OLIVER OPPERS AALAMI M.D.
NPI 1225229024
Surgery - Vascular Surgery in Stanford, CA
About Oliver Oppers Aalami M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
OLIVER OPPERS AALAMI M.D. (NPI 1225229024) is an individual vascular surgery provider in Stanford, California, licensed in California (A71647) and active in the NPI registry since August 2007. He is enrolled in Medicare PECOS and is a graduate of Boston University School Of Medicine (1998).
NPPES Registry Identity
Specialties & Licenses 2
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
Oliver Oppers Aalami M.d. 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
2Medicare enrollment records show Oliver Aalami reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Palo Alto, CA 94301
- Reassigned Medicare billing, California enrollment
- 4,479 clinicians in this Medicare group
Menlo Park, CA 94025
- Reassigned Medicare billing, California enrollment
- 597 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 94305 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.
STANFORD, CA 94305
STANFORD, CA 94305
STANFORD, CA 94305
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 Oliver Aalami's NPI number?
The NPI number for Oliver Aalami is 1225229024. It was assigned to this individual provider in the NPPES registry on August 6, 2007.
Where is Oliver Aalami located?
Oliver Aalami practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.
What is Oliver Aalami's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Vascular Surgery, with taxonomy code 2086S0129X.
Is Oliver Aalami enrolled in Medicare?
Yes. Oliver Aalami 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 Oliver Aalami's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Oliver Aalami reassigns Medicare benefits to 2 organizations: Sutter Bay Medical Foundation (Palo Alto, CA) and County Of San Mateo (Menlo Park, 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 Oliver Aalami'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 Oliver Aalami was last updated on April 28, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Oliver Oppers Aalami, M.D. · NPI 1225229024
Vascular Surgery physician in Stanford, California. Individual provider, active in the CMS NPPES registry since August 6, 2007.
## Identity
- **NPI:** 1225229024 (Entity type: Individual)
- **Enumerated:** August 6, 2007
- **Primary specialty:** Surgery - Vascular Surgery · taxonomy 2086S0129X
- **State license:** A71647 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 PASTEUR DR, Stanford, CA 94305-2200
- **Phone:** (650) 723-4000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Sutter Bay Medical Foundation (NPI 1013950807, Palo Alto, CA); County Of San Mateo (NPI 1336239052, Menlo Park, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Boston University School Of Medicine, class of 1998
## Record status
- **NPPES last updated:** April 28, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1225229024) · Data from the CMS NPPES public registry.