ORTHOPAEDIC SPECIALTY INSTITUTE MEDICAL GROUP OF ORANGE COUNTY
NPI 1336228832
Orthopaedic Surgery in Orange, CA

Active since November 03, 2006CLIA 05D2342930 · Waiver
363 S MAIN ST STE 220, ORANGE, CA 92868(714) 634-4567(714) 634-4569 Get Directions Write a Review

NPPES record last updated: March 14, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Orthopaedic Specialty Institute Medical Group Of Orange County NPPES

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

ORTHOPAEDIC SPECIALTY INSTITUTE MEDICAL GROUP OF ORANGE COUNTY (NPI 1336228832) is a healthcare organization registered as an orthopaedic surgery in Orange, California and active in the NPI registry since November 2006. The organization holds a CLIA Waiver certificate valid through April 28, 2028 and lists Michelle Dexter, Contracting Liaison, as its authorized official.

NPPES Registry Identity

NPI1336228832
Entity TypeOrganization
Primary Taxonomy207X00000X
Legal Business NameORTHOPAEDIC SPECIALTY INSTITUTE MEDICAL GROUP OF ORANGE COUNTY
Location Address363 S MAIN ST STE 220Orange, CA 92868-3816
Mailing Address363 S Main St Ste 220Orange, CA 92868-3816 · (714) 634-4567 · Fax (714) 634-4569
Fax(714) 634-4569
Organization SubpartNo
Authorized OfficialMichelle DexterContracting Liaison · (714) 937-2155
Enumeration DateNovember 3, 2006
Last NPPES UpdateMarch 14, 2025
NPPES CertifiedMarch 14, 2025
✔ NPI 1336228832 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207X00000X
Definition
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.
363 S MAIN ST STE 220, Orange, CA 92868

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Orthopaedic Specialty Institute Medical Group Of Orange County is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by March 31, 2027

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateCaliforniaEnrollment IDO20100930081935DME · Physician - Orthopedic/Orthopedic SurgeryDue dateMarch 31, 2027
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

44

Medicare enrollment records show 44 clinicians reassign Medicare billing to Orthopaedic Specialty Institute Medical Group Of Orange County, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 25 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 10

Orthopedic Surgery24
Hand Surgery4
Neurosurgery4
Physical Medicine and Rehabilitation4
Nurse Practitioner3
Family Practice1
Interventional Pain Management1
Pain Management1
2 other specialties2

Nearest to this location (20)

