JOSEPH YUSAF MARDANZAI MD
NPI 1043220031
Internal Medicine in San Ramon, CA
About Joseph Yusaf Mardanzai Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOSEPH YUSAF MARDANZAI MD (NPI 1043220031) is an individual internal medicine provider in San Ramon, California, licensed in California (A80856) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of Other (2000).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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
Joseph Yusaf Mardanzai 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
3Medicare enrollment records show Joseph Mardanzai reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Ramon, CA 94582
- Reassigned Medicare billing, California enrollment
Antioch, CA 94509
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Galen Inpatient Physicians PC
- 962 clinicians in this Medicare group
Colton, CA 92324
- Reassigned Medicare billing, California enrollment
- 338 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
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 94582 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 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN RAMON, CA 94582
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 Joseph Mardanzai's NPI number?
The NPI number for Joseph Mardanzai is 1043220031. It was assigned to this individual provider in the NPPES registry on August 9, 2006.
Where is Joseph Mardanzai located?
Joseph Mardanzai practices at 11030 Bollinger Canyon Rd Ste 240, San Ramon, CA 94582. The listed phone number is (925) 736-1000.
What is Joseph Mardanzai's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Joseph Mardanzai enrolled in Medicare?
Yes. Joseph Mardanzai 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 Joseph Mardanzai's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joseph Mardanzai reassigns Medicare benefits to 3 organizations: Prestige Med Inc (San Ramon, CA), Galen Inpatient Physician Inc. (Antioch, CA) and Quantum Healthcare Medical Associates Inc. (Colton, CA). 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 Joseph Mardanzai'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 Joseph Mardanzai was last updated on September 30, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Joseph Yusaf Mardanzai, MD · NPI 1043220031
Internal Medicine physician in San Ramon, California. Individual provider, active in the CMS NPPES registry since August 9, 2006.
## Identity
- **NPI:** 1043220031 (Entity type: Individual)
- **Enumerated:** August 9, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A80856 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 11030 BOLLINGER CANYON RD, STE 240, San Ramon, CA 94582-4874
- **Phone:** (925) 736-1000
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Prestige Med Inc (NPI 1447510789, San Ramon, CA); Galen Inpatient Physician Inc. (NPI 1083658223, Antioch, CA); Quantum Healthcare Medical Associates Inc. (NPI 1568490597, Colton, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2000
## Record status
- **NPPES last updated:** September 30, 2015
- **Other identifiers:** Medicare PIN AQ379V (HI); Medicaid 00A808560 (CA); Medicare PIN 00A808561 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1043220031) · Data from the CMS NPPES public registry.