Allyson Leigh Roser , PA
Physician Assistant • Belleville, IL
4600 Memorial Dr Ste W3
Belleville, IL 622265359
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 February 7, 2018; this date does not establish years in practice.
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Published CMS data list 442 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- J3301 — Injection, triamcinolone acetonide, not otherwise specified, 10 mg: 241 service units.
- 20610 — Aspiration and/or injection of fluid from large joint: 56 service units.
- 99213 — Established patient outpatient office visit: 37 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 7 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 388 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:
- Diclofenac Sodium — 133 prescription fills, including refills.
- Gabapentin — 104 prescription fills, including refills.
- Methocarbamol — 53 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 8 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 60% of clinicians listed under Physician Assistant in Belleville, IL (2024, 31 clinicians with data). Median for this group: 327. Middle half: 172 to 546.
More Medicare Part B services than 70% of clinicians listed under Physician Assistant in Illinois (2024, 2,422 clinicians with data). Median for this group: 212. Middle half: 76 to 548.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 483 in 2020 to 442 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
4600 Memorial Dr Ste W3
Belleville, IL 622265359
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: Ssm Health Care Group. 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
2017
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
133 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $13,641 in 2024
The total amount Medicare approved for these services in 2024. 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, 2024.
Paid by Medicare
About $9,423 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, 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, 2024.
30-day fills
407 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
$6,039 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: $2,437.96 across 2 records.
By nature of payment
- Education: $2,357.12 across 1 record.
- Food and Beverage: $80.84 across 1 record.
Reporting-company totals
- ACUMED LLC: $2,357.12 across 1 record.
- Medical Device Business Services, Inc.: $80.84 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).
Years since graduation
9 years (graduated 2017)
CMS Doctors and Clinicians data list 2017 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
2018
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.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
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)
Allyson Roser 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 Allyson Roser 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 Belleville and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 60% of clinicians listed under Physician Assistant in Belleville, IL (2024, 31 clinicians with data). Median for this group: 327. Middle half: 172 to 546.
More Medicare Part B services than 70% of clinicians listed under Physician Assistant in Illinois (2024, 2,422 clinicians with data). Median for this group: 212. Middle half: 76 to 548.
Medicare-allowed amount
A lower Medicare-allowed amount than 75% of clinicians listed under Physician Assistant in Belleville, IL (2024, 31 clinicians with data). Median for this group: $27,028. Middle half: $14,388 to $39,077.
Close to the middle for clinicians listed under Physician Assistant in Illinois (2024, 2,422 clinicians with data). Median for this group: $16,580. Middle half: $6,650 to $35,717.
Paid by Medicare
A lower Medicare payment amount than 75% of clinicians listed under Physician Assistant in Belleville, IL (2024, 31 clinicians with data). Median for this group: $19,881. Middle half: $10,455 to $29,420.
Close to the middle for clinicians listed under Physician Assistant in Illinois (2024, 2,422 clinicians with data). Median for this group: $12,415. Middle half: $4,894 to $26,472.
Medicare Part D prescriptions
More Part D prescriptions than 60% of clinicians listed under Physician Assistant in Belleville, IL (2024, 29 clinicians with data). Median for this group: 283. Middle half: 121 to 427.
More Part D prescriptions than 65% of clinicians listed under Physician Assistant in Illinois (2024, 2,668 clinicians with data). Median for this group: 203. Middle half: 67 to 595.
Part D drug cost
Close to the middle for clinicians listed under Physician Assistant in Belleville, IL (2024, 29 clinicians with data). Median for this group: $3,245. Middle half: $657 to $39,820.
Close to the middle for clinicians listed under Physician Assistant in Illinois (2024, 2,668 clinicians with data). Median for this group: $3,018. Middle half: $535 to $48,132.
42 active clinicians are listed under Physician Assistant with a practice address in Belleville, IL (4,929 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Belleville
9.5% of these 42 clinicians have the CMS telehealth indicator.
54.8% of these 42 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 varied from year to year: 483 in 2020 and 442 in 2024.
- 2020: 483
- 2021: 601
- 2022: 87
- 2023: 310
- 2024: 442
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Medicare-allowed amount
Medicare-allowed amount decreased 67% from $41,930 in 2020 to $13,641 in 2024.
- 2020: $41,930
- 2021: $51,310
- 2022: $7,311
- 2023: $14,157
- 2024: $13,641
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Paid by Medicare
Paid by Medicare decreased 72% from $33,470 in 2020 to $9,423 in 2024.
