ANDREW R. BROWN MD
NPI 1265506570
Pediatrics in Hayward, CA
About Andrew R. Brown Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANDREW R. BROWN MD (NPI 1265506570) is an individual pediatrics provider in Hayward, California, licensed in California (A39075) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Andrew R. Brown Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Andrew Brown reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Redwood City, CA 94063
- Reassigned Medicare billing, California enrollment
- 20,078 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 94545 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.
HAYWARD, CA 94545
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 Brown's NPI number?
The NPI number for Andrew Brown is 1265506570. It was assigned to this individual provider in the NPPES registry on November 20, 2006.
Where is Andrew Brown located?
Andrew Brown practices at 27400 Hesperian Blvd, Hayward, CA 94545. The listed phone number is (510) 784-4000.
What is Andrew Brown's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Andrew Brown enrolled in Medicare?
Yes. Andrew Brown is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Andrew Brown's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Brown reassigns Medicare benefits to Permanente Medical Group Inc (Redwood City, 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 Andrew Brown'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 Andrew Brown was last updated on January 25, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Andrew R. Brown, MD · NPI 1265506570
Pediatrics physician in Hayward, California. Individual provider, active in the CMS NPPES registry since November 20, 2006.
## Identity
- **NPI:** 1265506570 (Entity type: Individual)
- **Enumerated:** November 20, 2006
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** A39075 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 27400 HESPERIAN BLVD, Hayward, CA 94545-4235
- **Phone:** (510) 784-4000
## 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:** Permanente Medical Group Inc (NPI 1639252604, Redwood City, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** January 25, 2022
- **Other identifiers:** Medicaid 00A390750 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1265506570) · Data from the CMS NPPES public registry.