Marilyn Roy , PA-C
Physician Assistant • Austin, TX
5929 Balcones Dr Ste 200
Austin, TX 787314280
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 October 4, 2016; this date does not establish years in practice.
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Published CMS data list 125 Original Medicare Part B services in 2018.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2018. Published rows only; this is not a quality measure.
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Published Part B service records, 2018:
- 99214 — Established patient outpatient office visit: 61 service units.
- 71046 — X-ray of chest, 2 views: 19 service units.
- 99203 — New patient outpatient office visit: 19 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2018. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2017 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2018). CPT notice
See all 5 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 227 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:
- Epinephrine — 53 prescription fills, including refills.
- Ipratropium Bromide — 47 prescription fills, including refills.
- Azelastine Hcl — 35 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 9 records in the table · Guide: How to read Medicare Part D prescriber data
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More Part D prescriptions than 60% of clinicians listed under Physician Assistant in Austin, TX (2024, 281 clinicians with data). Median for this group: 126. Middle half: 44 to 481.
Close to the middle for Part D prescriptions among clinicians listed under Physician Assistant in Texas (2024, 4,882 clinicians with data). Median for this group: 261. Middle half: 73 to 938.
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 185 in 2017 to 125 in 2018.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017–2018.
Practice Location & Contact Primary Location
5929 Balcones Dr Ste 200
Austin, TX 787314280
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Sinus And Allergy Specialists Of Texas. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
Midwestern University College Of Dental Medicine, Glendale
2016
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $7,602 in 2018
The total amount Medicare approved for these services in 2018. 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, 2018.
Paid by Medicare
About $4,610 in 2018
The part of the Medicare-allowed amount that Medicare itself paid in 2018, 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, 2018.
30-day fills
289 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
$142,887 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: $1,057.33 across 47 records.
By nature of payment
- Food and Beverage: $967.27 across 46 records.
- Education: $90.06 across 1 record.
Reporting-company totals (3 largest of 9)
- ARS Pharmaceuticals Operations, Inc.: $254.52 across 7 records.
- Regeneron Pharmaceuticals, Inc.: $199.24 across 10 records.
- GlaxoSmithKline, LLC.: $181.44 across 12 records.
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).
Years since graduation
10 years (graduated 2016)
CMS Doctors and Clinicians data list 2016 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2016
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.
May accept Medicare assignment
CMS data show this clinician may accept Medicare assignment. Clinicians who do not always accept assignment can decide case by case.
Ask the office before your visit. If a clinician does not accept assignment for a service, they can charge up to 15% more than the Medicare-approved amount, and you may be asked to pay the full amount at the visit.
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)
Marilyn Roy 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 Marilyn Roy 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 Austin and Texas
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
More Part D prescriptions than 60% of clinicians listed under Physician Assistant in Austin, TX (2024, 281 clinicians with data). Median for this group: 126. Middle half: 44 to 481.
Close to the middle for clinicians listed under Physician Assistant in Texas (2024, 4,882 clinicians with data). Median for this group: 261. Middle half: 73 to 938.
Part D drug cost
A higher Part D drug cost than 90% of clinicians listed under Physician Assistant in Austin, TX (2024, 281 clinicians with data). Median for this group: $2,243. Middle half: $383 to $31,479.
A higher Part D drug cost than 75% of clinicians listed under Physician Assistant in Texas (2024, 4,882 clinicians with data). Median for this group: $7,999. Middle half: $749 to $103,240.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Marilyn Roy are from 2018.
607 active clinicians are listed under Physician Assistant with a practice address in Austin, TX (11,008 in Texas).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Austin
15.7% of these 607 clinicians have the CMS telehealth indicator.
47.6% of these 607 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 32% from 185 in 2017 to 125 in 2018.
- 2017: 185
- 2018: 125
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Medicare-allowed amount
Medicare-allowed amount decreased 38% from $12,262 in 2017 to $7,602 in 2018.
- 2017: $12,262
- 2018: $7,602
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Paid by Medicare
Paid by Medicare decreased 44% from $8,189 in 2017 to $4,610 in 2018.
- 2017: $8,189
- 2018: $4,610
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 54% from 495 in 2020 to 227 in 2024.
- 2020: 495
- 2021: 419
- 2022: 453
- 2023: 214
- 2024: 227
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30-day fills
30-day fills decreased 59% from 711 in 2020 to 289 in 2024.
- 2020: 711
- 2021: 686
- 2022: 727
- 2023: 329
- 2024: 289
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Part D drug cost
Part D drug cost increased 108% from $68,772 in 2020 to $142,887 in 2024.
- 2020: $68,772
- 2021: $88,462
- 2022: $104,171
- 2023: $105,900
- 2024: $142,887
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $327.72 in 2021 to $1,057.33 in 2025.
