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ADITI MAJUMDAR
NPI 1144608381
Orthopaedic Surgery - Sports Medicine in Orange, CA

Active since May 08, 2015PECOS Enrolled
1310 W STEWART DR STE 508, ORANGE, CA 92868(714) 633-2111(844) 387-7625 Get Directions Write a Review

NPPES record last updated: December 13, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 13, 2021, Aug 3, 2020 (2 updates tracked since 2020).

About Aditi Majumdar NPPES

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

ADITI MAJUMDAR (NPI 1144608381) is an individual sports medicine provider in Orange, California, licensed in California (A175317) and active in the NPI registry since May 2015. She is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1144608381
Entity TypeIndividualFemale
Primary Taxonomy207XX0005X
Provider Legal NameADITI MAJUMDAR
Location Address1310 W STEWART DR STE 508Orange, CA 92868-3856
Mailing Address1310 W Stewart Dr Ste 508Orange, CA 92868-3856 · (714) 633-2111
Phone(714) 633-2111
Fax(844) 387-7625
Sole ProprietorNo
Enumeration DateMay 8, 2015
Last NPPES UpdateDecember 13, 20212 updates tracked since enumeration
NPPES CertifiedDecember 13, 2021
✔ NPI 1144608381 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic Surgery · Sports MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207XX0005X
Licenses✔ Licensed in CA · A175317✔ Licensed in MA · 283485
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.
1310 W STEWART DR STE 508, Orange, CA 92868
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Secondary Practice Locations 2

Location 1300 Longwood AveBoston, MA 02115-5724 · Phone (617) 355-6000
Location 2Msc 10 5600, 1 University of New MexicoAlbuquerque, NM 87131-0001 · Phone (505) 272-4107 · Fax (505) 272-8098

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Aditi Majumdar is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignment

Medicare enrollment records show Aditi Majumdar reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Adult And Pediatric Orthopaedic Specialists A Medical Group Inc
Same address
Specialist
1310 W STEWART DR, SUITE 508
Orange, CA 92868
  • Reassigned Medicare billing, California enrollment
  • 11 clinicians in this Medicare group
NPI 1902831514 (714) 633-2111

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.

MOHAMMED ABBAS MD
Orthopaedic Surgery
1310 W STEWART DR STE 508
ORANGE, CA 92868
Orange County (714) 633-2111
LISA ANN CAO M.D.
Orthopaedic Surgery
1310 W STEWART DR STE 508
ORANGE, CA 92868
Orange County (714) 633-2111
CHELSEA CHOI
Physician Assistant
1310 W STEWART DR STE 508
ORANGE, CA 92868
Orange County (714) 633-2111
DR. KELLY FRANCES DAVIS MD
Pediatrics (Sports Medicine)
1310 W STEWART DR STE 508
ORANGE, CA 92868
Orange County (714) 633-2111
DR. CLAUDIO BALLESTER M.D.
Orthopaedic Surgery
1310 W STEWART DR STE 508
ORANGE, CA 92868
Orange County (714) 633-2111
AMIRHOSSEIN MISAGHI M.D.
Orthopaedic Surgery (Pediatric Orthopaedic Surgery)
1310 W STEWART DR STE 508
ORANGE, CA 92868
Orange County (714) 633-2111
LEIGH DEYARMOND RABIDEAUX CPNP
Registered Nurse (Pediatrics)
1310 W STEWART DR STE 508
ORANGE, CA 92868
Orange County (714) 633-2111
MS. MARILEAH D. RIGOR CPNP
Nurse Practitioner (Pediatrics)
1310 W STEWART DR STE 508
ORANGE, CA 92868
Orange County (714) 633-2111

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 Aditi Majumdar's NPI number?

The NPI number for Aditi Majumdar is 1144608381. It was assigned to this individual provider in the NPPES registry on May 8, 2015.

Where is Aditi Majumdar located?

Aditi Majumdar practices at 1310 W Stewart Dr Ste 508, Orange, CA 92868. The listed phone number is (714) 633-2111.

What is Aditi Majumdar's specialty?

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

Is Aditi Majumdar enrolled in Medicare?

Yes. Aditi Majumdar is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Aditi Majumdar's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Aditi Majumdar reassigns Medicare benefits to Adult And Pediatric Orthopaedic Specialists A Medical Group Inc (Orange, 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 Aditi Majumdar'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 Aditi Majumdar was last updated on December 13, 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.