson's Part D claims by kind of drug, 2024
- Generic431 claims96%
- Brand-name20 claims4%
Dr. Pearson's most prescribed drugs by claims, 2024
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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4402024: 33723%
Drugs named by CMS: 13 in 2024, 17 in 2023.
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
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Dr. Ian Leonard Pearson received $251 in industry payments from 2017 to 2021
CMS Open Payments shows 3 general payments to Dr. Pearson from 2 drug and device companies from 2017 to 2021. Food and beverage make up the largest share, 100% of the total. Otsuka America Pharmaceutical, Inc. paid the most, $238.
General payments to Dr. Pearson by program year, 2017 to 2021
Companies that paid Dr. Pearson the most, 2017 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ian Leonard Pearson graduated from Rush Medical College of Rush University
Dr. Pearson graduated from Rush Medical College of Rush University in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ian Leonard Pearson'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 DataDmand AI Org Hierarchy Data |
| 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) |
| Industry payments | Open Payments (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. Ian Leonard Pearson
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. Ian Leonard Pearson's NPI number?
Dr. Ian Leonard Pearson's NPI number is 1225490881. It was assigned on March 23, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Ian Leonard Pearson?
Dr. Ian Leonard Pearson is a child and adolescent psychiatrist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Child & Adolescent Psychiatry Physician (taxonomy code 2084P0804X).
Where does Dr. Ian Leonard Pearson practice?
Dr. Pearson practices at One Childrens Place, Saint Louis, MO 63110. Dr. Pearson also practices at 1 Childrens Pl, Saint Louis, MO 63110. Dr. Pearson's primary practice is St. Louis Children's Hospital in Saint Louis, Missouri, part of BJC Health. Dmand AI also links Dr. Pearson to 5 medical groups and 1 group practice or clinic.
What is Dr. Ian Leonard Pearson's office phone number?
The practice phone on file for Dr. Pearson is (314) 454-6000.
What is Dr. Ian Leonard Pearson's medical license number?
Dr. Pearson holds Missouri license 2019019615.
Which hospitals is Dr. Ian Leonard Pearson affiliated with?
Dr. Pearson practices at St. Louis Children's Hospital in Saint Louis, Missouri.
What medical group is Dr. Ian Leonard Pearson part of?
Dr. Pearson is linked to WashU Medicine Psychiatry. Dmand AI links Dr. Pearson to 5 more medical groups.
Where did Dr. Ian Leonard Pearson go to medical school?
Dr. Pearson graduated from Rush Medical College of Rush University in 2016.
What drugs does Dr. Ian Leonard Pearson prescribe most?
In 2024 Medicare Part D data, Dr. Pearson's most prescribed drugs by claims were Dextroamphetamine-Amphetamine, Dextroamphetamine-Amphet ER and Prazosin HCl.
Has Dr. Ian Leonard Pearson received payments from drug or device companies?
CMS Open Payments shows $251 in general payments to Dr. Pearson from 2 companies from 2017 to 2021. The largest total came from Otsuka America Pharmaceutical, Inc.
How long has Dr. Ian Leonard Pearson been practicing?
Dr. Pearson graduated from medical school in 2016, 10 years ago.
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