DR. ANN KATHRYN PEARSON MD
NPI 1841825932
Emergency Medicine in Saint Louis, MO
About Dr. Ann Kathryn Pearson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ANN KATHRYN PEARSON MD (NPI 1841825932) is an individual emergency medicine provider in Saint Louis, Missouri, licensed in Missouri (2026017347) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS, is affiliated with Missouri Baptist Medical Center, and is a graduate of University Of Nebraska College Of Medicine (2021).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Ann Kathryn Pearson Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show Ann Pearson reassigns Medicare billing to 4 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
- 156 clinicians in this Medicare group
Saint Louis, MO 63136
- Reassigned Medicare billing, Missouri enrollment
- 114 clinicians in this Medicare group
New York, NY 10017
- Reassigned Medicare billing, New York enrollment
- 208 clinicians in this Medicare group
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- 325 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.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Missouri Baptist Medical Center
Acute Care Hospitals · Town And Country, MOBarnes-Jewish West County Hospital
Acute Care Hospitals · Creve Coeur, MOMount Sinai St Luke's Roosevelt Hospital
Acute Care Hospitals · New York, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63110 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
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 Ann Pearson's NPI number?
The NPI number for Ann Pearson is 1841825932. It was assigned to this individual provider in the NPPES registry on March 9, 2020.
Where is Ann Pearson located?
Ann Pearson practices at 1 Barnes Jewish Hospital Plz Dept Emergency Med, Saint Louis, MO 63110. The listed phone number is (314) 362-9123.
What is Ann Pearson's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Ann Pearson enrolled in Medicare?
Yes. Ann Pearson is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Ann Pearson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ann Pearson reassigns Medicare benefits to 4 organizations: Washington University (Saint Louis, MO), Washington University Community Specialists, LLC (Saint Louis, MO), Icahn School Of Medicine At Mount Sinai (New York, NY) and Icahn School Of Medicine At Mount Sinai (New York, NY). 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 Ann Pearson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Ann Pearson affiliated with any hospitals?
According to CMS data, Ann Pearson is affiliated with Missouri Baptist Medical Center, Barnes-Jewish West County Hospital and Mount Sinai St Luke's Roosevelt Hospital.
When was this NPI record last updated?
The NPPES record for Ann Pearson was last updated on August 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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. Ann Kathryn Pearson, MD · NPI 1841825932
Emergency Medicine physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since March 9, 2020.
## Identity
- **NPI:** 1841825932 (Entity type: Individual)
- **Enumerated:** March 9, 2020
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 2026017347 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 BARNES JEWISH HOSPITAL PLZ, DEPT EMERGENCY MED, Saint Louis, MO 63110-1003
- **Phone:** (314) 362-9123 · **Fax:** (314) 362-0478
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Washington University (NPI 1104866656, Saint Louis, MO); Washington University Community Specialists, LLC (NPI 1922812254, Saint Louis, MO); Icahn School Of Medicine At Mount Sinai (NPI 1679083984, New York, NY); Icahn School Of Medicine At Mount Sinai (NPI 1477899078, New York, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Nebraska College Of Medicine, class of 2021
## Record status
- **NPPES last updated:** August 11, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1841825932) · Data from the CMS NPPES public registry.