Dr. Christopher Michael Ahrens, DO
- Medicare services, 2024
- 118
- Medicare patients, 2024
- 249
- Hospital affiliations
- 1
- Industry payments
- $1,018
- Medical group
- 1
- Practice address
- 615 New Ballas Road, Saint Louis, MO 63141
- Practice phone
- Call (314) 251-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Christopher Michael Ahrens is an anesthesiologist in Saint Louis, Missouri
Dr. Ahrens practices at Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy.
Dr. Ahrens' NPI, 1235426297, was assigned on June 28, 2011. Dr. Ahrens graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 2011. Dr. Ahrens holds Missouri license 2011017507.
- NPI
- 1235426297NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5597057018
- NPI enumeration date
- June 28, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 251-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Christopher Michael Ahrens practices at Mercy Hospital St. Louis in Saint Louis, Missouri
Dr. Ahrens' primary practice is Mercy Hospital St. Louis, at 615 New Ballas Road, Saint Louis, MO 63141 in St. Louis County. The practice phone is (314) 251-6000.
- Mercy Hospital St. Louis615 New Ballas Road, Saint Louis, MO 63141 · St. Louis CountyPhone(314) 251-6000
Source: Dmand AI Affiliation Data
Dr. Christopher Michael Ahrens is affiliated with 1 site of care and 1 medical group
Dr. Ahrens' primary practice is Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy. The medical group on file is Western Anesthesiology Associates, Inc.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Christopher Michael Ahrens' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ahrens practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Hospital St. Louis | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Christopher Michael Ahrens is one of 819 anesthesiologists in Missouri
Anesthesiology is Dr. Ahrens' primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Ahrens is licensed in Missouri.
Specialties and state licenses
- Anesthesiology, MissouriPrimary
Anesthesiologists near Dr. Ahrens
Counts of anesthesiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Christopher Michael Ahrens billed Medicare for 118 services in 2024
CMS data shows 118 Medicare services from Dr. Ahrens across 6 procedure codes in 2024, for 249 Medicare patients. Medicare paid $7,210 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Ahrens' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 1322024: 9230%
- Surgery
- 2023: 612024: 2657%
- Tests and treatments
- 2023: 412024: 0100%
Dr. Ahrens compared with the Missouri median for anesthesiologists, 2024
- Dr. Ahrens
- Missouri median
- Medicare services
- 118vs 7557% above
- Medicare patients
- 249vs 14078% above
Medians across 839 anesthesiologists in Missouri with Dmand AI profiles that report each measure.
Dr. Ahrens' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Ahrens?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ahrens and other anesthesiologists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Christopher Michael Ahrens treated 249 Medicare patients in 2024, average age 73
CMS counts 249 Medicare patients who saw Dr. Ahrens in 2024. The largest group is 65 to 74, with 113 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 7% are also on Medicaid. Their average risk score is 1.60, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Ahrens' median patient age at 67, with 56% women.
Dr. Ahrens' Medicare patients by age, 2024
Dr. Ahrens' Medicare patients by sex, 2024
- Women13855%
- Men11145%
Chronic conditions among Dr. Ahrens' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis56%
- Anxiety36%
- Chronic kidney disease35%
- Ischemic heart disease35%
- Diabetes32%
- Mood disorders31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ahrens' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women56%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Christopher Michael Ahrens takes part in Medicare
Dr. Ahrens accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Christopher Michael Ahrens received $1,018 in industry payments from 2016 to 2025
CMS Open Payments shows 14 general payments to Dr. Ahrens from 11 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Edwards Lifesciences Corporation paid the most, $264.
General payments to Dr. Ahrens by program year, 2016 to 2025
Companies that paid Dr. Ahrens the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Christopher Michael Ahrens graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville
Dr. Ahrens graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 2011.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Christopher Michael Ahrens's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Christopher Michael Ahrens
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Christopher Michael Ahrens' NPI number?
Dr. Christopher Michael Ahrens' NPI number is 1235426297. It was assigned on June 28, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Christopher Michael Ahrens?
Dr. Christopher Michael Ahrens is an anesthesiologist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Christopher Michael Ahrens practice?
Dr. Ahrens practices at 615 New Ballas Road, Saint Louis, MO 63141. Dr. Ahrens' primary practice is Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy.
What is Dr. Christopher Michael Ahrens' office phone number?
The practice phone on file for Dr. Ahrens is (314) 251-6000.
What is Dr. Christopher Michael Ahrens' medical license number?
Dr. Ahrens holds Missouri license 2011017507.
Which hospitals is Dr. Christopher Michael Ahrens affiliated with?
Dr. Ahrens practices at Mercy Hospital St. Louis in Saint Louis, Missouri.
What medical group is Dr. Christopher Michael Ahrens part of?
Dr. Ahrens is linked to Western Anesthesiology Associates, Inc.
Does Dr. Christopher Michael Ahrens accept Medicare?
Yes. CMS data shows Dr. Ahrens billed Medicare for 118 services in 2024, and Dr. Ahrens accepts Medicare assignment.
How many Medicare patients does Dr. Christopher Michael Ahrens see?
CMS counts 249 Medicare patients who saw Dr. Ahrens in 2024, with an average age of 73.
What services does Dr. Christopher Michael Ahrens bill to Medicare?
In 2024, Dr. Ahrens' most billed Medicare services were anesthesia (00811), surgery: heart and blood vessels (36620) and anesthesia (00142).
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Where did Dr. Christopher Michael Ahrens go to medical school?
Dr. Ahrens graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 2011.
Has Dr. Christopher Michael Ahrens received payments from drug or device companies?
CMS Open Payments shows $1,018 in general payments to Dr. Ahrens from 11 companies from 2016 to 2025. The largest total came from Edwards Lifesciences Corporation.
How long has Dr. Christopher Michael Ahrens been practicing?
Dr. Ahrens graduated from medical school in 2011, 15 years ago.
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