DR. ANDREW RATHNASAMY XAVIER MD
NPI 1124097225
Psychiatry & Neurology - Vascular Neurology in Mountain View, CA
About Dr. Andrew Rathnasamy Xavier Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ANDREW RATHNASAMY XAVIER MD (NPI 1124097225) is an individual vascular neurology provider in Mountain View, California, licensed in California (C169966) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Ascension Providence Hospital, Southfield And Novi, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 4
Secondary Practice Locations 2
Other Identifiers 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 and accepts Medicare assignment
Dr. Andrew Rathnasamy Xavier 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
5Medicare enrollment records show Andrew Xavier reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Jose, CA 95128
- Reassigned Medicare billing, California enrollment
- 314 clinicians in this Medicare group
Kalamazoo, MI 49007
- Reassigned Medicare billing, Michigan enrollment
- 1,133 clinicians in this Medicare group
Ypsilanti, MI 48198
- Reassigned Medicare billing, Michigan enrollment
- 66 clinicians in this Medicare group
Bingham Farms, MI 48025
- Reassigned Medicare billing, Michigan enrollment
- 15 clinicians in this Medicare group
Troy, AL 36079
- Reassigned Medicare billing, Alabama enrollment
- 514 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 10
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ascension Providence Hospital, Southfield And Novi
Acute Care Hospitals · Southfield, MIBeaumont Hospital - Dearborn
Acute Care Hospitals · Dearborn, MIMclaren Flint
Acute Care Hospitals · Flint, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94040 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.
Other Providers at the Same Location NPPES 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MOUNTAIN VIEW, CA 94040
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 Xavier's NPI number?
The NPI number for Andrew Xavier is 1124097225. It was assigned to this individual provider in the NPPES registry on March 14, 2006.
Where is Andrew Xavier located?
Andrew Xavier practices at 2495 Hospital Dr Ste 450, Mountain View, CA 94040. The listed phone number is (408) 871-3400.
What is Andrew Xavier's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Vascular Neurology, with taxonomy code 2084V0102X.
Is Andrew Xavier enrolled in Medicare?
Yes. Andrew Xavier 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 Xavier's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Xavier reassigns Medicare benefits to 5 organizations: El Camino Health Medical Network, LLC (San Jose, CA), Bronson Methodist Hospital (Kalamazoo, MI), University Neurosurgical Associates, PC (Ypsilanti, MI), Neuro Team One PLLC (Bingham Farms, MI) and Houston County Healthcare Authority (Troy, AL). 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 Xavier's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Andrew Xavier accept?
Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, Priority Health and UnitedHealthcare list Andrew Xavier 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 Andrew Xavier affiliated with any hospitals?
According to CMS data, Andrew Xavier is affiliated with Ascension Providence Hospital, Southfield And Novi, Beaumont Hospital - Dearborn and Mclaren Flint.
When was this NPI record last updated?
The NPPES record for Andrew Xavier was last updated on April 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Dr. Andrew Rathnasamy Xavier, MD · NPI 1124097225
Vascular Neurology physician in Mountain View, California. Individual provider, active in the CMS NPPES registry since March 14, 2006.
## Identity
- **NPI:** 1124097225 (Entity type: Individual)
- **Enumerated:** March 14, 2006
- **Primary specialty:** Psychiatry & Neurology - Vascular Neurology · taxonomy 2084V0102X
- **State license:** C169966 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 2495 HOSPITAL DR STE 450, Mountain View, CA 94040-4171
- **Phone:** (408) 871-3400 · **Fax:** (650) 643-0026
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): El Camino Health Medical Network, LLC (NPI 1164880761, San Jose, CA); Bronson Methodist Hospital (NPI 1417961137, Kalamazoo, MI); University Neurosurgical Associates, PC (NPI 1508220864, Ypsilanti, MI); Neuro Team One PLLC (NPI 1699227116, Bingham Farms, MI); Houston County Healthcare Authority (NPI 1295065811, Troy, AL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1988
## Record status
- **NPPES last updated:** April 18, 2025
- **Other identifiers:** Other P00293074
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Source: [NPI Profile](https://npiprofile.com/npi/1124097225) · Data from the CMS NPPES public registry.