WEISMAN MEDICAL GROUP
NPI 1144332859
Clinic/Center - Medical Specialty in Palo Alto, CA
About Weisman Medical Group NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WEISMAN MEDICAL GROUP (NPI 1144332859) is a healthcare organization registered as a medical specialty in Palo Alto, California and active in the NPI registry since August 2006. The organization lists Stuart Martin Weisman, Ceo, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
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)
Weisman Medical Group is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by January 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
Medicare enrollment records show 1 clinician reassigns Medicare billing to Weisman Medical Group, which bills Medicare for the services this clinician delivers.
Clinician (1)
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 Stuart Martin Weisman, MD, In's NPI number?
The NPI number for Stuart Martin Weisman, MD, In is 1144332859. It was assigned to this organization in the NPPES registry on August 31, 2006. The provider is doing business as Weisman Medical Group.
Where is Stuart Martin Weisman, MD, In located?
Stuart Martin Weisman, MD, In is located at 900 Welch Rd Suite 105, Palo Alto, CA 94304. The listed phone number is (650) 322-2900.
What is Stuart Martin Weisman, MD, In's specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Medical Specialty, with taxonomy code 261QM2500X.
Is Stuart Martin Weisman, MD, In enrolled in Medicare?
Yes. Stuart Martin Weisman, MD, In is registered in the Medicare PECOS enrollment system.
When is Stuart Martin Weisman, MD, In'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 January 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 Stuart Martin Weisman, MD, In?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Gastroenterology) reassigns their Medicare billing to Stuart Martin Weisman, MD, In. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Stuart Martin Weisman, MD, In 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.
# Weisman Medical Group · NPI 1144332859
Medical Specialty organization in Palo Alto, California. Organization record, active in the CMS NPPES registry since August 31, 2006.
## Identity
- **NPI:** 1144332859 (Entity type: Organization)
- **Enumerated:** August 31, 2006
- **Primary specialty:** Clinic/Center - Medical Specialty · taxonomy 261QM2500X
- **Legal business name:** Stuart Martin Weisman, Md, In
- **Organization subpart:** No
- **Authorized official:** Stuart Weisman, CEO
## Practice location
- **Address:** 900 WELCH RD, SUITE 105, Palo Alto, CA 94304-1805
- **Phone:** (650) 322-2900 · **Fax:** (650) 322-2904
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** January 31, 2027 (Non-DME Part B, California, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 1 clinician (Gastroenterology) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 22, 2020
---
Source: [NPI Profile](https://npiprofile.com/npi/1144332859) · Data from the CMS NPPES public registry.