DR. ABRAHAM HERSHEL GROSSWASSER D.C.
NPI 1326487844
Chiropractor in Los Angeles, CA
About Dr. Abraham Hershel Grosswasser D.c. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ABRAHAM HERSHEL GROSSWASSER D.C. (NPI 1326487844) is an individual chiropractor in Los Angeles, California, licensed in California (31573) and active in the NPI registry since June 2013. He is a graduate of Logan College Of Chiropractic (2000).
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. Abraham Hershel Grosswasser D.c. 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 Abraham Grosswasser reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Studio City, CA 91604
- Reassigned Medicare billing, California enrollment
- 4 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 2
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.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LOS ANGELES, CA 90025
LOS ANGELES, CA 90025
LOS ANGELES, CA 90025
WEST LOS ANGELES, CA 90025
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 Abraham Grosswasser's NPI number?
The NPI number for Abraham Grosswasser is 1326487844. It was assigned to this individual provider in the NPPES registry on June 18, 2013.
Where is Abraham Grosswasser located?
Abraham Grosswasser practices at 2001 S Barrington Ave Suite 101, Los Angeles, CA 90025. The listed phone number is (310) 575-5575.
What is Abraham Grosswasser's specialty?
The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.
Is Abraham Grosswasser enrolled in Medicare?
Yes. Abraham Grosswasser 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 Abraham Grosswasser's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Abraham Grosswasser reassigns Medicare benefits to Boulevard Medical Group, Inc. (Studio City, 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 Abraham Grosswasser'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 Abraham Grosswasser was last updated on June 18, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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. Abraham Hershel Grosswasser, D.C. · NPI 1326487844
Chiropractor provider in Los Angeles, California. Individual provider, active in the CMS NPPES registry since June 18, 2013.
## Identity
- **NPI:** 1326487844 (Entity type: Individual)
- **Enumerated:** June 18, 2013
- **Primary specialty:** Chiropractor · taxonomy 111N00000X
- **State license:** 31573 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2001 S BARRINGTON AVE, SUITE 101, Los Angeles, CA 90025-5363
- **Phone:** (310) 575-5575
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** Boulevard Medical Group, Inc. (NPI 1437551033, Studio City, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Logan College Of Chiropractic, class of 2000
## Record status
- **NPPES last updated:** June 18, 2013
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Source: [NPI Profile](https://npiprofile.com/npi/1326487844) · Data from the CMS NPPES public registry.