KARL E MARKERT DO
NPI 1245217868
Emergency Medicine - Emergency Medical Services in Tulsa, OK
About Karl E Markert Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KARL E MARKERT DO (NPI 1245217868) is an individual emergency medical services provider in Tulsa, Oklahoma, licensed in Oklahoma (4097) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Karl E Markert Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Karl Markert reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Tulsa, OK 74104
- Reassigned Medicare billing, Oklahoma enrollment
- 820 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 74104 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.
TULSA, OK 74104
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 Karl Markert's NPI number?
The NPI number for Karl Markert is 1245217868. It was assigned to this individual provider in the NPPES registry on December 23, 2005.
Where is Karl Markert located?
Karl Markert practices at 1705 E 19th St Suite 302, Tulsa, OK 74104. The listed phone number is (918) 748-7585.
What is Karl Markert's specialty?
The primary specialty registered for this NPI is Emergency Medicine, specializing in Emergency Medical Services, with taxonomy code 207PE0004X.
Is Karl Markert enrolled in Medicare?
Yes. Karl Markert is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Karl Markert's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karl Markert reassigns Medicare benefits to St. John Physicians, Inc. (Tulsa, OK). 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 Karl Markert's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Karl Markert was last updated on May 5, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Karl E Markert, DO · NPI 1245217868
Emergency Medical Services physician in Tulsa, Oklahoma. Individual provider, active in the CMS NPPES registry since December 23, 2005.
## Identity
- **NPI:** 1245217868 (Entity type: Individual)
- **Enumerated:** December 23, 2005
- **Primary specialty:** Emergency Medicine - Emergency Medical Services · taxonomy 207PE0004X
- **State license:** 4097 (Oklahoma)
- **Sole proprietor:** No
## Practice location
- **Address:** 1705 E 19TH ST, SUITE 302, Tulsa, OK 74104-5405
- **Phone:** (918) 748-7585
## 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:** St. John Physicians, Inc. (NPI 1336194406, Tulsa, OK), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 5, 2008
- **Other identifiers:** Medicare UPIN I13744
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Source: [NPI Profile](https://npiprofile.com/npi/1245217868) · Data from the CMS NPPES public registry.