ANN KATHERINE JOHN MD
NPI 1154532307
Anesthesiology in Austin, TX
About Ann Katherine John Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANN KATHERINE JOHN MD (NPI 1154532307) is an individual anesthesiology provider in Austin, Texas, licensed in Texas (M9382) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS, is affiliated with Christus Santa Rosa Hospital-san Marcos, and is a graduate of University Of Texas Medical Branch At Galveston (2004).
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
Ann Katherine John Md 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
6Medicare enrollment records show Ann John reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Austin, TX 78759
- Reassigned Medicare billing, Texas enrollment
- 840 clinicians in this Medicare group
Austin, TX 78745
- Reassigned Medicare billing, Texas enrollment
- 175 clinicians in this Medicare group
Fort Worth, TX 76104
- Reassigned Medicare billing, Texas enrollment
- 509 clinicians in this Medicare group
Dallas, TX 75219
- Reassigned Medicare billing, Texas enrollment
- 495 clinicians in this Medicare group
Pensacola, FL 32502
- Reassigned Medicare billing, Texas enrollment
- 432 clinicians in this Medicare group
Bradenton, FL 34208
- Reassigned Medicare billing, Texas enrollment
- 195 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 7
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.
Christus Santa Rosa Hospital-San Marcos
Acute Care Hospitals · San Marcos, TXSt David's Medical Center
Acute Care Hospitals · Austin, TXOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
AUSTIN, TX 78759
AUSTIN, TX 78759
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 Ann John's NPI number?
The NPI number for Ann John is 1154532307. It was assigned to this individual provider in the NPPES registry on May 26, 2007.
Where is Ann John located?
Ann John practices at 8140 N Mopac Expy Ste 3-210, Austin, TX 78759. The listed phone number is (512) 343-2292.
What is Ann John's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Ann John enrolled in Medicare?
Yes. Ann John 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 Ann John's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ann John reassigns Medicare benefits to 6 organizations: Austin Anesthesiology Group, PLLC (Austin, TX), Austin Gastroenterology Anesthesia Associates PLLC (Austin, TX), Sound Physicians Anesthesiology Of Texas PLLC (Fort Worth, TX), Independent Physicians Network PLLC (Dallas, TX), Texas Ams PLLC (Pensacola, FL) and 1 more organization, 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 Ann John's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ann John accept?
Health plans from Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Texas, Molina Healthcare, Sendero Health Plans, Local Nonprofit and UnitedHealthcare list Ann John 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 Ann John affiliated with any hospitals?
According to CMS data, Ann John is affiliated with Christus Santa Rosa Hospital-San Marcos and St David's Medical Center.
When was this NPI record last updated?
The NPPES record for Ann John was last updated on March 4, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Ann Katherine John, MD · NPI 1154532307
Anesthesiology physician in Austin, Texas. Individual provider, active in the CMS NPPES registry since May 26, 2007.
## Identity
- **NPI:** 1154532307 (Entity type: Individual)
- **Enumerated:** May 26, 2007
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** M9382 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 8140 N MOPAC EXPY STE 3-210, Austin, TX 78759-8862
- **Phone:** (512) 343-2292 · **Fax:** (512) 343-2745
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Austin Anesthesiology Group, PLLC (NPI 1598724304, Austin, TX); Austin Gastroenterology Anesthesia Associates PLLC (NPI 1427405810, Austin, TX); Sound Physicians Anesthesiology Of Texas PLLC (NPI 1295356277, Fort Worth, TX); Independent Physicians Network PLLC (NPI 1396274676, Dallas, TX); Texas Ams PLLC (NPI 1174926125, Pensacola, FL); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Texas Medical Branch At Galveston, class of 2004
## Record status
- **NPPES last updated:** March 4, 2024
- **Other identifiers:** Medicaid 2024317-02 (TX); Other 8CE497 (UT)
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Source: [NPI Profile](https://npiprofile.com/npi/1154532307) · Data from the CMS NPPES public registry.