DR. MEHDI MANZARI M.D.
NPI 1689807463
Internal Medicine in Thousand Oaks, CA
About Dr. Mehdi Manzari M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MEHDI MANZARI M.D. (NPI 1689807463) is an individual internal medicine provider in Thousand Oaks, California, licensed in California (A109271) and active in the NPI registry since August 2009. He is enrolled in Medicare PECOS and is a graduate of Other (2002).
NPPES Registry Identity
Specialties & Licenses
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. Mehdi Manzari 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
7Medicare enrollment records show Mehdi Manzari reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Camarillo, CA 93012
- Reassigned Medicare billing, California enrollment
- 1,191 clinicians in this Medicare group
Simi Valley, CA 93065
- Reassigned Medicare billing, California enrollment
- 21 clinicians in this Medicare group
Oxnard, CA 93036
- Reassigned Medicare billing, California enrollment
- 13,921 clinicians in this Medicare group
Corona, CA 92879
- Reassigned Medicare billing, California enrollment
- 123 clinicians in this Medicare group
Riverside, CA 92501
- Reassigned Medicare billing, California enrollment
- 48 clinicians in this Medicare group
San Bernardino, CA 92404
- Reassigned Medicare billing, California enrollment
- 1,216 clinicians in this Medicare group
Apple Valley, CA 92307
- Reassigned Medicare billing, California enrollment
- 914 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 91360 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 Mehdi Manzari's NPI number?
The NPI number for Mehdi Manzari is 1689807463. It was assigned to this individual provider in the NPPES registry on August 27, 2009.
Where is Mehdi Manzari located?
Mehdi Manzari practices at 227 W Janss Rd Ste 210, Thousand Oaks, CA 91360. The listed phone number is (424) 333-1236.
What is Mehdi Manzari's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Mehdi Manzari enrolled in Medicare?
Yes. Mehdi Manzari 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 Mehdi Manzari's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mehdi Manzari reassigns Medicare benefits to 7 organizations: Dignity Health Medical Foundation (Camarillo, CA), Allure Medical Group A Professional Corporation (Simi Valley, CA), Southern California Permanente Medical Group (Oxnard, CA), Hospitalist Group Of Montebello Inc (Corona, CA), Alertive Healthcare Medical Group Apc (Riverside, CA) and 2 more organizations, listed in the Medicare section above. 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 Mehdi Manzari'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 Mehdi Manzari was last updated on November 29, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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. Mehdi Manzari, M.D. · NPI 1689807463
Internal Medicine physician in Thousand Oaks, California. Individual provider, active in the CMS NPPES registry since August 27, 2009.
## Identity
- **NPI:** 1689807463 (Entity type: Individual)
- **Enumerated:** August 27, 2009
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A109271 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 227 W JANSS RD STE 210, Thousand Oaks, CA 91360-1867
- **Phone:** (424) 333-1236 · **Fax:** (424) 372-7181
## 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:** 7 organizations under Medicare reassignment (form CMS-855R): Dignity Health Medical Foundation (NPI 1386937977, Camarillo, CA); Allure Medical Group A Professional Corporation (NPI 1154865640, Simi Valley, CA); Southern California Permanente Medical Group (NPI 1275756652, Oxnard, CA); Hospitalist Group Of Montebello Inc (NPI 1578959318, Corona, CA); Alertive Healthcare Medical Group Apc (NPI 1467024331, Riverside, CA); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2002
## Record status
- **NPPES last updated:** November 29, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1689807463) · Data from the CMS NPPES public registry.