IRVIN V MA MD
NPI 1487233201
Internal Medicine in Santa Clara, CA
About Irvin V Ma Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
IRVIN V MA MD (NPI 1487233201) is an individual internal medicine provider in Santa Clara, California, licensed in California (A196566) and active in the NPI registry since April 2021. He is enrolled in Medicare PECOS and is a graduate of University Of Nevada School Of Medicine (2021).
NPPES Registry Identity
Specialties & Licenses
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
Irvin V Ma 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 Reassignment
Medicare enrollment records show Irvin Ma reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Palo Alto, CA 94301
- Reassigned Medicare billing, California enrollment
- 4,479 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 95054 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.
SANTA CLARA, CA 95054
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 Irvin Ma's NPI number?
The NPI number for Irvin Ma is 1487233201. It was assigned to this individual provider in the NPPES registry on April 7, 2021.
Where is Irvin Ma located?
Irvin Ma practices at 2441 Mission College Blvd, Santa Clara, CA 95054. The listed phone number is (408) 702-6668.
What is Irvin Ma's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Irvin Ma enrolled in Medicare?
Yes. Irvin Ma 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 organization bills Medicare for Irvin Ma's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Irvin Ma reassigns Medicare benefits to Sutter Bay Medical Foundation (Palo Alto, CA). 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 Irvin Ma'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 Irvin Ma was last updated on October 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Irvin V Ma, MD · NPI 1487233201
Internal Medicine physician in Santa Clara, California. Individual provider, active in the CMS NPPES registry since April 7, 2021.
## Identity
- **NPI:** 1487233201 (Entity type: Individual)
- **Enumerated:** April 7, 2021
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A196566 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2441 MISSION COLLEGE BLVD, Santa Clara, CA 95054-1214
- **Phone:** (408) 702-6668
## 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:** Sutter Bay Medical Foundation (NPI 1013950807, Palo Alto, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Nevada School Of Medicine, class of 2021
## Record status
- **NPPES last updated:** October 22, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1487233201) · Data from the CMS NPPES public registry.