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JOSEPH ROBERT DUFF
NPI 1215515416
Orthopaedic Surgery - Foot and Ankle Surgery in Sacramento, CA

Active since March 30, 2021PECOS EnrolledAccepts Medicare Assignment
3301 C ST STE 1600, SACRAMENTO, CA 95816(916) 734-2700(916) 734-7137 Get Directions Write a Review

NPPES record last updated: July 31, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jul 31, 2026, Mar 30, 2021 (2 updates tracked since 2021).

About Joseph Robert Duff NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOSEPH ROBERT DUFF (NPI 1215515416) is an individual foot and ankle surgery provider in Sacramento, California, licensed in California (206817) and active in the NPI registry since March 2021. He is enrolled in Medicare PECOS, maintains a secondary practice location in Reno, and is a graduate of University Of Toledo College Of Medicine (2021).

NPPES Registry Identity

NPI1215515416
Entity TypeIndividualMale
Primary Taxonomy207XX0004X
Provider Legal NameJOSEPH ROBERT DUFF
Location Address3301 C ST STE 1600Sacramento, CA 95816-3384
Mailing Address4860 Y St Ste 3800Sacramento, CA 95817-2307 · (916) 734-5885 · Fax (916) 734-7904
Phone(916) 734-2700
Fax(916) 734-7137
Sole ProprietorNo
Medical School CMSUniversity Of Toledo College Of MedicineGraduated 2021
Enumeration DateMarch 30, 2021
Last NPPES UpdateJuly 31, 20262 updates tracked since enumeration
NPPES CertifiedJuly 31, 2026
✔ NPI 1215515416 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic Surgery · Foot and Ankle SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207XX0004X
License✔ Licensed in CA · 206817
Definition
Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, foot and ankle surgeons deal with adult reconstructive foot and ankle surgery, adult foot and ankle trauma, sports medicine foot and ankle, and children's foot and ankle reconstructive surgery.
3301 C ST STE 1600, Sacramento, CA 95816
Open in Google Maps ↗

Secondary Practice Location 1

Location 1555 N Arlington AveReno, NV 89503-4723 · Phone (775) 786-3040

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Molina Healthcare.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

Joseph Robert Duff 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.

PECOS PAC ID9032681176
PECOS Enrollment IDI20260618004320
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Joseph Duff reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Regents Of The University Of Ca
0.3 mi
Hematology & Oncology
1508 ALHAMBRA BLVD
Sacramento, CA 95816
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Regents Of The Univ Of Ca
  • 2,570 clinicians in this Medicare group
NPI 1528051679 (916) 734-5803
Reno Orthopaedic Clinic, Ltd
101 mi
Orthopaedic Surgery
1365 MEDICAL PARKWAY
Carson City, NV 89703
  • Reassigned Medicare billing, Nevada enrollment
  • 75 clinicians in this Medicare group
NPI 1790252120 (775) 786-3040

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 8

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. DANIEL C HERMAN MD, PHD
Physical Medicine & Rehabilitation (Sports Medicine)
3301 C ST STE 1600
SACRAMENTO, CA 95816
Sacramento County (916) 734-6805
DAYTON SNYDER MD
Physical Medicine & Rehabilitation (Sports Medicine)
3301 C ST STE 1600
SACRAMENTO, CA 95816
Sacramento County (916) 734-6805
ALYSSA SPECIALE M.D.
Physical Medicine & Rehabilitation (Sports Medicine)
3301 C ST STE 1600
SACRAMENTO, CA 95816
Sacramento County (916) 734-6805
DR. RICHARD A. MARDER MD
Orthopaedic Surgery (Sports Medicine)
3301 C ST STE 1600
SACRAMENTO, CA 95816
Sacramento County (916) 734-5566
WILLIAM A RIECK JR. DO
Physical Medicine & Rehabilitation (Sports Medicine)
3301 C ST STE 1600
SACRAMENTO, CA 95816
Sacramento County (916) 734-6805
DR. MARIANO MENENDEZ FURRER M.D.
Orthopaedic Surgery (Sports Medicine)
3301 C ST STE 1600
SACRAMENTO, CA 95816
Sacramento County (916) 734-6805
DR. CESAR TRIVINO JR.
Student in an Organized Health Care Education/Training Program
3301 C ST STE 1600
SACRAMENTO, CA 95816
Sacramento County (916) 734-6805
MARISSA JONG-DELGADO PT, DPT
Physical Medicine & Rehabilitation
3301 C ST STE 1600
SACRAMENTO, CA 95816
Sacramento County (916) 734-6805

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 Joseph Duff's NPI number?

The NPI number for Joseph Duff is 1215515416. It was assigned to this individual provider in the NPPES registry on March 30, 2021.

Where is Joseph Duff located?

Joseph Duff practices at 3301 C St Ste 1600, Sacramento, CA 95816. The listed phone number is (916) 734-2700.

What is Joseph Duff's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Foot and Ankle Surgery, with taxonomy code 207XX0004X.

Is Joseph Duff enrolled in Medicare?

Yes. Joseph Duff 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 Joseph Duff's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Joseph Duff reassigns Medicare benefits to 2 organizations: Regents Of The University Of Ca (Sacramento, CA) and Reno Orthopaedic Clinic, Ltd (Carson City, NV). 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 Joseph Duff's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Joseph Duff accept?

Health plans from Molina Healthcare list Joseph Duff 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 Joseph Duff was last updated on July 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.