DR. KAREN ELIZABETH MARK M.D. MPH
NPI 1750491122
Internal Medicine - Infectious Disease in Sacramento, CA
About Dr. Karen Elizabeth Mark M.d. Mph NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. KAREN ELIZABETH MARK M.D. MPH (NPI 1750491122) is an individual infectious disease provider in Sacramento, California, licensed in California (A71951) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Karen Elizabeth Mark M.d. Mph is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Karen Mark reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Sacramento, CA 95814
- Reassigned Medicare billing, California enrollment
- 68 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 95811 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Karen Mark's NPI number?
The NPI number for Karen Mark is 1750491122. It was assigned to this individual provider in the NPPES registry on August 30, 2006.
Where is Karen Mark located?
Karen Mark practices at 1500 21st St, Sacramento, CA 95811. The listed phone number is (916) 443-3299.
What is Karen Mark's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.
Is Karen Mark enrolled in Medicare?
Yes. Karen Mark is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Karen Mark's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karen Mark reassigns Medicare benefits to Cares Community Health (Sacramento, 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 Karen Mark'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 Karen Mark was last updated on November 23, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.