Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Richard A. Marder, MD

Sports Medicine (Orthopaedic Surgery) Physician in Sacramento, CA · enumerated 2005.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1477543742

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Registry record

Entity type Individual (Type 1)

Name Dr. Richard A. Marder

Credential MD

Sex Male

Practice address 3301 C St Ste 1600, Sacramento, CA, 95816

Phone (916) 734-5566

Fax (916) 734-6806

Enumeration date Oct 26, 2005

Last updated in NPPES Sep 27, 2022

Taxonomy & licenses

207XX0005X Sports Medicine (Orthopaedic Surgery) Physician Allopathic & Osteopathic Physicians · License G46905 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
00G469050	Medicaid	CA	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify Richard Marder's NPI record?

Cross-check NPI 1477543742 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1477543742 active?

Yes, as of the latest NPPES snapshot, NPI 1477543742 is active (record last updated 2022-09-27).

Other providers at this practice address

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Daniel Herman Sports Medicine (Physical Medicine & Rehabilitation) Physician · Sacramento, CA NPI 1245499060 Alyssa Speciale Sports Medicine (Physical Medicine & Rehabilitation) Physician · Sacramento, CA NPI 1396126249 Mariano Menendez Furrer Sports Medicine (Orthopaedic Surgery) Physician · Sacramento, CA NPI 1841646023 David Hagan Orthopaedic Foot and Ankle Surgery Physician · Sacramento, CA NPI 1992238257 William Rieck Sports Medicine (Physical Medicine & Rehabilitation) Physician · Sacramento, CA NPI 1669992418 Marissa Jong-Delgado Physical Medicine & Rehabilitation Physician · Sacramento, CA NPI 1922578814 Alexandra Ernst Orthopaedic Foot and Ankle Surgery Physician · Sacramento, CA NPI 1144845900 Cesar Trivino Student in an Organized Health Care Education/Training Program · Sacramento, CA NPI 1861079204

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-09-27.