DR. ASHLEY G TIAN M.D.
NPI 1114107844
Neurological Surgery in Madera, CA
About Dr. Ashley G Tian M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ASHLEY G TIAN M.D. (NPI 1114107844) is an individual neurological surgery provider in Madera, California, licensed in California (A100807) and active in the NPI registry since November 2007. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Names 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)
Dr. Ashley G Tian M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Ashley Tian reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Glendale, AZ 85306
- Reassigned Medicare billing, Arizona enrollment
- 188 clinicians in this Medicare group
Phoenix, AZ 85012
- Reassigned Medicare billing, Arizona enrollment
- 1,514 clinicians in this Medicare group
Phoenix, AZ 85008
- Reassigned Medicare billing, Arizona enrollment
- 1,490 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 93636 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.
MADERA, CA 93636
MADERA, CA 93636
MADERA, CA 93636
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 Ashley Tian's NPI number?
The NPI number for Ashley Tian is 1114107844. It was assigned to this individual provider in the NPPES registry on November 9, 2007. The provider is also known as Ashley Grosvenor MD.
Where is Ashley Tian located?
Ashley Tian practices at 9300 Valley Childrens Pl, Madera, CA 93636. The listed phone number is (559) 353-5700.
What is Ashley Tian's specialty?
The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.
Is Ashley Tian enrolled in Medicare?
Yes. Ashley Tian is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Ashley Tian's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ashley Tian reassigns Medicare benefits to 3 organizations: Banner Physician Super Specialists Arizona LLC (Glendale, AZ), Banner-University Medical Group (Phoenix, AZ) and District Medical Group, Inc (Phoenix, AZ). 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 Ashley Tian's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ashley Tian accept?
Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Blue Cross Blue Shield of Arizona, Imperial Insurance Companies, Inc. and Oscar Health Plan, Inc. and 1 other insurer list Ashley Tian 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 Ashley Tian was last updated on July 28, 2014. 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.