Joseph Robert Duff
Orthopaedic Foot and Ankle Surgery Physician · Sacramento, CA
Joseph Robert Duff is an orthopaedic foot and ankle surgery physician with a practice address in Sacramento, California, and NPI 1215515416, issued on Mar 30, 2021. Check the license (California 206817, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joseph Robert Duff
- Primary taxonomy
- Orthopaedic Foot and Ankle Surgery Physician 207XX0004X
- License number
- 206817 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3301 C St Ste 1600, Sacramento, CA 95816
- Phone
- (916) 734-2700
- Enumerated
- Mar 30, 2021
- Record last updated
- Jul 31, 2026
- Fax
- (916) 734-7137
- Entity
- Type 1 · individual
8 nearest orthopaedic foot and ankle surgery physician records → All 71 in California → Look up another NPI →
Also registered at 3301 C St Ste 1600
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alexandra Ernst, MD, MPHOrthopaedic Foot and Ankle Surgery Physician1144845900
- David HaganOrthopaedic Foot and Ankle Surgery Physician1992238257
- Daniel Herman, MD, PHDSports Medicine (Physical Medicine & Rehabilitation) Physician1245499060
- Marissa Jong-Delgado, PT, DPTPhysical Medicine & Rehabilitation Physician1922578814
- Richard Marder, MDSports Medicine (Orthopaedic Surgery) Physician1477543742
- Mariano Menendez Furrer, M.D.Sports Medicine (Orthopaedic Surgery) Physician1841646023
Verify Joseph Robert Duff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 206817Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average orthopaedic foot and ankle surgery physician in 2024
39 Medicare Part D claims for 13 beneficiaries, against an average of 225 among the 648 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Joseph Robert Duff among 71 orthopaedic foot and ankle surgery physician records in California
Joseph Robert Duff is one of 71 orthopaedic foot and ankle surgery physician records with a practice address in California. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 93% of them.
- NPI issued2021 · 93% of these records are older, 3% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 72% of these records are
- Record last updated2026 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XX0004X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Foot and Ankle Surgery Physician providers in California
There are 71 orthopaedic foot and ankle surgery physician records in California.
All 71 in California → Every provider in Sacramento → Orthopaedic Foot and Ankle Surgery Physician nationwide →
The 8 orthopaedic foot and ankle surgery physician records with the nearest ZIP codes
- Alexandra Ernst, MD, MPHSacramento, CA 958161144845900
- Masoud Ghalambor, M.D.Sacramento, CA 958161285740811
- Eric Giza, M.D.Sacramento, CA 958161811987571
- David HaganSacramento, CA 958161992238257
- Yuhwan Hong, M.D.Sacramento, CA 958161023203924
- Amanda Anderson, MDSacramento, CA 958171265011225
- Calvin Hu, M.D.Chico, CA 959281093724635
- Anthony SchwabRedding, CA 960011770215527
Common questions
What is Joseph Robert Duff's NPI number?
Joseph Robert Duff's National Provider Identifier (NPI) is 1215515416, issued on Mar 30, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Joseph Robert Duff located?
The NPPES record lists a practice address at 3301 C St Ste 1600, Sacramento, CA, 95816. Phone: (916) 734-2700. Providers update this record themselves, so call before visiting.
How can I verify Joseph Robert Duff's license?
NPPES lists California license number 206817, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Joseph Robert Duff prescribe under Medicare Part D?
In 2024, Joseph Robert Duff had 39 Medicare Part D claims for 13 beneficiaries; the average among orthopaedic foot and ankle surgery physician prescribers was 225. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.