DR. JOHN HEARN MD, MA
NPI 1912211343
Psychiatry & Neurology - Psychiatry in Saint Louis, MO
About Dr. John Hearn Md, Ma NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN HEARN MD, MA (NPI 1912211343) is an individual psychiatry provider in Saint Louis, Missouri, licensed in Missouri (2011034013) and active in the NPI registry since July 2010. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital Joplin, and is a graduate of Louisiana State University School Of Medicine In New Orleans (2010).
NPPES Registry Identity
Specialties & Licenses 2
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. John Hearn Md, Ma is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show John Hearn reassigns Medicare billing to 2 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
- 194 clinicians in this Medicare group
Chesterfield, MO 63017
- Reassigned Medicare billing, Missouri enrollment
- 263 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 2
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Hospital Joplin
Acute Care Hospitals · Joplin, MOMercy Hospital Stoddard
Acute Care Hospitals · Dexter, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63104 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 John Hearn's NPI number?
The NPI number for John Hearn is 1912211343. It was assigned to this individual provider in the NPPES registry on July 27, 2010.
Where is John Hearn located?
John Hearn practices at 1438 S Grand Blvd Dept Of, Saint Louis, MO 63104. The listed phone number is (314) 362-2462.
What is John Hearn's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is John Hearn enrolled in Medicare?
Yes. John Hearn is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for John Hearn's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Hearn reassigns Medicare benefits to 2 organizations: Slh Physicians LLC (Saint Louis, MO) and Mercy Aco Clinical Services Inc (Chesterfield, MO). 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 John Hearn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Hearn accept?
Health plans from Medica and UnitedHealthcare list John Hearn 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.
Is John Hearn affiliated with any hospitals?
According to CMS data, John Hearn is affiliated with Mercy Hospital Joplin and Mercy Hospital Stoddard.
When was this NPI record last updated?
The NPPES record for John Hearn was last updated on January 12, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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. John Hearn, MD, MA · NPI 1912211343
Psychiatry physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since July 27, 2010.
## Identity
- **NPI:** 1912211343 (Entity type: Individual)
- **Enumerated:** July 27, 2010
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** 2011034013 (Missouri)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1438 S GRAND BLVD DEPT OF, Saint Louis, MO 63104-1027
- **Phone:** (314) 362-2462
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Slh Physicians LLC (NPI 1881668051, Saint Louis, MO); Mercy Aco Clinical Services Inc (NPI 1063965093, Chesterfield, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Louisiana State University School Of Medicine In New Orleans, class of 2010
## Record status
- **NPPES last updated:** January 12, 2021
---
Source: [NPI Profile](https://npiprofile.com/npi/1912211343) · Data from the CMS NPPES public registry.