DR. ANDREW KEYSER M.D.
NPI 1225442023
Emergency Medicine in Austin, TX
About Dr. Andrew Keyser M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ANDREW KEYSER M.D. (NPI 1225442023) is an individual emergency medicine provider in Austin, Texas, licensed in Arizona (R74614) and active in the NPI registry since June 2014. He is enrolled in Medicare PECOS, maintains 9 additional practice locations, and is a graduate of Other (2014).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 9
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. Andrew Keyser M.d. 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 Andrew Keyser reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Austin, TX 78759
- Reassigned Medicare billing, Texas, Colorado and Massachusetts enrollments
- Also billed through NPI 1730781691 (Colorado), NPI 1881261303 (Massachusetts)
- 50 clinicians in this Medicare group
Kansas City, MO 64114
- Reassigned Medicare billing, Kansas and Missouri enrollments
- 40 clinicians in this Medicare group
Oro Valley, AZ 85755
- Reassigned Medicare billing, Arizona enrollment
- 99 clinicians in this Medicare group
Indianapolis, IN 46220
- Reassigned Medicare billing, Illinois, Indiana, Massachusetts, Michigan and North Carolina enrollments
- Medicare enrollment name: Cityblock Medical Practice PA
- 48 clinicians in this Medicare group
Columbus, OH 43213
- Reassigned Medicare billing, Ohio enrollment
- 62 clinicians in this Medicare group
Hialeah, FL 33012
- Reassigned Medicare billing, Florida enrollment
- 11 clinicians in this Medicare group
Oakland, CA 94609
- Reassigned Medicare billing, California enrollment
- 62 clinicians in this Medicare group
Ocean, NJ 07712
- Reassigned Medicare billing, New Jersey enrollment
- 130 clinicians in this Medicare group
Brooklyn, NY 11225
- Reassigned Medicare billing, New York enrollment
- 20 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 78731 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Andrew Keyser's NPI number?
The NPI number for Andrew Keyser is 1225442023. It was assigned to this individual provider in the NPPES registry on June 19, 2014.
Where is Andrew Keyser located?
Andrew Keyser practices at 5900 Balcones Dr # 8454, Austin, TX 78731. The listed phone number is (970) 980-8933.
What is Andrew Keyser's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Andrew Keyser enrolled in Medicare?
Yes. Andrew Keyser 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 Andrew Keyser's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Keyser reassigns Medicare benefits to 9 organizations: Carbon Health Medical Group Of Florida PA (Austin, TX), Carbon Health Medical Group Of Kansas PA (Kansas City, MO), Southern Arizona Urgent Care, LLC (Oro Valley, AZ), Cityblock Medical Practice, P.A. (Indianapolis, IN), Cityblock Medical Practice, LLC (Columbus, OH) 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 Andrew Keyser'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 Andrew Keyser was last updated on September 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 29 days 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. Andrew Keyser, M.D. · NPI 1225442023
Emergency Medicine physician in Austin, Texas. Individual provider, active in the CMS NPPES registry since June 19, 2014.
## Identity
- **NPI:** 1225442023 (Entity type: Individual)
- **Enumerated:** June 19, 2014
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** R74614 (Arizona)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 5900 BALCONES DR # 8454, Austin, TX 78731-4257
- **Phone:** (970) 980-8933 · **Fax:** (800) 524-3139
## 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:** 9 organizations under Medicare reassignment (form CMS-855R): Carbon Health Medical Group Of Florida PA (NPI 1477155331, Austin, TX); Carbon Health Medical Group Of Kansas PA (NPI 1497357396, Kansas City, MO); Southern Arizona Urgent Care, LLC (NPI 1689039398, Oro Valley, AZ); Cityblock Medical Practice, P.A. (NPI 1588296784, Indianapolis, IN); Cityblock Medical Practice, LLC (NPI 1013673821, Columbus, OH); and 4 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** September 24, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1225442023) · Data from the CMS NPPES public registry.