JEFFREY DAVID KLAUSNER MD
NPI 1508973249
Internal Medicine - Infectious Disease in San Leandro, CA
About Jeffrey David Klausner Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JEFFREY DAVID KLAUSNER MD (NPI 1508973249) is an individual infectious disease provider in San Leandro, California, licensed in California (G81840) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Oakland, and is a graduate of Js Weill Medical College, Cornell University (1991).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 3
Accepted Insurance
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
Jeffrey David Klausner 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 Reassignments
3Medicare enrollment records show Jeffrey Klausner reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Leandro, CA 94577
- Reassigned Medicare billing, California enrollment
- 12 clinicians in this Medicare group
Castro Valley, CA 94546
- Reassigned Medicare billing, California enrollment
- 347 clinicians in this Medicare group
San Francisco, CA 94110
- Reassigned Medicare billing, California enrollment
- 48 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94577 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN LEANDRO, CA 94577
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 Jeffrey Klausner's NPI number?
The NPI number for Jeffrey Klausner is 1508973249. It was assigned to this individual provider in the NPPES registry on August 25, 2006.
Where is Jeffrey Klausner located?
Jeffrey Klausner practices at 201 Dolores Ave, San Leandro, CA 94577. The listed phone number is (510) 984-2489.
What is Jeffrey Klausner's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.
Is Jeffrey Klausner enrolled in Medicare?
Yes. Jeffrey Klausner 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 organizations bill Medicare for Jeffrey Klausner's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jeffrey Klausner reassigns Medicare benefits to 3 organizations: City Health, A Medical Corporation (San Leandro, CA), Bass Medical Group (Castro Valley, CA) and University Of California Sfgh Medical Group (San Francisco, CA). Each 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 Jeffrey Klausner's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Jeffrey Klausner accept?
Health plans from WellSense Health Plan list Jeffrey Klausner 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 Jeffrey Klausner was last updated on December 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Jeffrey David Klausner, MD · NPI 1508973249
Infectious Disease physician in San Leandro, California. Individual provider, active in the CMS NPPES registry since August 25, 2006.
## Identity
- **NPI:** 1508973249 (Entity type: Individual)
- **Enumerated:** August 25, 2006
- **Primary specialty:** Internal Medicine - Infectious Disease · taxonomy 207RI0200X
- **State license:** G81840 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 201 DOLORES AVE, San Leandro, CA 94577-5007
- **Phone:** (510) 984-2489 · **Fax:** (510) 788-6830
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): City Health, A Medical Corporation (NPI 1477940187, San Leandro, CA); Bass Medical Group (NPI 1093181646, Castro Valley, CA); University Of California Sfgh Medical Group (NPI 1366417933, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Js Weill Medical College, Cornell University, class of 1991
## Record status
- **NPPES last updated:** December 16, 2025
- **Other identifiers:** Other 1508973249 (CA); Medicaid 00G818400 (CA); Medicaid 1508973249 (CA)
---
Source: [NPI Profile](https://npiprofile.com/npi/1508973249) · Data from the CMS NPPES public registry.