ARA S. KLIJIAN M.D.
NPI 1831134162
Thoracic Surgery (Cardiothoracic Vascular Surgery) in San Diego, CA
About Ara S. Klijian M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ARA S. KLIJIAN M.D. (NPI 1831134162) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in San Diego, California, licensed in California (A54227) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of Albany Medical College Of Union University (1990).
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
Ara S. Klijian 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 Ara Klijian reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Diego, CA 92123
- Reassigned Medicare billing, California enrollment
- 1,437 clinicians in this Medicare group
San Diego, CA 92103
- Reassigned Medicare billing, California enrollment
- 218 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 5
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 92123 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 15
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN DIEGO, CA 92123
SAN DIEGO, CA 92123
SAN DIEGO, CA 92123
SAN DIEGO, CA 92123
SAN DIEGO, CA 92123
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 Ara Klijian's NPI number?
The NPI number for Ara Klijian is 1831134162. It was assigned to this individual provider in the NPPES registry on June 19, 2006.
Where is Ara Klijian located?
Ara Klijian practices at 3131 Berger Ave Suite# 250, San Diego, CA 92123. The listed phone number is (858) 715-0303.
What is Ara Klijian's specialty?
The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.
Is Ara Klijian enrolled in Medicare?
Yes. Ara Klijian 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 Ara Klijian's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ara Klijian reassigns Medicare benefits to 2 organizations: Emergency And Acute Care Medical Corporation (San Diego, CA) and On Call Specialists Medical Group Of San Diego, Inc. (San Diego, 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 Ara Klijian'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 Ara Klijian was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Ara S. Klijian, M.D. · NPI 1831134162
Thoracic Surgery (Cardiothoracic Vascular Surgery) physician in San Diego, California. Individual provider, active in the CMS NPPES registry since June 19, 2006.
## Identity
- **NPI:** 1831134162 (Entity type: Individual)
- **Enumerated:** June 19, 2006
- **Primary specialty:** Thoracic Surgery (Cardiothoracic Vascular Surgery) · taxonomy 208G00000X
- **State license:** A54227 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3131 BERGER AVE, SUITE# 250, San Diego, CA 92123-4233
- **Phone:** (858) 715-0303 · **Fax:** (858) 492-1377
## 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): Emergency And Acute Care Medical Corporation (NPI 1437103942, San Diego, CA); On Call Specialists Medical Group Of San Diego, Inc. (NPI 1962175836, San Diego, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Albany Medical College Of Union University, class of 1990
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Medicaid 00A542270 (CA); Medicare UPIN G75810 (CA); Medicare ID-Type Unspecified A54227 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1831134162) · Data from the CMS NPPES public registry.