Leonard Walter Ostrowski III, DDS
- Part D claims, 2024
- 175
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2009
- Practice address
- 13721 Newport Ave, Tustin, CA 92780-4690
- Practice phone
- Call (714) 368-1400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Tustin Dental Office
Dental practice · Tustin, California
Find Leonard Ostrowski's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Leonard Walter Ostrowski III is a dentist in Saint John, Indiana
Leonard Ostrowski practices at Tustin Dental Office in Tustin, California.
Leonard Ostrowski's NPI, 1225276504, was assigned on January 26, 2009. Leonard Ostrowski holds California license 58004.
- NPI
- 1225276504NPI Registry (opens in a new tab)
- NPI enumeration date
- January 26, 2009
- NPI status
- Active
- Practice phone
- (714) 368-1400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Leonard Walter Ostrowski III practices in Tustin and Saint John
Leonard Ostrowski's primary practice is Tustin Dental Office, at 13721 Newport Ave, Tustin, CA 92780-4690. The practice phone is (714) 368-1400. The NPI Registry lists Leonard Ostrowski's practice address as 9660 Wicker Ave, Saint John, IN 46373.
- Tustin Dental OfficePrimary13721 Newport Ave, Tustin, CA 92780-4690Phone(714) 368-1400
- NPI Registry address9660 Wicker Ave, Saint John, IN 46373 · Lake County
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Leonard Walter Ostrowski III is affiliated with 1 site of care and 1 medical group
Leonard Ostrowski's primary practice is Tustin Dental Office in Tustin, California. Dmand AI also links Leonard Ostrowski to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Leonard Walter Ostrowski III's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Leonard Ostrowski practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Tustin Dental Office | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Leonard Walter Ostrowski III is one of 778 dentists in Indiana
Dentist is Leonard Ostrowski's primary specialty in the NPI Registry, under taxonomy code 122300000X. Leonard Ostrowski is licensed in California.
Specialties and state licenses
- Dentist, CaliforniaPrimary
Dentists near Leonard Ostrowski
Counts of dentists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Leonard Walter Ostrowski III's patients have a median age of 41
Across all payers, Dmand AI patient panel data puts Leonard Ostrowski's median patient age at 41, with 50% women.
Leonard Ostrowski's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 41
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Leonard Walter Ostrowski III wrote 175 Medicare Part D claims in 2024
In 2024, Leonard Ostrowski wrote 175 Medicare Part D claims for 92 patients. 99% of them were for generic drugs.
Leonard Ostrowski's Part D claims by kind of drug, 2024
- Generic174 claims99%
- Brand-name and other1 claims1%
Drug classes CMS tracks in Leonard Ostrowski's Part D claims, 2024
- Opioids23%40 of 175 claims
- Antibiotics39%68 of 175 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Sources for Leonard Walter Ostrowski III's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Leonard Walter Ostrowski III
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Leonard Walter Ostrowski III's NPI number?
Leonard Walter Ostrowski III's NPI number is 1225276504. It was assigned on January 26, 2009, and it is active in the NPI Registry.
What does Leonard Walter Ostrowski III specialize in?
Leonard Walter Ostrowski III is a dentist in Saint John, Indiana. The primary specialty in the NPI Registry is Dentist (taxonomy code 122300000X).
Where does Leonard Walter Ostrowski III practice?
Leonard Ostrowski practices at 13721 Newport Ave, Tustin, CA 92780-4690. Leonard Ostrowski also practices at 9660 Wicker Ave, Saint John, IN 46373. Leonard Ostrowski's primary practice is Tustin Dental Office in Tustin, California. Dmand AI also links Leonard Ostrowski to 1 medical group.
What is Leonard Walter Ostrowski III's office phone number?
The practice phone on file for Leonard Ostrowski is (714) 368-1400.
What is Leonard Walter Ostrowski III's medical license number?
Leonard Ostrowski holds California license 58004.
How long has Leonard Walter Ostrowski III been practicing?
Leonard Ostrowski's NPI was assigned in 2009.
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