1. Home
  2. Directory
  3. New York
  4. New York New York
  5. Orthopaedic Surgery
  6. NPI Profile

ROBERT G MARX MD
NPI 1083643068
Orthopaedic Surgery - Sports Medicine in New York, NY

Active since July 01, 2006Opted out of Medicare · through Jan 1, 2028
519 E 72ND ST, NEW YORK, NY 10021(212) 606-1645 Get Directions Write a Review

NPPES record last updated: April 8, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Robert G Marx Md NPPES

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

ROBERT G MARX MD (NPI 1083643068) is an individual sports medicine provider in New York, New York, licensed in New York (222329) and active in the NPI registry since July 2006. He has opted out of Medicare through January 1, 2028 and remains eligible to order and refer.

NPPES Registry Identity

NPI1083643068
Entity TypeIndividualMale
Primary Taxonomy207XX0005X
Provider Legal NameROBERT G MARXCredential: MD
Location Address519 E 72ND STNew York, NY 10021-4028
Mailing Address535 E 70th StNew York, NY 10021-4872 · (212) 606-1645
Phone(212) 606-1645
Sole ProprietorYes
Enumeration DateJuly 1, 2006
Last NPPES UpdateApril 8, 2021
NPPES CertifiedApril 8, 2021
✔ NPI 1083643068 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic Surgery · Sports MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207XX0005X
License✔ Licensed in NY · 222329
Definition
An orthopaedic surgeon trained in sports medicine provides appropriate care for all structures of the musculoskeletal system directly affected by participation in sporting activity. This specialist is proficient in areas including conditioning, training and fitness, athletic performance and the impact of dietary supplements, pharmaceuticals, and nutrition on performance and health, coordination of care within the team setting utilizing other health care professionals, field evaluation and management, soft tissue biomechanics and injury healing and repair. Knowledge and understanding of the principles and techniques of rehabilitation, athletic equipment and orthotic devices enables the specialist to prevent and manage athletic injuries.
519 E 72ND ST, New York, NY 10021
Open in Google Maps ↗

Other Identifiers 2

Other453F82NY · Empire Blue Cross
OtherP2103456NY · Oxford

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Robert G Marx Md has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from January 1, 2016 through January 1, 2028.

Opt-Out Effective DateJanuary 1, 2016
Opt-Out In Effect ThroughJanuary 1, 2028Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

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.

PAUL S CHOI M.D.
Radiology (Diagnostic Radiology)
519 E 72ND ST, SUITE 103
NEW YORK, NY 10021
New York County (212) 288-1575
MARK PINALS MD
Radiology (Diagnostic Radiology)
519 E 72ND ST, SUITE #103
NEW YORK, NY 10021
New York County (212) 288-1575
BARBARA H BRAFFMAN M.D.
Specialist
519 E 72ND ST, SUITE 103
NEW YORK, NY 10021
New York County (212) 288-1575
ROBERT LUDWIG M.D.
Radiology (Diagnostic Ultrasound)
519 E 72ND ST, SUITE 103
NEW YORK, NY 10021
New York County (212) 288-1575
GWEN N HARRIS MD
Specialist
519 E 72ND ST, STE 103
NEW YORK, NY 10021
New York County (212) 288-1575
DR. RICHARD J KATZ M.D.
Radiology (Diagnostic Radiology)
519 E 72ND ST, STE 103
NEW YORK, NY 10021
New York County (212) 288-1575
DR. STEPHEN D GREENBERG M.D.
Radiology (Diagnostic Radiology)
519 E 72ND ST, STE. 103
NEW YORK, NY 10021
New York County (212) 288-1575
NEW YORK LIMB LENGTHENING & COMPLEX RECONSTRUCTION SURGERY PLLC
Orthopaedic Surgery
519 E 72ND ST
NEW YORK, NY 10021
New York County (212) 606-1415

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 Robert Marx's NPI number?

The NPI number for Robert Marx is 1083643068. It was assigned to this individual provider in the NPPES registry on July 1, 2006.

Where is Robert Marx located?

Robert Marx practices at 519 E 72nd St, New York, NY 10021. The listed phone number is (212) 606-1645.

What is Robert Marx's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Sports Medicine, with taxonomy code 207XX0005X.

Is Robert Marx enrolled in Medicare?

No. Robert Marx has opted out of Medicare through January 1, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Robert Marx was last updated on April 8, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.