DR. FREDERICK JOSEPH KRETZSCHMAR MD
NPI 1245348861
Pathology - Anatomic Pathology & Clinical Pathology in Greenbrae, CA
About Dr. Frederick Joseph Kretzschmar Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. FREDERICK JOSEPH KRETZSCHMAR MD (NPI 1245348861) is an individual anatomic pathology & clinical pathology provider in Greenbrae, California, licensed in California (G49874) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of Vanderbilt University School Of Medicine (1981).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 3
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. Frederick Joseph Kretzschmar Md 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 Frederick Kretzschmar reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Greenbrae, CA 94904
- Reassigned Medicare billing, California enrollment
- 13 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 20
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94904 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
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.
GREENBRAE, CA 94904
GREENBRAE, CA 94904
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 Frederick Kretzschmar's NPI number?
The NPI number for Frederick Kretzschmar is 1245348861. It was assigned to this individual provider in the NPPES registry on August 25, 2006.
Where is Frederick Kretzschmar located?
Frederick Kretzschmar practices at 250 Bon Air Rd, Greenbrae, CA 94904. The listed phone number is (415) 925-7174.
What is Frederick Kretzschmar's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.
Is Frederick Kretzschmar enrolled in Medicare?
Yes. Frederick Kretzschmar 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 Frederick Kretzschmar's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Frederick Kretzschmar reassigns Medicare benefits to Marin Medical Laboratories (Greenbrae, 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 Frederick Kretzschmar'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 Frederick Kretzschmar was last updated on July 12, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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. Frederick Joseph Kretzschmar, MD · NPI 1245348861
Anatomic Pathology & Clinical Pathology physician in Greenbrae, California. Individual provider, active in the CMS NPPES registry since August 25, 2006.
## Identity
- **NPI:** 1245348861 (Entity type: Individual)
- **Enumerated:** August 25, 2006
- **Primary specialty:** Pathology - Anatomic Pathology & Clinical Pathology · taxonomy 207ZP0102X
- **State license:** G49874 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 250 BON AIR RD, Greenbrae, CA 94904
- **Phone:** (415) 925-7174 · **Fax:** (415) 898-0870
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Marin Medical Laboratories (NPI 1053417386, Greenbrae, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Vanderbilt University School Of Medicine, class of 1981
## Record status
- **NPPES last updated:** July 12, 2007
- **Other identifiers:** Medicare ID-Type Unspecified CA00G498740 (CA); Medicare UPIN A51492; Medicaid 00G498740 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1245348861) · Data from the CMS NPPES public registry.