DR. KARL RICHARD HARER D.C.
NPI 1659360865
Chiropractor in Ventura, CA
About Dr. Karl Richard Harer D.c. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. KARL RICHARD HARER D.C. (NPI 1659360865) is an individual chiropractor in Ventura, California, licensed in California (DC17899) and active in the NPI registry since October 2005.
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 (PECOS)
Dr. Karl Richard Harer D.c. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Karl Harer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Ventura, CA 93003
- Reassigned Medicare billing, California enrollment
- 2 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.
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.
VENTURA, CA 93003
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 Karl Harer's NPI number?
The NPI number for Karl Harer is 1659360865. It was assigned to this individual provider in the NPPES registry on October 19, 2005.
Where is Karl Harer located?
Karl Harer practices at 4517 Market St Suite 1, Ventura, CA 93003. The listed phone number is (805) 650-5929.
What is Karl Harer's specialty?
The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.
Is Karl Harer enrolled in Medicare?
Yes. Karl Harer is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Karl Harer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karl Harer reassigns Medicare benefits to Eric G Mortensen Chiropractic Inc (Ventura, CA). The 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 Karl Harer'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 Karl Harer was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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. Karl Richard Harer, D.C. · NPI 1659360865
Chiropractor provider in Ventura, California. Individual provider, active in the CMS NPPES registry since October 19, 2005.
## Identity
- **NPI:** 1659360865 (Entity type: Individual)
- **Enumerated:** October 19, 2005
- **Primary specialty:** Chiropractor · taxonomy 111N00000X
- **State license:** DC17899 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4517 MARKET ST, SUITE 1, Ventura, CA 93003-7710
- **Phone:** (805) 650-5929 · **Fax:** (805) 650-5947
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Bills Medicare through:** Eric G Mortensen Chiropractic Inc (NPI 1518407592, Ventura, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1659360865) · Data from the CMS NPPES public registry.