TOWER E.N.T.
NPI 1720113954
Otolaryngology in Los Angeles, CA
About Tower E.n.t. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TOWER E.N.T. (NPI 1720113954) is a healthcare organization registered as an otolaryngology in Los Angeles, California and active in the NPI registry since February 2007. The organization lists Martin L Hopp, Pres, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Tower E.n.t. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
7Medicare enrollment records show 7 clinicians reassign Medicare billing to Tower E.N.T., which bills Medicare for the services they deliver. Of these, 4 practice at this address. They are listed nearest first.
Clinicians, nearest first (7)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Martin L. Hopp, MD Phd, A Medical Corp's NPI number?
The NPI number for Martin L. Hopp, MD Phd, A Medical Corp is 1720113954. It was assigned to this organization in the NPPES registry on February 21, 2007. The provider is doing business as Tower E.N.T..
Where is Martin L. Hopp, MD Phd, A Medical Corp located?
Martin L. Hopp, MD Phd, A Medical Corp is located at 8631 W 3rd St Suite 440E, Los Angeles, CA 90048. The listed phone number is (310) 657-7704.
What is Martin L. Hopp, MD Phd, A Medical Corp's specialty?
The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.
Is Martin L. Hopp, MD Phd, A Medical Corp enrolled in Medicare?
Yes. Martin L. Hopp, MD Phd, A Medical Corp is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Martin L. Hopp, MD Phd, A Medical Corp?
According to the CMS Revalidation Reassignment List (October 2026 release), 7 clinicians, all in Otolaryngology, reassign their Medicare billing to Martin L. Hopp, MD Phd, A Medical Corp. A 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 the clinician's services. Of these, 4 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Martin L. Hopp, MD Phd, A Medical Corp was last updated on August 22, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Tower E.n.t. · NPI 1720113954
Otolaryngology organization in Los Angeles, California. Organization record, active in the CMS NPPES registry since February 21, 2007.
## Identity
- **NPI:** 1720113954 (Entity type: Organization)
- **Enumerated:** February 21, 2007
- **Primary specialty:** Otolaryngology · taxonomy 207Y00000X
- **Legal business name:** Martin L. Hopp, Md Phd, A Medical Corp
- **Organization subpart:** No
- **Authorized official:** Martin Hopp, PRES
## Practice location
- **Address:** 8631 W 3RD ST, SUITE 440E, Los Angeles, CA 90048-5901
- **Phone:** (310) 657-7704 · **Fax:** (310) 652-9906
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 7 clinicians (Otolaryngology) reassign Medicare billing to this organization (form CMS-855R); 4 practice at this address · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 22, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1720113954) · Data from the CMS NPPES public registry.