Mary Ellen Ostrowski , NP
Nurse Practitioner • Conroe, TX
603 S Conroe Medical Dr Ste 100
Conroe, TX 773045395
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on June 3, 2008; this date does not establish years in practice.
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Published CMS data list 434 Original Medicare Part B services in 2021.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021. Published rows only; this is not a quality measure.
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Published Part B service records, 2021:
- 93016 — Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician: 170 service units.
- 99213 — Established patient outpatient office visit: 109 service units.
- 99223 — Initial hospital care with moderate level of medical decision making: 34 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2020 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2021). CPT notice
See all 8 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 2,885 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Methylprednisolone — 164 prescription fills, including refills.
- Alprazolam — 116 prescription fills, including refills.
- Levothyroxine Sodium — 106 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 85 records in the table · Guide: How to read Medicare Part D prescriber data
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More Part D prescriptions than 90% of clinicians listed under Nurse Practitioner in Texas (2024, 2,095 clinicians with data). Median for this group: 274. Middle half: 77 to 1,097.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 1,109 in 2017 to 434 in 2021.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017–2021.
Practice Location & Contact Primary Location
603 S Conroe Medical Dr Ste 100
Conroe, TX 773045395
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Nurse Practitioner: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $20,575 in 2021
The total amount Medicare approved for these services in 2021. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021.
Paid by Medicare
About $15,226 in 2021
The part of the Medicare-allowed amount that Medicare itself paid in 2021, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021.
30-day fills
5,922 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$135,024 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $2,055.54 across 95 records.
By nature of payment
- Food and Beverage: $1,987.59 across 94 records.
- Education: $67.95 across 1 record.
Reporting-company totals (3 largest of 27)
- ABBVIE INC.: $246.09 across 17 records.
- Salix Pharmaceuticals, a division of Bausch Health US, LLC: $201.28 across 7 records.
- Medtronic, Inc.: $169.65 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
NPI first issued
2008
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Mary Ostrowski has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Mary Ostrowski as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Conroe and Texas
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
More Part D prescriptions than 90% of clinicians listed under Nurse Practitioner in Texas (2024, 2,095 clinicians with data). Median for this group: 274. Middle half: 77 to 1,097.
Too few clinicians listed under Nurse Practitioner in Conroe have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 75% of clinicians listed under Nurse Practitioner in Texas (2024, 2,095 clinicians with data). Median for this group: $12,936. Middle half: $998 to $118,416.
Too few clinicians listed under Nurse Practitioner in Conroe have Medicare Part D data for 2024 to compare.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Mary Ostrowski are from 2021.
18 active clinicians are listed under Nurse Practitioner with a practice address in Conroe, TX (4,835 in Texas).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Conroe
11.1% of these 18 clinicians have the CMS telehealth indicator.
38.9% of these 18 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 61% from 1,109 in 2017 to 434 in 2021.
- 2017: 1,109
- 2018: 1,084
- 2019: 1,091
- 2020: 663
- 2021: 434
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Medicare-allowed amount
Medicare-allowed amount decreased 50% from $40,925 in 2017 to $20,575 in 2021.
- 2017: $40,925
- 2018: $39,796
- 2019: $50,542
- 2020: $31,256
- 2021: $20,575
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Paid by Medicare
Paid by Medicare decreased 52% from $31,821 in 2017 to $15,226 in 2021.
- 2017: $31,821
- 2018: $30,107
- 2019: $38,282
- 2020: $22,903
- 2021: $15,226
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 150% from 1,153 in 2020 to 2,885 in 2024.
- 2020: 1,153
- 2021: 1,177
- 2022: 1,429
- 2023: 1,935
- 2024: 2,885
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30-day fills
30-day fills increased 117% from 2,729 in 2020 to 5,922 in 2024.
- 2020: 2,729
- 2021: 2,960
- 2022: 2,694
- 2023: 3,596
- 2024: 5,922
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Part D drug cost
Part D drug cost increased 73% from $77,931 in 2020 to $135,024 in 2024.
- 2020: $77,931
- 2021: $101,622
- 2022: $49,912
- 2023: $67,628
- 2024: $135,024
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $889.83 in 2021 to $2,055.54 in 2025.
