Ian Leonard Pearson, MD
Child & Adolescent Psychiatry Physician · Saint Louis, MO
Ian Leonard Pearson, MD is a child & adolescent psychiatry physician with a practice address in Saint Louis, Missouri, and NPI 1225490881, issued on Mar 23, 2016. Check the license (Missouri 2019019615, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Ian Leonard Pearson
- Credential
- MD
- Primary taxonomy
- Child & Adolescent Psychiatry Physician 2084P0804X
- License number
- 2019019615 MO
Self-reported in NPPES; status is on the state search - Practice location
- 4066 Dunnica Ave, Saint Louis, MO 63116
- Phone
- (636) 224-1700
- Enumerated
- Mar 23, 2016
- Record last updated
- Jul 28, 2026
- Fax
- (314) 535-5917
- Medicare enrollment
- Enrolled (PECOS I20201016001417); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 2016
- Entity
- Type 1 · individual
8 nearest child & adolescent psychiatry physician records → All 155 in Missouri → Look up another NPI →
Also registered at 4066 Dunnica Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mario AguilarProfessional Counselor1457959702
- Kathryn AngellRegistered Nurse1649714817
- Louis AppelmanClinical Social Worker1477930394
- Clayton Bailey, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1720716707
- Jack Barnett, LCSWClinical Social Worker1225196207
- Tashina BennettNurse Practitioner1124662655
Verify Ian Leonard Pearson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2019019615Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
11% fewer Medicare Part D claims than the average child & adolescent psychiatry physician in 2024
451 Medicare Part D claims for 27 beneficiaries, against an average of 504 among the 3,545 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims.
Most prescribed
- Dextroamphetamine-Amphetamine100 claims
- Dextroamphetamine-Amphet Er34 claims
- Prazosin Hcl28 claims
- Bupropion Xl27 claims
- Sertraline Hcl25 claims
- Gabapentin24 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Preferred Family Healthcare IncSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ian Leonard Pearson among 155 child & adolescent psychiatry physician records in Missouri
Ian Leonard Pearson, MD is one of 155 child & adolescent psychiatry physician records with a practice address in Missouri. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 76% of them.
- NPI issued2016 · 76% of these records are older, 21% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated2016 · median 2004 among the 65 with a school on file
- Record last updated2026 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0804X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Child & Adolescent Psychiatry Physician providers in Missouri
There are 155 child & adolescent psychiatry physician records in Missouri.
All 155 in Missouri → Every provider in Saint Louis → Child & Adolescent Psychiatry Physician nationwide →
The 8 child & adolescent psychiatry physician records with the nearest ZIP codes
- Annemarie Loth, M.D.Webster Groves, MO 631191700046869
- Joshua Calhoun, M.D.Saint Louis, MO 631121922140409
- Annie Chang, MDSaint Louis, MO 631101568032936
- Petra Lipsmeyer, M.D.Saint Louis, MO 631101215960596
- Ginger Nicol, MDSaint Louis, MO 631101285709980
- Hetal PatelSaint Louis, MO 631101225654734
- Christina Simon, MDSaint Louis, MO 631101427217116
- Afshan Sultana, MDSaint Louis, MO 631101073631099
Common questions
What is Ian Leonard Pearson, MD's NPI number?
Ian Leonard Pearson, MD's National Provider Identifier (NPI) is 1225490881, issued on Mar 23, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Ian Leonard Pearson, MD located?
The NPPES record lists a practice address at 4066 Dunnica Ave, Saint Louis, MO, 63116. Phone: (636) 224-1700. Providers update this record themselves, so call before visiting.
How can I verify Ian Leonard Pearson, MD's license?
NPPES lists Missouri license number 2019019615, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ian Leonard Pearson, MD prescribe under Medicare Part D?
In 2024, Ian Leonard Pearson, MD had 451 Medicare Part D claims for 27 beneficiaries; the average among child & adolescent psychiatry physician prescribers was 504. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.