DR. NESTOR D KARAS D.D.S., M.D.
NPI 1437422854
Dentist - Oral and Maxillofacial Surgery in Walnut Creek, CA

Active since February 15, 2012Opted out of Medicare · through Feb 6, 2027
1800 SAN MIGUEL DR, WALNUT CREEK, CA 94596(925) 933-6190(925) 945-7320 Get Directions Write a Review

NPPES record last updated: February 15, 2012. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Dr. Nestor D Karas D.d.s., M.d. NPPES

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

DR. NESTOR D KARAS D.D.S., M.D. (NPI 1437422854) is an individual oral and maxillofacial surgery provider in Walnut Creek, California, licensed in California (35742) and active in the NPI registry since February 2012. He has opted out of Medicare through February 6, 2027.

NPPES Registry Identity

NPI1437422854
Entity TypeIndividualMale
Primary Taxonomy1223S0112X
Provider Legal NameDR. NESTOR D KARASCredential: D.D.S., M.D.
Location Address1800 SAN MIGUEL DRWalnut Creek, CA 94596-8606
Mailing Address1800 San Miguel DrWalnut Creek, CA 94596-8606 · (925) 933-6190 · Fax (925) 945-7320
Fax(925) 945-7320
Sole ProprietorNo
Enumeration DateFebruary 15, 2012
NPI 1437422854 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyDentist · Oral and Maxillofacial SurgeryDental Providers
Taxonomy Code1223S0112X
License Licensed in CA · 35742
Definition

An oral and maxillofacial surgery dentist specialized in the diagnosis, surgical and adjunctive treatment of diseases, injuries and defects involving both the functional and esthetic aspects of the hard and soft tissues of the oral and maxillofacial region.

1800 SAN MIGUEL DR, Walnut Creek, CA 94596

Other Identifiers 1

Medicare UPIN00A605440CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

Opted out of Medicare

Dr. Nestor D Karas D.d.s., M.d. 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 February 6, 2025 through February 6, 2027.

Opt-Out Effective DateFebruary 6, 2025
Opt-Out In Effect ThroughFebruary 6, 2027Opt-out affidavits renew automatically every two years unless cancelled

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Clinic/Center (Oral and Maxillofacial Surgery)
1800 SAN MIGUEL DR
WALNUT CREEK, CA 94596
Dentist
1800 SAN MIGUEL DR
WALNUT CREEK, CA 94596
Dentist
1800 SAN MIGUEL DR
WALNUT CREEK, CA 94596
Dentist (Dentist Anesthesiologist)
1800 SAN MIGUEL DR
WALNUT CREEK, CA 94596

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 Nestor Karas's NPI number?

The NPI number for Nestor Karas is 1437422854. It was assigned to this individual provider in the NPPES registry on February 15, 2012.

Where is Nestor Karas located?

Nestor Karas practices at 1800 San Miguel Dr, Walnut Creek, CA 94596. The listed phone number is (925) 933-6190.

What is Nestor Karas's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Oral and Maxillofacial Surgery, with taxonomy code 1223S0112X.

Is Nestor Karas enrolled in Medicare?

No. Nestor Karas has opted out of Medicare through February 6, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for Nestor Karas was last updated on February 15, 2012. NPI Profile syncs with the weekly NPPES data releases published by CMS.