DR. ADRIENNE SIZER JOHNSON CRNA, DNP
NPI 1275754285
Nurse Anesthetist, Certified Registered in Jackson, MS
About Dr. Adrienne Sizer Johnson Crna, Dnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ADRIENNE SIZER JOHNSON CRNA, DNP (NPI 1275754285) is an individual nurse anesthetist, certified registered in Jackson, Mississippi, licensed in Mississippi (R866793) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS, is affiliated with University Of Mississippi Med Center, and is a graduate of Other (2006).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 5
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
Dr. Adrienne Sizer Johnson Crna, Dnp 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
9Medicare enrollment records show Adrienne Sizer Johnson reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Jackson, MS 39216
- Reassigned Medicare billing, Mississippi enrollment
- Also billed through NPI 1831520691 (Mississippi)
- 1,932 clinicians in this Medicare group
Jackson, MS 39202
- Reassigned Medicare billing, Mississippi enrollment
- Medicare enrollment name: Medical Foundation Of Central Mississippi Inc
- 423 clinicians in this Medicare group
Jackson, MS 39216
- Reassigned Medicare billing, Mississippi enrollment
- 86 clinicians in this Medicare group
Jackson, MS 39202
- Reassigned Medicare billing, Mississippi enrollment
- 92 clinicians in this Medicare group
Jackson, MS 39201
- Reassigned Medicare billing, Mississippi enrollment
- 187 clinicians in this Medicare group
Flowood, MS 39232
- Reassigned Medicare billing, Mississippi enrollment
- Medicare enrollment name: Gastrointestinal Associates PA
- 109 clinicians in this Medicare group
Flowood, MS 39232
- Reassigned Medicare billing, Mississippi enrollment
- 33 clinicians in this Medicare group
Flowood, MS 39232
- Reassigned Medicare billing, Mississippi enrollment
- 28 clinicians in this Medicare group
Natchez, MS 39120
- Reassigned Medicare billing, Mississippi enrollment
- 63 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.
University Of Mississippi Med Center
Acute Care Hospitals · Jackson, MSSt Dominic-Jackson Memorial Hospital
Acute Care Hospitals · Jackson, MSPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 39216 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
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.
JACKSON, MS 39216
JACKSON, MS 39216
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 Adrienne Sizer Johnson's NPI number?
The NPI number for Adrienne Sizer Johnson is 1275754285. It was assigned to this individual provider in the NPPES registry on May 1, 2007.
Where is Adrienne Sizer Johnson located?
Adrienne Sizer Johnson practices at 2500 N State St, Jackson, MS 39216. The listed phone number is (601) 984-5900.
What is Adrienne Sizer Johnson's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Adrienne Sizer Johnson enrolled in Medicare?
Yes. Adrienne Sizer 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 organizations bill Medicare for Adrienne Sizer Johnson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Adrienne Sizer Johnson reassigns Medicare benefits to 9 organizations: State Of Mississippi - University Of Mississippi Medical Center (Jackson, MS), Baptist Jackson Heart Cardiology Clinic-Magee (Jackson, MS), Physicians Anesthesia Group, P.A. (Jackson, MS), Jackson Anesthesia Associates PA (Jackson, MS), Perioperative Services Of Mississippi, LLC (Jackson, MS) and 4 more organizations, listed in the Medicare section above. 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 Adrienne Sizer Johnson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Adrienne Sizer Johnson accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter of Alabama and Ambetter of Tennessee and 2 other insurers list Adrienne Sizer 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 Adrienne Sizer Johnson affiliated with any hospitals?
According to CMS data, Adrienne Sizer Johnson is affiliated with University Of Mississippi Med Center and St Dominic-Jackson Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Adrienne Sizer Johnson was last updated on November 21, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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. Adrienne Sizer Johnson, CRNA, DNP · NPI 1275754285
Nurse Anesthetist, Certified Registered physician in Jackson, Mississippi. Individual provider, active in the CMS NPPES registry since May 1, 2007.
## Identity
- **NPI:** 1275754285 (Entity type: Individual)
- **Enumerated:** May 1, 2007
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** R866793 (Mississippi)
- **Sole proprietor:** No
## Practice location
- **Address:** 2500 N STATE ST, Jackson, MS 39216-4500
- **Phone:** (601) 984-5900 · **Fax:** (601) 933-9525
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging
- **Bills Medicare through:** 9 organizations under Medicare reassignment (form CMS-855R): State Of Mississippi - University Of Mississippi Medical Center (NPI 1154317527, Jackson, MS); Baptist Jackson Heart Cardiology Clinic-Magee (NPI 1902178346, Jackson, MS); Physicians Anesthesia Group, P.A. (NPI 1407890783, Jackson, MS); Jackson Anesthesia Associates PA (NPI 1780737577, Jackson, MS); Perioperative Services Of Mississippi, LLC (NPI 1881123123, Jackson, MS); and 4 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2006
## Record status
- **NPPES last updated:** November 21, 2013
- **Other identifiers:** Medicaid 00323707 (MS); Medicare PIN 302I438753 (MS); Other P00982101 (MS); and 2 more
---
Source: [NPI Profile](https://npiprofile.com/npi/1275754285) · Data from the CMS NPPES public registry.