- 2021: $889.83
- 2022: $1,639.13
- 2023: $1,917.37
- 2024: $1,493.75
- 2025: $2,055.54
Sources: CMS Medicare Physician & Other Practitioners (2021), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): 95 records totaling $2,055.54.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
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SYMPLICITY G3 | General | $169.65 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
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XIFAXAN | General | $110.42 |
| Astellas Pharma US Inc |
Education
In-kind items and services
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— | General | $67.95 |
| HOLOGIC INC |
Food and Beverage
In-kind items and services
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APTIMA | General | $30.06 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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VRAYLAR | General | $29.88 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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VRAYLAR | General | $29.31 |
| Astellas Pharma US Inc |
Food and Beverage
In-kind items and services
|
Veozah | General | $28.20 |
| Lundbeck LLC |
Food and Beverage
Cash or cash equivalent
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REXULTI | General | $27.72 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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VRAYLAR | General | $27.15 |
| Kowa Pharmaceuticals America, Inc. |
Food and Beverage
In-kind items and services
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ZORYVE | General | $26.99 |
| Dexcom, Inc. |
Food and Beverage
In-kind items and services
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Dexcom G6 Transmitter | General | $26.22 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
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NURTEC ODT | General | $25.81 |
| Dexcom, Inc. |
Food and Beverage
In-kind items and services
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Dexcom G6 Transmitter | General | $25.80 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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VRAYLAR | General | $25.21 |
| Dexcom, Inc. |
Food and Beverage
In-kind items and services
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Dexcom G6 Transmitter | General | $24.83 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
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Wegovy | General | $24.67 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
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Wegovy | General | $24.40 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
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PAXLOVID | General | $24.32 |
| VERTEX PHARMACEUTICALS INCORPORATED |
Food and Beverage
In-kind items and services
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JOURNAVX | General | $24.15 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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VRAYLAR | General | $24.03 |
| Astellas Pharma US Inc |
Food and Beverage
In-kind items and services
|
Veozah | General | $23.44 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
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TRELEGY ELLIPTA | General | $23.28 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
Wegovy | General | $23.23 |
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
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Cologuard Collection Kit | General | $23.20 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
Ozempic | General | $23.03 |
(top 25 shown)
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2020 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2021; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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93016
Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician
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170 | 170 | $70.00 | $18.14 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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109 | 80 | $139.00 | $75.56 |
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99223
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
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34 | 34 | $393.00 | $165.58 |
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93294
Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days
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27 | 21 | $106.00 | $25.43 |
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93296
Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days
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27 | 21 | $98.00 | $24.66 |
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99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
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26 | 14 | $141.00 | $59.44 |
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93228
Electrocardiogram (ecg) up to 30 days continuous with review and report by health care professional
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24 | 24 | $79.00 | $21.62 |
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93000
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
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17 | 17 | $60.00 | $12.25 |
Source: CMS Part B by Provider and Service, 2021; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Methylprednisolone | Methylprednisolone | 164 | 984 | $1,117.86 | 134 |
| Alprazolam | Alprazolam | 116 | 4,605 | $575.84 | 43 |
| Levothyroxine Sodium | Levothyroxine Sodium | 106 | 9,180 | $814.33 | 46 |
| Gabapentin | Gabapentin | 97 | 6,604 | $1,350.47 | 54 |
| Tramadol Hcl | Tramadol Hcl | 87 | 2,145 | $394.61 | 38 |
| Meloxicam | Meloxicam | 78 | 5,400 | $376.28 | 34 |
| Azithromycin | Azithromycin | 77 | 386 | $359.00 | 69 |
| Atorvastatin Calcium | Atorvastatin Calcium | 75 | 6,760 | $452.93 | 34 |
| Amlodipine Besylate | Amlodipine Besylate | 74 | 6,160 | $526.24 | 33 |
| Losartan Potassium | Losartan Potassium | 67 | 5,684 | $698.16 | 30 |
| Lisinopril | Lisinopril | 66 | 5,730 | $696.88 | 27 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 64 | 5,390 | $1,750.67 | 33 |
| Hydrochlorothiazide | Hydrochlorothiazide | 55 | 4,760 | $159.58 | 23 |
| Temazepam | Temazepam | 55 | 2,940 | $1,387.09 | 27 |
| Mounjaro | Tirzepatide | 48 | 1,540 | $56,521.30 | 12 |
| Furosemide | Furosemide | 45 | 2,745 | $154.12 | 24 |
| Metoprolol Succinate | Metoprolol Succinate | 45 | 3,870 | $659.44 | 18 |
| Pantoprazole Sodium | Pantoprazole Sodium | 45 | 3,750 | $265.79 | 21 |
| Prednisone | Prednisone | 44 | 957 | $155.30 | 37 |
| Metformin Hcl | Metformin Hcl | 44 | 3,692 | $261.16 | 19 |
| Omeprazole | Omeprazole | 44 | 3,521 | $852.25 | 18 |
| Amoxicillin | Amoxicillin | 40 | 233 | $93.35 | 38 |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 38 | 246 | $209.64 | 37 |
| Simvastatin | Simvastatin | 37 | 3,290 | $367.84 | 16 |
| Zolpidem Tartrate | Zolpidem Tartrate | 35 | 2,400 | $450.01 | 17 |
(top 25 shown)
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2024-08-11NUCC Taxonomy Code: 363L00000X
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
NUCC Taxonomy Code: 363LF0000X
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20081004000041
TX
4486722428
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Family Medicine
Physician Assistant (Certified)
Family Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 603 S CONROE MEDICAL DR STE 100, CONROE, TX 773045395 (Tel: 9367609900)
Registered at 603 S CONROE MEDICAL DR STE 100, CONROE, TX 773045395 (Tel: 9367609900)
Nurse Practitioner (license number reported to NPPES: TX AP117091)
NPI status registered as active in NPPES database
Registered at 508 MEDICAL CENTER BLVD, SUITE 200, CONROE, TX 773042953 (Tel: 9367604600)
Registered at 508 MEDICAL CENTER BLVD, SUITE 200, CONROE, TX 773042953 (Tel: 9367604600)
Recorded as MARY OSTROWSKI, N.P.
Nurse Practitioner (license number reported to NPPES: TX 638157)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Nurse Practitioners in Conroe
- Michelle Norris, APN
- Brenda Ladkani, MSN, RN, APRN, FNP-C
- Jessica Capparelli, FNP
- Christopher Jones, NP
- Karri Sykora, FNP-C
- Carrye Boris, NP
Mailing Address
603 S Conroe Medical Dr Ste 100
Conroe, TX 773045395
Phone: 9367609900