DR. WESAM G HOUSHAN MD
NPI 1356467112
Internal Medicine in Santa Ana, CA
About Dr. Wesam G Houshan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WESAM G HOUSHAN MD (NPI 1356467112) is an individual internal medicine provider in Santa Ana, California, licensed in Nevada (13160) and active in the NPI registry since March 2007. She is enrolled in Medicare PECOS, maintains a secondary practice location in Las Vegas, and is a graduate of Other (2001).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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 and accepts Medicare assignment
Dr. Wesam G Houshan 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 Wesam Houshan reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Costa Mesa, CA 92626
- Reassigned Medicare billing, California enrollment
- 103 clinicians in this Medicare group
Costa Mesa, CA 92626
- Reassigned Medicare billing, California enrollment
- 194 clinicians in this Medicare group
Costa Mesa, CA 92626
- Reassigned Medicare billing, California enrollment
- 36 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 92704 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 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SANTA ANA, CA 92704
SANTA ANA, CA 92704
SANTA ANA, CA 92704
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 Wesam Houshan's NPI number?
The NPI number for Wesam Houshan is 1356467112. It was assigned to this individual provider in the NPPES registry on March 22, 2007.
Where is Wesam Houshan located?
Wesam Houshan practices at 3401 W Sunflower Ave Ste 250, Santa Ana, CA 92704. The listed phone number is (714) 992-1182.
What is Wesam Houshan's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Wesam Houshan enrolled in Medicare?
Yes. Wesam Houshan 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 Wesam Houshan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Wesam Houshan reassigns Medicare benefits to 3 organizations: Gn Medical Associates, Inc. (Costa Mesa, CA), Careconnectmd Ca PC (Costa Mesa, CA) and Care Partners California Medical PC (Costa Mesa, 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 Wesam Houshan'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 Wesam Houshan was last updated on March 7, 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.
# Dr. Wesam G Houshan, MD · NPI 1356467112
Internal Medicine physician in Santa Ana, California. Individual provider, active in the CMS NPPES registry since March 22, 2007.
## Identity
- **NPI:** 1356467112 (Entity type: Individual)
- **Enumerated:** March 22, 2007
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 13160 (Nevada)
- **Sole proprietor:** No
## Practice location
- **Address:** 3401 W SUNFLOWER AVE STE 250, Santa Ana, CA 92704
- **Phone:** (714) 992-1182 · **Fax:** (562) 803-4500
## 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): Gn Medical Associates, Inc. (NPI 1275576522, Costa Mesa, CA); Careconnectmd Ca PC (NPI 1366063125, Costa Mesa, CA); Care Partners California Medical PC (NPI 1669260493, Costa Mesa, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2001
## Record status
- **NPPES last updated:** March 7, 2023
- **Other identifiers:** Other LL1702 (NV)
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Source: [NPI Profile](https://npiprofile.com/npi/1356467112) · Data from the CMS NPPES public registry.