KAREN SHIN MD
NPI 1598858623
Obstetrics & Gynecology in Los Altos, CA
About Karen Shin Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KAREN SHIN MD (NPI 1598858623) is an individual obstetrics & gynecology provider in Los Altos, California, licensed in California (A75669) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS and is a graduate of University Of California, Irvine, California College Of Medicine (1999).
NPPES Registry Identity
Specialties & Licenses
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
Karen Shin 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 Karen Shin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Palo Alto, CA 94301
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1104067115 (California)
- 4,479 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 94022 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 Shin's NPI number?
The NPI number for Karen Shin is 1598858623. It was assigned to this individual provider in the NPPES registry on October 2, 2006.
Where is Karen Shin located?
Karen Shin practices at 370 Distel Cir, Los Altos, CA 94022. The listed phone number is (650) 254-5200.
What is Karen Shin's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Karen Shin enrolled in Medicare?
Yes. Karen Shin 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 Karen Shin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karen Shin reassigns Medicare benefits to Sutter Bay Medical Foundation (Palo Alto, 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 Shin'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 Shin was last updated on February 3, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Karen Shin, MD · NPI 1598858623
Obstetrics & Gynecology physician in Los Altos, California. Individual provider, active in the CMS NPPES registry since October 2, 2006.
## Identity
- **NPI:** 1598858623 (Entity type: Individual)
- **Enumerated:** October 2, 2006
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** A75669 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 370 DISTEL CIR, Los Altos, CA 94022-1404
- **Phone:** (650) 254-5200
## 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:** Sutter Bay Medical Foundation (NPI 1013950807, Palo Alto, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Irvine, California College Of Medicine, class of 1999
## Record status
- **NPPES last updated:** February 3, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1598858623) · Data from the CMS NPPES public registry.