Michael Byrum , AA
Anesthesiologist Assistant • Saint Louis, MO
615 S New Ballas Rd, Department Of Anesthesiology
Saint Louis, MO 631418221
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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Michael Byrum is listed in NPPES under Anesthesiologist Assistant.
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NPI assigned on May 12, 2010; this date does not establish years in practice.
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Published CMS data list 16 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:
- 00731 — Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope: 16 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 the full table · Guide: How to read Medicare Part B data
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Fewer Medicare Part B services than 70% of clinicians listed under Anesthesiologist Assistant in Saint Louis, MO (2024, 85 clinicians with data). Median for this group: 29. Middle half: 16 to 45.
Fewer Medicare Part B services than 75% of clinicians listed under Anesthesiologist Assistant in Missouri (2024, 158 clinicians with data). Median for this group: 32. Middle half: 16 to 54.
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 52 in 2018 to 16 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2018–2024.
Practice Location & Contact Primary Location
615 S New Ballas Rd
Department Of Anesthesiology
Saint Louis, MO 631418221
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 2 distinct group names: Ssm Health Slu Hospital Anesthesia Physician Billing Llc; Western Anesthesiology Associates Inc. 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
2010
What Public CMS Data Show
Anesthesiologist Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
106 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 $1,289 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 $1,027 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.
Open Payments general payments, program year 2025
All general payments: $154.26 across 3 records.
By nature of payment
- Food and Beverage: $154.26 across 3 records.
Reporting-company totals
- ABIOMED: $114.01 across 1 record.
- Merck Sharp & Dohme LLC: $40.25 across 2 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
16 years (graduated 2010)
CMS Doctors and Clinicians data list 2010 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
2010
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)
Michael Byrum 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.
Compared with the same specialty in Saint Louis and Missouri
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 70% of clinicians listed under Anesthesiologist Assistant in Saint Louis, MO (2024, 85 clinicians with data). Median for this group: 29. Middle half: 16 to 45.
Fewer Medicare Part B services than 75% of clinicians listed under Anesthesiologist Assistant in Missouri (2024, 158 clinicians with data). Median for this group: 32. Middle half: 16 to 54.
Medicare-allowed amount
A lower Medicare-allowed amount than 70% of clinicians listed under Anesthesiologist Assistant in Saint Louis, MO (2024, 85 clinicians with data). Median for this group: $2,623. Middle half: $1,222 to $4,288.
A lower Medicare-allowed amount than 75% of clinicians listed under Anesthesiologist Assistant in Missouri (2024, 158 clinicians with data). Median for this group: $2,796. Middle half: $1,642 to $4,905.
Paid by Medicare
A lower Medicare payment amount than 70% of clinicians listed under Anesthesiologist Assistant in Saint Louis, MO (2024, 85 clinicians with data). Median for this group: $2,090. Middle half: $974 to $3,552.
A lower Medicare payment amount than 75% of clinicians listed under Anesthesiologist Assistant in Missouri (2024, 158 clinicians with data). Median for this group: $2,239. Middle half: $1,291 to $3,906.
174 active clinicians are listed under Anesthesiologist Assistant with a practice address in Saint Louis, MO (311 in Missouri).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Saint Louis
0% of these 174 clinicians have the CMS telehealth indicator.
86.2% of these 174 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 69% from 52 in 2018 to 16 in 2024.
- 2018: 52
- 2019: 43
- 2020: 13
- 2022: 35
- 2024: 16
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Medicare-allowed amount
Medicare-allowed amount decreased 84% from $8,173 in 2018 to $1,289 in 2024.
- 2018: $8,173
- 2019: $5,894
- 2020: $2,885
- 2022: $2,873
- 2024: $1,289
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Paid by Medicare
Paid by Medicare decreased 84% from $6,512 in 2018 to $1,027 in 2024.
- 2018: $6,512
- 2019: $4,706
- 2020: $2,308
- 2022: $2,239
- 2024: $1,027
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $16.75 in 2022 to $154.26 in 2025.
- 2022: $16.75
- 2023: $21.63
- 2024: $47.36
- 2025: $154.26
Sources: CMS Medicare Physician & Other Practitioners (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 $154.26.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| ABIOMED |
Food and Beverage
In-kind items and services
|
— | General | $114.01 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
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— | General | $21.43 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
|
BRIDION | General | $18.82 |
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 2016–2023 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, 2017–2024; 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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00731
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope
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16 | 16 | $806.84 | $80.59 |
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.
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 367H00000X
An individual certified by the state to perform anesthesia services under the direct supervision of an anesthesiologist. Anesthesiologist Assistants are required to have a bachelor's degree with a premed curriculum prior to entering a two-year anesthesiology assistant program, which is focused upon the delivery and maintenance of anesthesia care as well as advanced patient monitoring techniques. An Anesthesiologist Assistant must work as a member of the anesthesia care team under the direction of a qualified Anesthesiologist.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - ANESTHESIOLOGY ASSISTANT
I20110204000852
MO
2860672086
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 Slu Hospital Anesthesia Physician Billing Llc
1225 S Grand Blvd, Saint Louis, MO 631041016
Phone: 3142578000
Ssm Health Slu Hospital Anesthesia Physician Billing Llc
1201 S Grand Blvd, Saint Louis, MO 631041016
Phone: 3142578000
Western Anesthesiology Associates Inc
615 S New Ballas Rd, Saint Louis, MO 631418221
Phone: 3142514687
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner - Adult Health
Nurse Practitioner
Anesthesiology
Doctor of Osteopathic Medicine (D.O.)
Anesthesiology
Doctor of Osteopathic Medicine (D.O.)
Anesthesiologist Assistant
Anesthesiology
Doctor of Medicine (M.D.)
Nurse Anesthetist, Certified Registered
Certified Registered Nurse Anesthetist
Career & Practice History
NPI enumerated May 12, 2010.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Anesthesiologist Assistants in Saint Louis
- Joseph Doud, AA-C
- Hannah Bottin, CAA
- Daniel Stelzer, AA-C
- Hannah Sneyd, AA-C
- Maria Jones, C-AA
- Lauren Gonzalez, CAA
Mailing Address
339 Consort Dr
Ballwin, MO 630114439
Phone: 6363869224