- 2020: $33,470
- 2021: $40,865
- 2022: $5,814
- 2023: $9,978
- 2024: $9,423
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 978% from 36 in 2020 to 388 in 2024.
- 2020: 36
- 2021: 68
- 2022: 34
- 2023: 273
- 2024: 388
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30-day fills
30-day fills increased 1002% from 37 in 2020 to 407 in 2024.
- 2020: 37
- 2021: 71
- 2022: 34
- 2023: 286
- 2024: 407
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Part D drug cost
Part D drug cost went from $679 in 2020 to $6,039 in 2024.
- 2020: $679
- 2021: $865
- 2022: $537
- 2023: $5,850
- 2024: $6,039
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $221.55 in 2022 to $2,437.96 in 2025.
- 2022: $221.55
- 2023: $643.34
- 2025: $2,437.96
Sources: CMS Medicare Physician & Other Practitioners (2024), 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): fewer than 11 records totaling $2,437.96.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| ACUMED LLC |
Education
In-kind items and services
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INnate Implant | General | $2,357.12 |
| Medical Device Business Services, Inc. |
Food and Beverage
In-kind items and services
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— | General | $80.84 |
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 2018–2023 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, 2019–2024; 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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J3301
Injection, triamcinolone acetonide, not otherwise specified, 10 mg
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241 | 20 | $40.00 | $0.98 |
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20610
Aspiration and/or injection of fluid from large joint
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56 | 37 | $487.45 | $44.72 |
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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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37 | 28 | $190.00 | $54.42 |
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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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37 | 33 | $295.00 | $81.15 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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27 | 27 | $363.00 | $108.43 |
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20610
Aspiration and/or injection of fluid from large joint
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23 | 19 | $483.52 | $66.28 |
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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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21 | 21 | $239.00 | $68.21 |
Source: CMS Part B by Provider and Service, 2024; 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 |
|---|---|---|---|---|---|
| Diclofenac Sodium | Diclofenac Sodium | 133 | 1,869 | $3,257.70 | 49 |
| Gabapentin | Gabapentin | 104 | 2,959 | $1,278.58 | 31 |
| Methocarbamol | Methocarbamol | 53 | 1,166 | $722.17 | 23 |
| Meloxicam | Meloxicam | 34 | 1,139 | $27.26 | 12 |
| Tizanidine Hcl | Tizanidine Hcl | 23 | 685 | $379.92 | — |
| Methylprednisolone | Methylprednisolone | 17 | 102 | $118.57 | 15 |
| Naproxen | Naproxen | 13 | 390 | $142.62 | — |
| Pregabalin | Pregabalin | 11 | 330 | $111.75 | — |
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: 2021-04-07NUCC 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.
NUCC Taxonomy Code: 363AM0700X
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20220830002581
MO
1153667415
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
Ssm Health Care Group
10101 Woodfield Ln, Saint Louis, MO 631322946
Phone: 6082804647
Ssm Health Care Group
1011 Bowles Ave, Fenton, MO 630262387
Ssm Health Care Group
1225 S Grand Blvd, Saint Louis, MO 631041016
Ssm Health Care Group
1031 Bellevue Ave, Saint Louis, MO 631171818
Phone: 3149777455
Ssm Health Care Group
1201 S Grand Blvd, Saint Louis, MO 631041016
Phone: 3146172000
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physician Assistant
Physician Assistant (Certified)
Clinical Nurse Specialist
Family Nurse Practitioner (Certified)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Recorded as ALLYSON ROSER, PA
Physician Assistant (license number reported to NPPES: IL 085.006541)
NPI status registered as active in NPPES database
Registered at 4600 MEMORIAL DR STE W3, BELLEVILLE, IL 622265359 (Tel: 6182228900)
Registered at 4600 MEMORIAL DR STE W3, BELLEVILLE, IL 622265359 (Tel: 6182228900)
Recorded as ALLYSON PELUDAT, PA
Physician Assistant (license number reported to NPPES: MA 1150728)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Belleville
- Peyton Bowe, PA-C
- Amy Zeller, PA-C
- Cynthia Emily, PA
- Rachel Rademacher, PA-C
- Irina Polansky, PA-C
- Jamie Garofalo, PA-C
Mailing Address
4600 Memorial Dr Ste W3
Belleville, IL 622265359
Phone: 6182228900