DR. IAN L PEARSON MD
NPI 1225490881
Psychiatry & Neurology - Child & Adolescent Psychiatry in Saint Louis, MO
About Dr. Ian L Pearson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. IAN L PEARSON MD (NPI 1225490881) is an individual child & adolescent psychiatry provider in Saint Louis, Missouri, licensed in Missouri (2019019615) and active in the NPI registry since March 2016. He is enrolled in Medicare PECOS and maintains 18 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 18
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Ian L Pearson Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
5Medicare enrollment records show Ian Pearson reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63110
- Reassigned Medicare billing, Missouri enrollment
- 148 clinicians in this Medicare group
Saint Louis, MO 63128
- Reassigned Medicare billing, Missouri enrollment
- Medicare enrollment name: St Anthonys Physician Organization Hospitalist Services Lc
- 340 clinicians in this Medicare group
Saint Louis, MO 63141
- Reassigned Medicare billing, Missouri enrollment
- 326 clinicians in this Medicare group
Springfield, MO 65804
- Reassigned Medicare billing, Missouri enrollment
- 590 clinicians in this Medicare group
Beachwood, OH 44122
- Reassigned Medicare billing, Missouri enrollment
- 113 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Ian Pearson's NPI number?
The NPI number for Ian Pearson is 1225490881. It was assigned to this individual provider in the NPPES registry on March 23, 2016.
Where is Ian Pearson located?
Ian Pearson practices at 4066 Dunnica Ave, Saint Louis, MO 63116. The listed phone number is (636) 224-1700.
What is Ian Pearson's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Child & Adolescent Psychiatry, with taxonomy code 2084P0804X.
Is Ian Pearson enrolled in Medicare?
Yes. Ian Pearson is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Ian Pearson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ian Pearson reassigns Medicare benefits to 5 organizations: Washington University (Saint Louis, MO), St Anthonys Physician Organization Hospitalist Services, L.C. (Saint Louis, MO), Mercy Clinic Adult Hospitalists - St. Louis, LLC (Saint Louis, MO), Burrell, Inc. (Springfield, MO) and Psychological & Behavioral Consultants, LLC (Beachwood, OH). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ian Pearson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ian Pearson accept?
Health plans from Anthem Blue Cross and Blue Shield, Medica, Oscar Insurance Company and UnitedHealthcare list Ian Pearson as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Ian Pearson was last updated on October 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Ian L Pearson, MD · NPI 1225490881
Child & Adolescent Psychiatry physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since March 23, 2016.
## Identity
- **NPI:** 1225490881 (Entity type: Individual)
- **Enumerated:** March 23, 2016
- **Primary specialty:** Psychiatry & Neurology - Child & Adolescent Psychiatry · taxonomy 2084P0804X
- **State license:** 2019019615 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 4066 DUNNICA AVE, Saint Louis, MO 63116-3510
- **Phone:** (636) 224-1700 · **Fax:** (314) 535-5917
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): Washington University (NPI 1003856592, Saint Louis, MO); St Anthonys Physician Organization Hospitalist Services, L.C. (NPI 1407216336, Saint Louis, MO); Mercy Clinic Adult Hospitalists - St. Louis, LLC (NPI 1841235108, Saint Louis, MO); Burrell, Inc. (NPI 1275541740, Springfield, MO); Psychological & Behavioral Consultants, LLC (NPI 1811915713, Beachwood, OH) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 7, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1225490881) · Data from the CMS NPPES public registry.