HAL M. WEITZBUCH, M.D. MEDICAL CORPORATION
NPI 1639420177
Clinic/Center - Medical Specialty in Calabasas, CA
About Hal M. Weitzbuch, M.d. Medical Corporation NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HAL M. WEITZBUCH, M.D. MEDICAL CORPORATION (NPI 1639420177), doing business as Brilliance Dermatology, is a healthcare organization registered as a medical specialty in Calabasas, California and active in the NPI registry since September 2012. The organization maintains a secondary practice location in Thousand Oaks and lists Jan West, Practice Administrator, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Hal M. Weitzbuch, M.d. Medical Corporation is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by March 31, 2027
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
5Medicare enrollment records show 5 clinicians reassign Medicare billing to Hal M. Weitzbuch, M.D. Medical Corporation, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.
Clinicians, nearest first (5)
San Francisco, CA 94115
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
CLIA Laboratory Certificates CMS CLIA
Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.
Certificate of Compliance 05D0684253
Hal M. Weitzbuch, M.D., Medical Corporation · Calabasas, CAFrequently 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 Hal M. Weitzbuch, M.D. Medical Corporation's NPI number?
The NPI number for Hal M. Weitzbuch, M.D. Medical Corporation is 1639420177. It was assigned to this organization in the NPPES registry on September 24, 2012. The provider is doing business as Brilliance Dermatology and Calabasas Dermatology Center.
Where is Hal M. Weitzbuch, M.D. Medical Corporation located?
Hal M. Weitzbuch, M.D. Medical Corporation is located at 23501 Park Sorrento Ste 216, Calabasas, CA 91302. The listed phone number is (818) 222-7495.
What is Hal M. Weitzbuch, M.D. Medical Corporation's specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Medical Specialty, with taxonomy code 261QM2500X.
Is Hal M. Weitzbuch, M.D. Medical Corporation enrolled in Medicare?
Yes. Hal M. Weitzbuch, M.D. Medical Corporation is registered in the Medicare PECOS enrollment system.
When is Hal M. Weitzbuch, M.D. Medical Corporation's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (California, Clinic/Group Practice) is due for revalidation by March 31, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through Hal M. Weitzbuch, M.D. Medical Corporation?
According to the CMS Revalidation Reassignment List (October 2026 release), 5 clinicians reassign their Medicare billing to Hal M. Weitzbuch, M.D. Medical Corporation, in Dermatology, Nurse Practitioner and Radiation Oncology. 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, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Hal M. Weitzbuch, M.D. Medical Corporation accept?
Health plans from Alliant Health Plans, Inc., Ambetter Health, Ambetter Health of Delaware, Ambetter from Absolute Total Care and Ambetter from Arkansas Health & Wellness and 27 other insurers list Hal M. Weitzbuch, M.D. Medical Corporation as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Hal M. Weitzbuch, M.D. Medical Corporation was last updated on January 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Hal M. Weitzbuch, M.d. Medical Corporation · NPI 1639420177
Medical Specialty organization in Calabasas, California. Organization record, active in the CMS NPPES registry since September 24, 2012.
## Identity
- **NPI:** 1639420177 (Entity type: Organization)
- **Enumerated:** September 24, 2012
- **Primary specialty:** Clinic/Center - Medical Specialty · taxonomy 261QM2500X
- **Also known as:** Brilliance Dermatology (Doing Business As); Calabasas Dermatology Center (Doing Business As)
- **Organization subpart:** No
- **Authorized official:** Jan West, PRACTICE ADMINISTRATOR
## Practice location
- **Address:** 23501 PARK SORRENTO STE 216, Calabasas, CA 91302-1383
- **Phone:** (818) 222-7495 · **Fax:** (818) 222-7498
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** March 31, 2027 (Non-DME Part B, California, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 5 clinicians in 3 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Dermatology (2), Radiation Oncology (2), Nurse Practitioner (1); 1 practice at this address · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** January 5, 2026
- **CLIA laboratory certificates:** 1 on file
---
Source: [NPI Profile](https://npiprofile.com/npi/1639420177) · Data from the CMS NPPES public registry.