JIM S. LENIHAN
NPI 1851319123
Chiropractor in San Anselmo, CA
About Jim S. Lenihan NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JIM S. LENIHAN (NPI 1851319123) is an individual chiropractor in San Anselmo, California, licensed in California (26217) and active in the NPI registry since July 2006. He is a graduate of Other (1999).
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
Jim S. Lenihan 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 Reassignment
Medicare enrollment records show Jim Lenihan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Anselmo, CA 94960
- Reassigned Medicare billing, California enrollment
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 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Jim Lenihan's NPI number?
The NPI number for Jim Lenihan is 1851319123. It was assigned to this individual provider in the NPPES registry on July 17, 2006.
Where is Jim Lenihan located?
Jim Lenihan practices at 412 Red Hill Ave Ste 11, San Anselmo, CA 94960. The listed phone number is (415) 482-8282.
What is Jim Lenihan's specialty?
The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.
Is Jim Lenihan enrolled in Medicare?
Yes. Jim Lenihan 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 organization bills Medicare for Jim Lenihan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jim Lenihan reassigns Medicare benefits to Lenihan Family Chiropractic Inc. (San Anselmo, 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 Jim Lenihan'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 Jim Lenihan 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.
# Jim S. Lenihan · NPI 1851319123
Chiropractor provider in San Anselmo, California. Individual provider, active in the CMS NPPES registry since July 17, 2006.
## Identity
- **NPI:** 1851319123 (Entity type: Individual)
- **Enumerated:** July 17, 2006
- **Primary specialty:** Chiropractor · taxonomy 111N00000X
- **State license:** 26217 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 412 RED HILL AVE STE 11, San Anselmo, CA 94960-2469
- **Phone:** (415) 482-8282
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** Lenihan Family Chiropractic Inc. (NPI 1306310792, San Anselmo, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1999
## Record status
- **NPPES last updated:** July 8, 2007
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Source: [NPI Profile](https://npiprofile.com/npi/1851319123) · Data from the CMS NPPES public registry.