VON STIEFF MEDICAL GROUP
NPI 1568769412
Family Medicine - Addiction Medicine in Concord, CA
About Von Stieff Medical Group NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
VON STIEFF MEDICAL GROUP (NPI 1568769412) is a healthcare organization registered as an addiction medicine in Concord, California and active in the NPI registry since February 2011. The organization holds a CLIA Microscopy certificate valid through May 26, 2027 and lists Kris Del Monte, Administrator, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Group Practice 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)
Von Stieff 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
5Medicare enrollment records show 5 clinicians reassign Medicare billing to Von Stieff Medical Group, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 3 within 10 miles. They are listed nearest first.
Clinicians, nearest first (5)
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 for Provider-Performed Microscopy Procedures (PPMP) 05D0961127
Fred J Von Stieff MD · Concord, 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 Fred J Von Stieff MD A Professional Corporation's NPI number?
The NPI number for Fred J Von Stieff MD A Professional Corporation is 1568769412. It was assigned to this organization in the NPPES registry on February 11, 2011. The provider is doing business as Von Stieff Medical Group.
Where is Fred J Von Stieff MD A Professional Corporation located?
Fred J Von Stieff MD A Professional Corporation is located at 2481 Pacheco St, Concord, CA 94520. The listed phone number is (925) 680-8933.
What is Fred J Von Stieff MD A Professional Corporation's specialty?
The primary specialty registered for this NPI is Family Medicine, specializing in Addiction Medicine, with taxonomy code 207QA0401X.
Is Fred J Von Stieff MD A Professional Corporation enrolled in Medicare?
Yes. Fred J Von Stieff MD A Professional Corporation is registered in the Medicare PECOS enrollment system.
When is Fred J Von Stieff MD A Professional 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 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 Fred J Von Stieff MD A Professional Corporation?
According to the CMS Revalidation Reassignment List (October 2026 release), 5 clinicians reassign their Medicare billing to Fred J Von Stieff MD A Professional Corporation, in Addiction Medicine, Family Practice and Nurse Practitioner. 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, 2 practice at this address and 3 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Fred J Von Stieff MD A Professional Corporation hold a CLIA laboratory certificate?
Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 05D0961127) is associated with this NPI, valid through May 26, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
When was this NPI record last updated?
The NPPES record for Fred J Von Stieff MD A Professional Corporation was last updated on December 16, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Von Stieff Medical Group · NPI 1568769412
Addiction Medicine organization in Concord, California. Organization record, active in the CMS NPPES registry since February 11, 2011.
## Identity
- **NPI:** 1568769412 (Entity type: Organization)
- **Enumerated:** February 11, 2011
- **Primary specialty:** Family Medicine - Addiction Medicine · taxonomy 207QA0401X
- **Legal business name:** Fred J Von Stieff Md A Professional Corporation
- **Organization subpart:** No
- **Authorized official:** Kris Del Monte, ADMINISTRATOR
## Practice location
- **Address:** 2481 PACHECO ST, Concord, CA 94520-2019
- **Phone:** (925) 680-8933
## 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:** 5 clinicians in 3 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Family Practice (2), Nurse Practitioner (2), Addiction Medicine (1); 2 practice at this address and 3 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 16, 2020
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1568769412) · Data from the CMS NPPES public registry.