Tammy L. Ostroski, APNP
Family Nurse Practitioner · Mesa, AZ
Tammy L. Ostroski, APNP is a family nurse practitioner with a practice address in Mesa, Arizona, and NPI 1326230673, issued on Aug 10, 2007. Check the license (Arizona AP3974, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Tammy L. Ostroski
- Credential
- APNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- AP3974 AZ
3037 WI
Self-reported in NPPES; status is on the state search - Practice location
- 7153 E Thistle Ave, Mesa, AZ 85212
- Phone
- (480) 727-1500
- Enumerated
- Aug 10, 2007
- Record last updated
- Nov 13, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicaid ID
- 36039200 WI
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 5,933 in Arizona → Look up another NPI →
Verify Tammy L. Ostroski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Arizona board licenses this profession
Search for license AP3974Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family nurse practitioner in 2024
13 Medicare Part D claims, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Tammy L. Ostroski among 5,933 family nurse practitioner records in Arizona
Tammy L. Ostroski, APNP is one of 5,933 family nurse practitioner records with a practice address in Arizona. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 9% of them.
- NPI issued2007 · 9% of these records are older, 88% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2012 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
391 family nurse practitioner records list a practice address in Mesa
They are 391 of the 9,151 NPPES records with a practice address in Mesa, and 5,933 family nurse practitioner records in Arizona.
All 5,933 in Arizona → Every provider in Mesa → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Elena CarrettaMesa, AZ 852121326412388
- Maria Emilaine De Castro, FNP-CMesa, AZ 852121164852802
- Barbara Dupaul, FNPMesa, AZ 852121083693865
- Michelle Gomez, FNPMesa, AZ 852121710439641
- Brent Kelsch, FNPMesa, AZ 852121891187340
- Kelley Lejcar, FNP-CMesa, AZ 852121871240689
- Matthew Miller, FNPMesa, AZ 852121053926410
- Vincent Noriega, FNPMesa, AZ 852121831469733
Common questions
What is Tammy L. Ostroski, APNP's NPI number?
Tammy L. Ostroski, APNP's National Provider Identifier (NPI) is 1326230673, issued on Aug 10, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Tammy L. Ostroski, APNP located?
The NPPES record lists a practice address at 7153 E Thistle Ave, Mesa, AZ, 85212. Phone: (480) 727-1500. Providers update this record themselves, so call before visiting.
How can I verify Tammy L. Ostroski, APNP's license?
NPPES lists Arizona license number AP3974, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.
How much does Tammy L. Ostroski, APNP prescribe under Medicare Part D?
In 2024, Tammy L. Ostroski, APNP had 13 Medicare Part D claims; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.