- 2021: $327.72
- 2022: $553.58
- 2023: $319.29
- 2024: $743.86
- 2025: $1,057.33
Sources: CMS Medicare Physician & Other Practitioners (2018), 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): 47 records totaling $1,057.33.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| ARS Pharmaceuticals Operations, Inc. |
Food and Beverage
In-kind items and services
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NEFFY | General | $110.82 |
| Regeneron Pharmaceuticals, Inc. |
Education
In-kind items and services
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DUPIXENT | General | $90.06 |
| Inspire Medical Systems, Inc. |
Food and Beverage
In-kind items and services
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INSPIRE | General | $32.39 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
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Rhapsido | General | $29.04 |
| ARS Pharmaceuticals Operations, Inc. |
Food and Beverage
In-kind items and services
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NEFFY | General | $29.04 |
| Optinose US, Inc. |
Food and Beverage
In-kind items and services
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Xhance | General | $27.81 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
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DUPIXENT | General | $27.55 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
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NUCALA | General | $26.17 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
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DUPIXENT | General | $26.06 |
| Regeneron Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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DUPIXENT | General | $25.93 |
| Regeneron Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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DUPIXENT | General | $25.77 |
| ARS Pharmaceuticals Operations, Inc. |
Food and Beverage
In-kind items and services
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NEFFY | General | $25.70 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
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TRELEGY ELLIPTA | General | $24.27 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
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— | General | $23.94 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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— | General | $23.90 |
| Organon LLC |
Food and Beverage
In-kind items and services
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— | General | $23.36 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
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DUPIXENT | General | $23.35 |
| ARS Pharmaceuticals Operations, Inc. |
Food and Beverage
In-kind items and services
|
NEFFY | General | $22.89 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
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NUCALA | General | $22.71 |
| Optinose US, Inc. |
Food and Beverage
In-kind items and services
|
Xhance | General | $22.66 |
| ARS Pharmaceuticals Operations, Inc. |
Food and Beverage
In-kind items and services
|
NEFFY | General | $22.62 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
|
TEZSPIRE | General | $22.59 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
|
— | General | $22.56 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
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Rhapsido | General | $22.13 |
| ARS Pharmaceuticals Operations, Inc. |
Food and Beverage
In-kind items and services
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NEFFY | General | $21.89 |
(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 2016–2017 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, 2017–2018; 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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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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61 | 61 | $170.00 | $85.45 |
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71046
X-ray of chest, 2 views
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19 | 19 | $100.00 | $24.51 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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19 | 19 | $177.37 | $87.29 |
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96372
Injection of drug or substance under skin or into muscle
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14 | 12 | $49.00 | $16.60 |
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81003
Automated urinalysis test
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12 | 12 | $20.00 | $2.71 |
Source: CMS Part B by Provider and Service, 2018; 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 |
|---|---|---|---|---|---|
| Epinephrine | Epinephrine | 53 | 900 | $9,171.58 | 51 |
| Ipratropium Bromide | Ipratropium Bromide | 47 | 1,600 | $1,055.38 | 20 |
| Azelastine Hcl | Azelastine Hcl | 35 | 1,345 | $1,142.08 | 21 |
| Dupixent Pen | Dupilumab | 21 | 588 | $89,288.89 | — |
| Fluticasone Propionate | Fluticasone Propionate | 20 | 1,068 | $276.63 | — |
| Prednisone | Prednisone | 15 | 158 | $28.10 | 14 |
| Montelukast Sodium | Montelukast Sodium | 12 | 960 | $81.63 | — |
| Nucala | Mepolizumab | 12 | 336 | $40,656.15 | — |
| Fluticasone-Salmeterol | Fluticasone Propion/Salmeterol | 12 | 360 | $1,186.91 | — |
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: 2024-12-19NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20230703001244
TX
7618255795
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Sinus And Allergy Specialists Of Texas
115 N Loop 1604 E, San Antonio, TX 782321399
Phone: 5125501800
Sinus And Allergy Specialists Of Texas
401 W Slaughter Ln, Austin, TX 787481774
Phone: 5125501800
Sinus And Allergy Specialists Of Texas
5656 Bee Caves Rd, West Lake Hills, TX 787465281
Phone: 5122225856
Sinus And Allergy Specialists Of Texas
7125 New Sanger Ave, Waco, TX 767124054
Phone: 5125501800
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Allergy & Immunology
Doctor of Medicine (M.D.)
Physician Assistant
Allergy & Immunology
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 5929 BALCONES DR STE 200, AUSTIN, TX 787314280 (Tel: 5122225856)
Registered at 11500 CATALONIA DR, AUSTIN, TX 787594913
Registered at 1006 E GUADALUPE RD, TEMPE, AZ 85283 (Tel: 4808384296)
NPI status registered as active in NPPES database
Registered at 2550 N THUNDERBIRD CIR, SUITE 303, MESA, AZ 852151214 (Tel: 4802017097)
Registered at 1105 W PORTLAND ST, PHOENIX, AZ 850072128
Recorded as MARILYN ROY, PA-C
Physician Assistant (license number reported to NPPES: AZ 6457)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Austin
- John Paul Thevenot, PA-C
- Amanda Ammerman, PA-C
- Carley Lebioda, PA
- Mercedes Rodriguez, PA-C
- Shelby Wall, PA-C
- Cassie Dean, PA
Mailing Address
11500 Catalonia Dr
Austin, TX 787594913