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Brett P Siemon

Anesthesiologist Assistant • Columbus, OH

Active NPI 1073132437 Individual Practitioner Male Practitioner Accepts Medicare assignment
Practice location in NPPES

2121 Kenny Rd
Columbus, OH 432103100

Call 6142938487 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

2121 Kenny Rd

Columbus, OH 432103100

Telephone 6142938487
Fax 6142938153
Organization at the Same NPPES Address or Phone
Osu Observation Medicine Svs Dental Facility NPI 1386391456

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

NPPES lists 1 additional practice-address record in Milwaukee, WI. See the list

Source: CMS NPPES NPI Registry, practice location records; release date unavailable.

CMS Doctors and Clinicians lists 2 distinct group names: Consultant Anesthesiologists Inc.; Osu Observation Medicine, Llc. 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

Graduation Year

2020

Medicare patients

174 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.

Medicare-allowed amount

About $21,085 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.

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 $16,656 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

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.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $15.20 in 2025

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2025.

Guide: How to read an Open Payments record

Years since graduation

6 years (graduated 2020)

CMS Doctors and Clinicians data list 2020 as the year this clinician finished professional 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

2020

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.

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?”

Guide: What Medicare assignment means

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.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Brett Siemon 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.

Guide: What Medicare enrollment (PECOS) means

Compared with the same specialty in Columbus and Ohio

Billing and prescribing volume is not a quality rating.

Medicare Part B services

More Medicare Part B services than 95% of clinicians listed under Anesthesiologist Assistant in Columbus, OH (2024, 32 clinicians with data). Median for this group: 24. Middle half: 16 to 48.

More Medicare Part B services than 85% of clinicians listed under Anesthesiologist Assistant in Ohio (2024, 202 clinicians with data). Median for this group: 38. Middle half: 18 to 74.

Medicare-allowed amount

A higher Medicare-allowed amount than 95% of clinicians listed under Anesthesiologist Assistant in Columbus, OH (2024, 32 clinicians with data). Median for this group: $2,149. Middle half: $1,414 to $5,969.

A higher Medicare-allowed amount than 95% of clinicians listed under Anesthesiologist Assistant in Ohio (2024, 202 clinicians with data). Median for this group: $3,538. Middle half: $1,726 to $6,954.

Paid by Medicare

A higher Medicare payment amount than 95% of clinicians listed under Anesthesiologist Assistant in Columbus, OH (2024, 32 clinicians with data). Median for this group: $1,662. Middle half: $1,126 to $4,593.

A higher Medicare payment amount than 95% of clinicians listed under Anesthesiologist Assistant in Ohio (2024, 202 clinicians with data). Median for this group: $2,839. Middle half: $1,367 to $5,571.

68 active clinicians are listed under Anesthesiologist Assistant with a practice address in Columbus, OH (450 in Ohio).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Columbus

0% of these 68 clinicians have the CMS telehealth indicator.

80.9% of these 68 clinicians are listed by CMS as accepting Medicare assignment.

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

Open Payments · Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $15.20.

Manufacturer Payment Nature Product Type Amount ($)
ABBVIE INC.
Food and Beverage
In-kind items and services
SKYRIZI General $15.20

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B · Data Year 2024
Reporting Year:

CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2021–2023 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, 2022–2024; 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
01402 Anesthesia for procedure for total knee joint replacement
65 64 $1725.23 $145.59
01214 Anesthesia for total hip replacement
28 27 $1833.39 $154.53
00670 Anesthesia for extensive surgery on spine
14 14 $2957.14 $258.40
01638 Anesthesia for open or endoscopic total shoulder joint replacement
13 13 $2176.15 $191.50
01400 Anesthesia for other procedure or exam of knee joint using an endoscope
12 12 $1121.25 $98.94

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

Self-certified to NPPES: 2024-08-06
Anesthesiologist Assistant Primary Specialty

NUCC Taxonomy Code: 367H00000X

License # reported to NPPES OH 67.000422

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.

Anesthesiologist Assistant

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.

Anesthesiologist Assistant

NUCC Taxonomy Code: 367H00000X

License # reported to NPPES WI 164

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.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: State Medical Board of Ohio.
Look Up on State Board Site

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid ID
100102500 (WI)

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - ANESTHESIOLOGY ASSISTANT

Medicare Enrollment ID

I20210928002899

Enrollment State Jurisdiction

OH

PECOS Control ID

9830516673

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

Osu Observation Medicine, Llc

410 W 10th Ave, Columbus, OH 432101240

Phone: 6142938487

Consultant Anesthesiologists Inc.

500 S Cleveland Ave, Westerville, OH 430818971

Phone: 3808984000

Consultant Anesthesiologists Inc.

7333 Smiths Mill Rd, New Albany, OH 430549291

Phone: 6147756600

Secondary Practice Locations

2900 W Oklahoma Ave

Milwaukee, WI 532154330

Phone: 4146496000

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

40 listed
Nicole Amore , APRN-CRNA

Nurse Anesthetist, Certified Registered

NPI 1023337318

APRNCRNA

Rachel Ashworth , CRNA

Nurse Anesthetist, Certified Registered

NPI 1003188038

Certified Registered Nurse Anesthetist

Anna Bever , APRNCRNA

Nurse Anesthetist, Certified Registered

NPI 1083218531
NPI 1013479021

Doctor of Medicine (M.D.)

Dr. Edward Chen , MD

Anesthesiology

NPI 1104868272

Doctor of Medicine (M.D.)

Ashley Dellimuti , AA

Anesthesiologist Assistant

NPI 1093251738

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

9 Historical Events
📍
Updated Practice Location August 06, 2024

Registered at 2121 KENNY RD, COLUMBUS, OH 432103100 (Tel: 6142938487)

📍
Updated Business Mailing Address August 06, 2024

Registered at 700 ACKERMAN RD STE 2120, COLUMBUS, OH 432021559 (Tel: 6142938487)

📍
Updated Business Mailing Address October 01, 2020

Registered at 3301 W FOREST HOME AVE, MILWAUKEE, WI 532152843 (Tel: 4146496000)

✅
NPI Profile Active April 15, 2020

NPI status registered as active in NPPES database

📍
Practice Location (Initial Record) April 15, 2020

Registered at 2900 W OKLAHOMA AVE, MILWAUKEE, WI 532154330 (Tel: 4146496000)

📍
Business Mailing Address (Initial Record) April 15, 2020

Registered at 6366 GREENRIDGE AVE, NEW CARLISLE, OH 453449098 (Tel: 9374080647)

👤
Provider Name / Credentials (Initial Record) April 15, 2020

Recorded as BRETT SIEMON

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) April 15, 2020

Anesthesiologist Assistant

🟢
Initial NPI Registration & Enumeration April 15, 2020

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1073132437
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: April 15, 2020
Last Update: August 06, 2024
Sole Proprietor: No

Other Anesthesiologist Assistants in Columbus

All Anesthesiologist Assistants in Columbus

More public profiles in Ohio

Directory navigation, in NPI number order.

Mailing Address

700 Ackerman Rd Ste 2120

Columbus, OH 432021559

Phone: 6142938487

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.