MARGARET L JOHNSON CRNA
NPI 1558337576
Nurse Anesthetist, Certified Registered in Chattanooga, TN
About Margaret L Johnson Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET L JOHNSON CRNA (NPI 1558337576) is an individual nurse anesthetist, certified registered in Chattanooga, Tennessee, licensed in Tennessee (APN090336) and active in the NPI registry since February 2006. She is affiliated with Memorial Healthcare System, Inc and is a graduate of Other (1994).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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 and accepts Medicare assignment
Margaret L Johnson Crna 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 Margaret Johnson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Chattanooga, TN 37411
- Reassigned Medicare billing, Georgia and Tennessee enrollments
- 242 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Memorial Healthcare System, Inc
Acute Care Hospitals · Chattanooga, TNPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 37404 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.
CHATTANOOGA, TN 37404
CHATTANOOGA, TN 37404
CHATTANOOGA, TN 37404
CHATTANOOGA, TN 37404
CHATTANOOGA, TN 37404
CHATTANOOGA, TN 37404
CHATTANOOGA, TN 37404
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 Margaret Johnson's NPI number?
The NPI number for Margaret Johnson is 1558337576. It was assigned to this individual provider in the NPPES registry on February 28, 2006.
Where is Margaret Johnson located?
Margaret Johnson practices at 2341 Mccallie Ave Suite 402, Chattanooga, TN 37404. The listed phone number is (423) 698-3309.
What is Margaret Johnson's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Margaret Johnson enrolled in Medicare?
Yes. Margaret Johnson 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 Margaret Johnson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Johnson reassigns Medicare benefits to Memorial Health Partners Foundation, Inc (Chattanooga, TN). 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 Margaret Johnson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Margaret Johnson accept?
Health plans from Alliant Health Plans, Inc. list Margaret Johnson 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 Margaret Johnson affiliated with any hospitals?
According to CMS data, Margaret Johnson is affiliated with Memorial Healthcare System, Inc.
When was this NPI record last updated?
The NPPES record for Margaret Johnson was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Margaret L Johnson, CRNA · NPI 1558337576
Nurse Anesthetist, Certified Registered physician in Chattanooga, Tennessee. Individual provider, active in the CMS NPPES registry since February 28, 2006.
## Identity
- **NPI:** 1558337576 (Entity type: Individual)
- **Enumerated:** February 28, 2006
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** APN090336 (Tennessee)
- **Sole proprietor:** No
## Practice location
- **Address:** 2341 MCCALLIE AVE, SUITE 402, Chattanooga, TN 37404-3239
- **Phone:** (423) 698-3309 · **Fax:** (423) 624-6355
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** Memorial Health Partners Foundation, Inc (NPI 1922053545, Chattanooga, TN), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1994
## Record status
- **NPPES last updated:** July 13, 2026
- **Other identifiers:** Other 3053427 (TN); Medicaid 3622456 (TN)
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Source: [NPI Profile](https://npiprofile.com/npi/1558337576) · Data from the CMS NPPES public registry.