RUBY MAINI MD
NPI 1063906063
Internal Medicine - Medical Oncology in Pleasanton, CA
About Ruby Maini Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RUBY MAINI MD (NPI 1063906063) is an individual medical oncology provider in Pleasanton, California, licensed in California (A194651) and active in the NPI registry since June 2018. She is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Locations 3
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
Ruby Maini 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
4Medicare enrollment records show Ruby Maini reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Pleasanton, CA 94588
- Reassigned Medicare billing, California enrollment
- 4,258 clinicians in this Medicare group
Hayward, CA 94545
- Reassigned Medicare billing, California enrollment
- 900 clinicians in this Medicare group
Newark, CA 94560
- Reassigned Medicare billing, California enrollment
- 435 clinicians in this Medicare group
West Monroe, LA 71292
- Reassigned Medicare billing, Louisiana enrollment
- 4,559 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 94588 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 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PLEASANTON, CA 94588
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 Ruby Maini's NPI number?
The NPI number for Ruby Maini is 1063906063. It was assigned to this individual provider in the NPPES registry on June 21, 2018.
Where is Ruby Maini located?
Ruby Maini practices at 5725 W Las Positas Blvd Ste 100, Pleasanton, CA 94588. The listed phone number is (925) 734-8130.
What is Ruby Maini's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.
Is Ruby Maini enrolled in Medicare?
Yes. Ruby Maini 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 Ruby Maini's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ruby Maini reassigns Medicare benefits to 4 organizations: Stanford Health Care (Pleasanton, CA), Alameda Health System (Hayward, CA), University Healthcare Alliance (Newark, CA) and Ochsner Clinic LLC (West Monroe, LA). 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 Ruby Maini's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ruby Maini accept?
Health plans from CHRISTUS Health Plan list Ruby Maini 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 Ruby Maini was last updated on June 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Ruby Maini, MD · NPI 1063906063
Medical Oncology physician in Pleasanton, California. Individual provider, active in the CMS NPPES registry since June 21, 2018.
## Identity
- **NPI:** 1063906063 (Entity type: Individual)
- **Enumerated:** June 21, 2018
- **Primary specialty:** Internal Medicine - Medical Oncology · taxonomy 207RX0202X
- **State license:** A194651 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 5725 W LAS POSITAS BLVD STE 100, Pleasanton, CA 94588-4007
- **Phone:** (925) 734-8130
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Stanford Health Care (NPI 1124561758, Pleasanton, CA); Alameda Health System (NPI 1023219821, Hayward, CA); University Healthcare Alliance (NPI 1760531198, Newark, CA); Ochsner Clinic LLC (NPI 1932598695, West Monroe, LA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** June 11, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1063906063) · Data from the CMS NPPES public registry.