STEPHEN J HUFFAKER MD, PHD
NPI 1861713000
Orthopaedic Surgery in Redwood City, CA
About Stephen J Huffaker Md, Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEPHEN J HUFFAKER MD, PHD (NPI 1861713000) is an individual orthopaedic surgery provider in Redwood City, California, licensed in California (A135749) and active in the NPI registry since June 2010. He is enrolled in Medicare PECOS and is a graduate of Harvard Medical School (2010).
NPPES Registry Identity
Specialties & Licenses 2
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
Stephen J Huffaker Md, Phd 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 Stephen Huffaker reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Redwood City, CA 94063
- Reassigned Medicare billing, California enrollment
- 20,078 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 94063 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.
REDWOOD CITY, CA 94063
REDWOOD CITY, CA 94063
REDWOOD CITY, CA 94063
REDWOOD CITY, CA 94063
REDWOOD CITY, CA 94063
REDWOOD CITY, CA 94063
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 Stephen Huffaker's NPI number?
The NPI number for Stephen Huffaker is 1861713000. It was assigned to this individual provider in the NPPES registry on June 22, 2010.
Where is Stephen Huffaker located?
Stephen Huffaker practices at 450 Broadway St Stanford University School Of Medicine, Dept Of Ortho, Redwood City, CA 94063. The listed phone number is (650) 721-7629.
What is Stephen Huffaker's specialty?
The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.
Is Stephen Huffaker enrolled in Medicare?
Yes. Stephen Huffaker 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 Stephen Huffaker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Huffaker reassigns Medicare benefits to Permanente Medical Group Inc (Redwood City, 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 Stephen Huffaker'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 Stephen Huffaker was last updated on December 17, 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.
# Stephen J Huffaker, MD, PHD · NPI 1861713000
Orthopaedic Surgery physician in Redwood City, California. Individual provider, active in the CMS NPPES registry since June 22, 2010.
## Identity
- **NPI:** 1861713000 (Entity type: Individual)
- **Enumerated:** June 22, 2010
- **Primary specialty:** Orthopaedic Surgery · taxonomy 207X00000X
- **State license:** A135749 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 450 BROADWAY ST, STANFORD UNIVERSITY SCHOOL OF MEDICINE, DEPT OF ORTHO, Redwood City, CA 94063-3132
- **Phone:** (650) 721-7629 · **Fax:** (650) 721-3470
## 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:** Permanente Medical Group Inc (NPI 1639252604, Redwood City, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Harvard Medical School, class of 2010
## Record status
- **NPPES last updated:** December 17, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1861713000) · Data from the CMS NPPES public registry.