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ADAM BROOKS MD INC.
NPI 1073893863
Orthopaedic Surgery in Antioch, CA

Active since August 24, 2011
2350 COUNTRY HILLS DRIVE, SUITE B, ANTIOCH, CA 94509(925) 754-5254(925) 754-5286 Get Directions Write a Review

NPPES record last updated: February 15, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Adam Brooks Md Inc. NPPES

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

ADAM BROOKS MD INC. (NPI 1073893863), doing business as Summer S. Seibert Md Inc., is a healthcare organization registered as an orthopaedic surgery in Antioch, California and active in the NPI registry since August 2011. The organization lists Adam Brooks, President, as its authorized official.

NPPES Registry Identity

NPI1073893863
Entity TypeOrganization
Primary Taxonomy207X00000X
Legal Business NameADAM BROOKS MD INC.
Location Address2350 COUNTRY HILLS DRIVE, SUITE BAntioch, CA 94509-7436
Mailing Address2350 Country Hills Drive, Suite BAntioch, CA 94509-7436 · (925) 754-5254 · Fax (925) 754-5286
Phone(925) 754-5254
Fax(925) 754-5286
Organization SubpartNo
Authorized OfficialAdam BrooksPresident · (925) 754-5254
Enumeration DateAugust 24, 2011
Last NPPES UpdateFebruary 15, 2023
NPPES CertifiedFebruary 15, 2023
✔ NPI 1073893863 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207X00000X
License✔ Licensed in CA · G16830
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.
2350 COUNTRY HILLS DRIVE, Antioch, CA 94509
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Other Names 1

Former Legal Business NameSummer S. Seibert Md Inc.

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)

Adam Brooks Md Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by January 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 IDO20120427000117Non-DME Part B · Clinic/Group PracticeDue dateJanuary 31, 2027
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to Adam Brooks MD Inc., which bills Medicare for the services they deliver. Of these, 2 practice within 10 miles. They are listed nearest first.

Clinicians, nearest first (2)

Sumner Seibert, M.D.
General Surgery
NPI 1255350534
3903 LONE TREE WAY SUITE 305
Antioch, CA 94509
(925) 754-5254
✔ PECOS0.3 mi
Adam Brooks, M.D.
Orthopedic Surgery
NPI 1407167703
3240 LONE TREE WAY SUITE 200
Antioch, CA 94509
(925) 754-5254
✔ PECOS✔ Accepts Medicare1.9 mi

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

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 Adam Brooks MD Inc.'s NPI number?

The NPI number for Adam Brooks MD Inc. is 1073893863. It was assigned to this organization in the NPPES registry on August 24, 2011. The provider was formerly known as Summer S. Seibert MD Inc..

Where is Adam Brooks MD Inc. located?

Adam Brooks MD Inc. is located at 2350 Country Hills Drive Suite B, Antioch, CA 94509. The listed phone number is (925) 754-5254.

What is Adam Brooks MD Inc.'s specialty?

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

Is Adam Brooks MD Inc. enrolled in Medicare?

Yes. Adam Brooks MD Inc. is registered in the Medicare PECOS enrollment system.

When is Adam Brooks MD Inc.'s Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (California, Clinic/Group Practice) is due for revalidation by January 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 Adam Brooks MD Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Adam Brooks MD Inc., in General Surgery and Orthopedic Surgery. 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. Of these, 2 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Adam Brooks MD Inc. was last updated on February 15, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.