ALLISON MARIE AMMANN MD
NPI 1699271585
Surgery - Surgical Oncology in Houston, TX
About Allison Marie Ammann Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALLISON MARIE AMMANN MD (NPI 1699271585) is an individual surgical oncology provider in Houston, Texas, licensed in Texas (W8274) and active in the NPI registry since April 2018. She is enrolled in Medicare PECOS, maintains a secondary practice location in Houston, and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Allison Marie Ammann Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Allison Ammann reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
- 2,554 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 77054 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 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Allison Ammann's NPI number?
The NPI number for Allison Ammann is 1699271585. It was assigned to this individual provider in the NPPES registry on April 1, 2018.
Where is Allison Ammann located?
Allison Ammann practices at 1919 Old Spanish Trl Fl 6, Houston, TX 77054. The listed phone number is (832) 957-6500.
What is Allison Ammann's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Surgical Oncology, with taxonomy code 2086X0206X.
Is Allison Ammann enrolled in Medicare?
Yes. Allison Ammann is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Allison Ammann's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Allison Ammann reassigns Medicare benefits to Baylor College Of Medicine (Houston, TX). 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 Allison Ammann's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Allison Ammann accept?
Health plans from Blue Cross and Blue Shield of Texas and UnitedHealthcare list Allison Ammann 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.
When was this NPI record last updated?
The NPPES record for Allison Ammann was last updated on August 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Allison Marie Ammann, MD · NPI 1699271585
Surgical Oncology physician in Houston, Texas. Individual provider, active in the CMS NPPES registry since April 1, 2018.
## Identity
- **NPI:** 1699271585 (Entity type: Individual)
- **Enumerated:** April 1, 2018
- **Primary specialty:** Surgery - Surgical Oncology · taxonomy 2086X0206X
- **State license:** W8274 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 1919 OLD SPANISH TRL FL 6, Houston, TX 77054-2003
- **Phone:** (832) 957-6500
## 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:** Baylor College Of Medicine (NPI 1881026664, Houston, TX), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** August 12, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1699271585) · Data from the CMS NPPES public registry.