See all 44
Hand Surgery
NPI 1205256229
363 S MAIN ST STE 220
Orange, CA 92868
(714) 634-4567
✔ PECOS✔ Accepts MedicareSame address
Orthopedic Surgery
NPI 1538393889
363 S MAIN ST STE 220
Orange, CA 92868
(714) 937-2158
✔ PECOS✔ Accepts MedicareSame address
Orthopedic Surgery
NPI 1790721025
280 S MAIN ST STE 200
Orange, CA 92868
(714) 634-4567
✔ PECOS✔ Accepts Medicare0.1 mi
Orthopedic Surgery
NPI 1972861540
280 S MAIN ST STE 200
Orange, CA 92868
(714) 634-4567
✔ PECOS✔ Accepts Medicare0.1 mi
Orthopedic Surgery
NPI 1851827661
280 S MAIN ST STE 200
Orange, CA 92868
(714) 634-4567
✔ PECOS✔ Accepts Medicare0.1 mi
Orthopedic Surgery
NPI 1083118616
280 S MAIN ST STE 200
Orange, CA 92868
(714) 634-4567
✔ PECOS✔ Accepts Medicare0.1 mi
Pain Management
NPI 1902828569
280 S MAIN ST STE 200
Orange, CA 92868
(714) 634-4567
✔ PECOS✔ Accepts Medicare0.1 mi
Pediatric Medicine
NPI 1861848947
280 S MAIN ST STE 200
Orange, CA 92868
(714) 634-4567
✔ PECOS✔ Accepts Medicare0.1 mi
Orthopedic Surgery
NPI 1386631406
280 S MAIN ST STE 200
Orange, CA 92868
(714) 634-4567
✔ PECOS0.6 mi
Physical Medicine and Rehabilitation
NPI 1659368777
280 S MAIN ST STE 200
Orange, CA 92868
(714) 634-4567
✔ PECOS✔ Accepts Medicare0.6 mi
Orthopedic Surgery
NPI 1407019391
280 S MAIN ST STE 200
Orange, CA 92868
(714) 634-4567
✔ PECOS✔ Accepts Medicare0.6 mi
Hand Surgery
NPI 1518159961
280 S MAIN ST STE #200
Orange, CA 92868
(714) 634-4567
✔ PECOS✔ Accepts Medicare0.6 mi
Nurse Practitioner
NPI 1891151148
280 S MAIN ST
Orange, CA 92868
(714) 634-4567
✔ PECOS✔ Accepts Medicare0.6 mi
Sports Medicine
NPI 1508055393
280 S MAIN ST SUITE 200
Orange, CA 92868
(714) 634-4567
✔ PECOS✔ Accepts Medicare0.6 mi
Physical Medicine and Rehabilitation
NPI 1598082919
280 S MAIN ST STE 200
Orange, CA 92868
(714) 634-4567
✔ PECOS✔ Accepts Medicare0.6 mi
Orthopedic Surgery
NPI 1982900890
280 S MAIN ST
Orange, CA 92868
(714) 634-4567
✔ PECOS✔ Accepts Medicare0.6 mi
Family Practice
NPI 1689935355
280 S MAIN ST STE 200
Orange, CA 92868
(714) 634-4567
✔ PECOS✔ Accepts Medicare0.6 mi
Orthopedic Surgery
NPI 1992792097
280 S MAIN ST STE 200
Orange, CA 92868
(714) 634-4567
✔ PECOS✔ Accepts Medicare0.6 mi
Hand Surgery
NPI 1114914397
280 S MAIN ST SUITE 200
Orange, CA 92868
(714) 634-4567
✔ PECOS✔ Accepts Medicare0.6 mi
Nurse Practitioner
NPI 1215924592
280 S MAIN ST STE 200
Orange, CA 92868
(714) 634-4567
✔ PECOS✔ Accepts Medicare0.6 mi
See all 44 clinicians

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D2342930

Orthopaedic Specialty Institute · Orange, CA
Active · expires Apr 28, 2028
CLIA Number05D2342930
Laboratory TypeAmbulatory Surgery Center
Certificate Effective DateApril 29, 2026
Certificate Expiration DateApril 28, 2028
Laboratory DirectorRivadeneyra Adam
Laboratory Phone(714) 634-4567
Laboratory LocationOrthopaedic Specialty Institute363 S Main Street, Suite 220, Orange, CA 92868
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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 Orthopaedic Specialty Institute Medical Group Of Orange County's NPI number?

The NPI number for Orthopaedic Specialty Institute Medical Group Of Orange County is 1336228832. It was assigned to this organization in the NPPES registry on November 3, 2006.

Where is Orthopaedic Specialty Institute Medical Group Of Orange County located?

Orthopaedic Specialty Institute Medical Group Of Orange County is located at 363 S Main St Ste 220, Orange, CA 92868. The listed phone number is (714) 634-4567.

What is Orthopaedic Specialty Institute Medical Group Of Orange County's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Is Orthopaedic Specialty Institute Medical Group Of Orange County enrolled in Medicare?

Yes. Orthopaedic Specialty Institute Medical Group Of Orange County is registered in the Medicare PECOS enrollment system.

When is Orthopaedic Specialty Institute Medical Group Of Orange County's Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare DME enrollment for this organization (California, Physician - Orthopedic/Orthopedic Surgery) is due for revalidation by March 31, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

How many clinicians bill Medicare through Orthopaedic Specialty Institute Medical Group Of Orange County?

According to the CMS Revalidation Reassignment List (October 2026 release), 44 clinicians in 10 Medicare specialties reassign their Medicare billing to Orthopaedic Specialty Institute Medical Group Of Orange County. A 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 the clinician's services. The largest specialties are Orthopedic Surgery (24), Hand Surgery (4) and Neurosurgery (4). Of these, 2 practice at this address and 25 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Orthopaedic Specialty Institute Medical Group Of Orange County hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D2342930) is associated with this NPI, valid through April 28, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Orthopaedic Specialty Institute Medical Group Of Orange County was last updated on March 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.