HAMZA ABBASI
NPI 1821545484
Internal Medicine in Palo Alto, CA
About Hamza Abbasi NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HAMZA ABBASI (NPI 1821545484) is an individual internal medicine provider in Palo Alto, California, licensed in California (A177853) and active in the NPI registry since September 2016. He is enrolled in Medicare PECOS, maintains a secondary practice location in Chicago, and is a graduate of Other (2020).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Hamza Abbasi 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 Hamza Abbasi 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.
Areas of Expertise CMS Part B claims 4
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94301 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.
PALO ALTO, CA 94301
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 Hamza Abbasi's NPI number?
The NPI number for Hamza Abbasi is 1821545484. It was assigned to this individual provider in the NPPES registry on September 1, 2016.
Where is Hamza Abbasi located?
Hamza Abbasi practices at 795 El Camino Real, Palo Alto, CA 94301. The listed phone number is (650) 321-4121.
What is Hamza Abbasi's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Hamza Abbasi enrolled in Medicare?
Yes. Hamza Abbasi 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 Hamza Abbasi's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Hamza Abbasi 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 Hamza Abbasi'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 Hamza Abbasi was last updated on July 11, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Hamza Abbasi · NPI 1821545484
Internal Medicine physician in Palo Alto, California. Individual provider, active in the CMS NPPES registry since September 1, 2016.
## Identity
- **NPI:** 1821545484 (Entity type: Individual)
- **Enumerated:** September 1, 2016
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A177853 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 795 EL CAMINO REAL, Palo Alto, CA 94301-2302
- **Phone:** (650) 321-4121
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **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:** Other, class of 2020
## Record status
- **NPPES last updated:** July 11, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1821545484) · Data from the CMS NPPES public registry.