CHARLES ROBERT HARTMAN JR. DO
NPI 1205819034
Surgery in Lake St Louis, MO
About Charles Robert Hartman Jr. Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHARLES ROBERT HARTMAN JR. DO (NPI 1205819034) is an individual surgery provider in Lake St Louis, Missouri, licensed in Missouri (R5P00) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS, is affiliated with Ssm St Joseph Hospital West, and maintains a secondary practice location in Lake St Louis.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
Accepted Insurance
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
Charles Robert Hartman Jr. Do 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 Reassignment
Medicare enrollment records show Charles Hartman reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
O Fallon, MO 63366
- Reassigned Medicare billing, Missouri enrollment
- 697 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 4
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ssm St Joseph Hospital West
Acute Care Hospitals · Lake Saint Louis, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63367 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 9
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LAKE SAINT LOUIS, MO 63367
LAKE ST LOUIS, MO 63367
LAKE ST LOUIS, MO 63367
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 Charles Hartman's NPI number?
The NPI number for Charles Hartman is 1205819034. It was assigned to this individual provider in the NPPES registry on November 25, 2005.
Where is Charles Hartman located?
Charles Hartman practices at 300 Medical Plz Ste 310, Lake St Louis, MO 63367. The listed phone number is (636) 625-2662.
What is Charles Hartman's specialty?
The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.
Is Charles Hartman enrolled in Medicare?
Yes. Charles Hartman 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 organization bills Medicare for Charles Hartman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Charles Hartman reassigns Medicare benefits to Ssm Medical Group, Inc. (O Fallon, MO). The 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 Charles Hartman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Charles Hartman accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan, Ambetter of Oklahoma and Ambetter of Tennessee and 2 other insurers list Charles Hartman 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 Charles Hartman affiliated with any hospitals?
According to CMS data, Charles Hartman is affiliated with Ssm St Joseph Hospital West.
When was this NPI record last updated?
The NPPES record for Charles Hartman was last updated on November 4, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Charles Robert Hartman Jr., DO · NPI 1205819034
Surgery physician in Lake St Louis, Missouri. Individual provider, active in the CMS NPPES registry since November 25, 2005.
## Identity
- **NPI:** 1205819034 (Entity type: Individual)
- **Enumerated:** November 25, 2005
- **Primary specialty:** Surgery · taxonomy 208600000X
- **State license:** R5P00 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 MEDICAL PLZ STE 310, Lake St Louis, MO 63367-1484
- **Phone:** (636) 625-2662
## 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:** Ssm Medical Group, Inc. (NPI 1851896146, O Fallon, MO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** At Still University Of Health Sciences, College Of Osteo Med, Kirksville, class of 1990
## Record status
- **NPPES last updated:** November 4, 2020
- **Other identifiers:** Medicaid 248492001 (MO)
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Source: [NPI Profile](https://npiprofile.com/npi/1205819034) · Data from the CMS NPPES public registry.