DR. LEONARD WALTER OSTROWSKI III DDS
NPI 1225276504
Dentist in Tustin, CA

Q: What is Leonard Ostrowski's NPI number?

The NPI number for Leonard Ostrowski is 1225276504. It was assigned to this individual provider in the NPPES registry on January 26, 2009.

Q: What is Leonard Ostrowski's specialty?

The primary specialty registered for this NPI is Dentist with taxonomy code 122300000X.

Q: When was this NPI record last updated?

The NPPES record for Leonard Ostrowski was last updated on January 26, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.

Active since January 26, 2009PECOS Enrolled

13721 NEWPORT AVE., SUITE 1, TUSTIN, CA 92780(714) 368-1400 Get Directions Write a Review

NPPES record last updated: January 26, 2009. Verified against the NPPES registry weekly; last sync: August 02, 2026.

On this page

About Dr. Leonard Walter Ostrowski Iii Dds NPPES

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

DR. LEONARD WALTER OSTROWSKI III DDS (NPI 1225276504) is an individual dentist in Tustin, California, licensed in California (58004) and active in the NPI registry since January 2009. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1225276504

Entity TypeIndividualMale

Primary Taxonomy122300000X

Provider Legal NameDR. LEONARD WALTER OSTROWSKI IIICredential: DDS

Location Address13721 NEWPORT AVE., SUITE 1Tustin, CA 92780

Mailing Address145 Guilford CirValparaiso, IN 46385-8023 · (219) 921-3767

Phone(714) 368-1400

Sole ProprietorNo

Enumeration DateJanuary 26, 2009

✔ NPI 1225276504 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentistDental Providers

Taxonomy Code122300000X

License✔ Licensed in CA · 58004

Definition

A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.

13721 NEWPORT AVE., SUITE 1, Tustin, CA 92780

Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Leonard Walter Ostrowski Iii Dds 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92780 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$96.36 typical visit price

range $62.96 – $187.60

Typical copayment $24.09 (range $15.74 – $46.90)

Most-billed visit code 99203

Established Patient

$77.96 typical visit price

range $20.84 – $153.61

Typical copayment $19.49 (range $5.21 – $38.40)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Leonard Ostrowski's NPI number?

The NPI number for Leonard Ostrowski is 1225276504. It was assigned to this individual provider in the NPPES registry on January 26, 2009.

Where is Leonard Ostrowski located?

Leonard Ostrowski practices at 13721 Newport Ave., Suite 1, Tustin, CA 92780. The listed phone number is (714) 368-1400.

What is Leonard Ostrowski's specialty?

The primary specialty registered for this NPI is Dentist with taxonomy code 122300000X.

Is Leonard Ostrowski enrolled in Medicare?

Yes. Leonard Ostrowski is registered in the Medicare PECOS enrollment system.

What insurance does Leonard Ostrowski accept?

Health plans from Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas, Delta Dental of Indiana and Humana list Leonard Ostrowski as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Leonard Ostrowski was last updated on January 26, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.