DR. LOREN RISKIN MD
NPI 1700027778
Anesthesiology in Stanford, CA
About Dr. Loren Riskin Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. LOREN RISKIN MD (NPI 1700027778) is an individual anesthesiology provider in Stanford, California, licensed in California (A113117) and active in the NPI registry since March 2009. She is enrolled in Medicare PECOS and is a graduate of Duke University School Of Medicine (2009).
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 (PECOS)
Dr. Loren Riskin Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Loren Riskin reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Palo Alto, CA 94304
- Reassigned Medicare billing, California enrollment
- 833 clinicians in this Medicare group
Redwood City, CA 94063
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- 810 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 2
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.
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.
Other Providers at the Same Location NPPES 13
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
STANFORD, CA 94305
STANFORD, CA 94305
STANFORD, CA 94305
STANFORD, CA 94305
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 Loren Riskin's NPI number?
The NPI number for Loren Riskin is 1700027778. It was assigned to this individual provider in the NPPES registry on March 20, 2009.
Where is Loren Riskin located?
Loren Riskin practices at 300 Pasteur Dr Rm H3580 Stanford University Hospital, Stanford, CA 94305. The listed phone number is (650) 723-4000.
What is Loren Riskin's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Loren Riskin enrolled in Medicare?
Yes. Loren Riskin is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Loren Riskin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Loren Riskin reassigns Medicare benefits to 3 organizations: Cep America - Anesthesia PC (Palo Alto, CA), Permanente Medical Group Inc (Redwood City, CA) and John Muir Trauma Physicians Billing Service (Walnut Creek, 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 Loren Riskin'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 Loren Riskin was last updated on December 15, 2021. 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.
# Dr. Loren Riskin, MD · NPI 1700027778
Anesthesiology physician in Stanford, California. Individual provider, active in the CMS NPPES registry since March 20, 2009.
## Identity
- **NPI:** 1700027778 (Entity type: Individual)
- **Enumerated:** March 20, 2009
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A113117 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 PASTEUR DR RM H3580, STANFORD UNIVERSITY HOSPITAL, Stanford, CA 94305-2200
- **Phone:** (650) 723-4000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Cep America - Anesthesia PC (NPI 1588023949, Palo Alto, CA); Permanente Medical Group Inc (NPI 1639252604, Redwood City, CA); John Muir Trauma Physicians Billing Service (NPI 1093864837, Walnut Creek, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Duke University School Of Medicine, class of 2009
## Record status
- **NPPES last updated:** December 15, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1700027778) · Data from the CMS NPPES public registry.