Mary Ellen Ostrowski, N.P.
Nurse Practitioner · Conroe, TX
Mary Ellen Ostrowski, N.P. is a nurse practitioner with a practice address in Conroe, Texas, and NPI 1497914709, issued on Jun 3, 2008. Check the license (Texas 638157, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Ellen Ostrowski
- Credential
- N.P.
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License numbers
- 638157 TX
AP117091 TX
Self-reported in NPPES; status is on the state search - Practice location
- 603 S Conroe Medical Dr Ste 100, Conroe, TX 77304
- Phone
- (936) 760-9900
- Enumerated
- Jun 3, 2008
- Record last updated
- Aug 11, 2024
- Fax
- (936) 760-9926
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 4,825 in Texas → Look up another NPI →
Verify Mary Ellen Ostrowski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license 638157Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.2 times the Medicare Part D claims of the average nurse practitioner in 2024
3,565 Medicare Part D claims for 568 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 111 claims were for opioids.
Most prescribed
- Methylprednisolone164 claims
- Alprazolam116 claims
- Levothyroxine Sodium106 claims
- Gabapentin97 claims
- Tramadol Hcl87 claims
- Meloxicam78 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.
Industry payments in 2024: $1,493.75
88 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Mary Ellen Ostrowski among 4,825 nurse practitioner records in Texas
Mary Ellen Ostrowski, N.P. is one of 4,825 nurse practitioner records with a practice address in Texas. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 17% of them.
- NPI issued2008 · 17% of these records are older, 80% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 54% of these records are
- Record last updated2024 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nurse Practitioner providers in Texas
There are 4,825 nurse practitioner records in Texas.
All 4,825 in Texas → Every provider in Conroe → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Carrye Boris, NPConroe, TX 773041063870269
- Stacy Caldwell, FNP-BCConroe, TX 773041386565596
- Jessica Capparelli, FNPConroe, TX 773041568831287
- Alanna Gale, FNP-CConroe, TX 773041740642107
- Christopher Jones, NPConroe, TX 773041760498463
- Michelle Norris, APNConroe, TX 773041447919410
- Megan Slomka, APRN, FNP-CConroe, TX 773041982251757
- Karri Sykora, FNP CConroe, TX 773041750491742
Common questions
What is Mary Ellen Ostrowski, N.P.'s NPI number?
Mary Ellen Ostrowski, N.P.'s National Provider Identifier (NPI) is 1497914709, issued on Jun 3, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Mary Ellen Ostrowski, N.P. located?
The NPPES record lists a practice address at 603 S Conroe Medical Dr Ste 100, Conroe, TX, 77304. Phone: (936) 760-9900. Providers update this record themselves, so call before visiting.
How can I verify Mary Ellen Ostrowski, N.P.'s license?
NPPES lists Texas license number 638157, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does Mary Ellen Ostrowski, N.P. prescribe under Medicare Part D?
In 2024, Mary Ellen Ostrowski, N.P. had 3,565 Medicare Part D claims for 568 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.