Dr. Willard L. Chamberlin, DO
- Medicare services, 2022
- 20
- Medicare patients, 2024
- 11
- Hospital affiliations
- 2
- Industry payments
- $210
- Medical group
- 1
- Practice address
- 232 S Woods Mill Rd, Chesterfield, MO 63017
- Practice phone
- Call (314) 434-1500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chamberlin's professional email, personal email and mobile number
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Dr. Willard L. Chamberlin is an anesthesiologist in Chesterfield, Missouri
Dr. Chamberlin practices at St. Luke's Hospital in Chesterfield, Missouri, part of St. Luke's Episcopal-Presbyterian Hospital.
Dr. Chamberlin's NPI, 1437132818, was assigned on November 21, 2005. Dr. Chamberlin graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1980. Dr. Chamberlin holds Missouri license R6E81.
- NPI
- 1437132818NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7618000621
- NPI enumeration date
- November 21, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 434-1500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 72
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Willard L. Chamberlin practices at St. Luke's Hospital in Chesterfield, Missouri
Dr. Chamberlin's primary practice is St. Luke's Hospital, at 232 S Woods Mill Rd, Chesterfield, MO 63017 in St. Louis County. The practice phone is (314) 434-1500.
- St. Luke's Hospital232 S Woods Mill Rd, Chesterfield, MO 63017 · St. Louis CountyPhone(314) 434-1500
Source: Dmand AI Affiliation Data
Dr. Willard L. Chamberlin is affiliated with 3 sites of care and 1 medical group
Dr. Chamberlin's primary practice is St. Luke's Hospital in Chesterfield, Missouri, part of St. Luke's Episcopal-Presbyterian Hospital. Dr. Chamberlin is also affiliated with Select Specialty Hospital - St. Louis. The medical group on file is Metro-West Anesthesia Group. Dmand AI also links Dr. Chamberlin to 1 more breast imaging center, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Willard L. Chamberlin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chamberlin practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St. Luke's Hospital | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across St. Luke's Episcopal-Presbyterian Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Willard L. Chamberlin is one of 819 anesthesiologists in Missouri
Anesthesiology is Dr. Chamberlin's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Chamberlin is licensed in Missouri.
Specialties and state licenses
- Anesthesiology, MissouriPrimary
Anesthesiologists near Dr. Chamberlin
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. Willard L. Chamberlin billed Medicare for 20 services in 2022
CMS data shows 20 Medicare services from Dr. Chamberlin across 1 procedure code in 2022, for 11 Medicare patients. Medicare paid $8,929 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chamberlin's Medicare services by type, 2020 to 2022
- 2020
- 2022
- Anesthesia
- 2020: 02022: 20
- Imaging
- 2020: 452022: 0100%
- Surgery
- 2020: 402022: 0100%
Dr. Chamberlin compared with the Missouri median for anesthesiologists, 2022
- Dr. Chamberlin
- Missouri median
- Medicare services
- 20vs 7573% below
- Medicare patients
- 11vs 14092% below
Medians across 839 anesthesiologists in Missouri with Dmand AI profiles that report each measure.
Dr. Chamberlin's most billed Medicare procedure codes, 2022
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. Chamberlin?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chamberlin and other anesthesiologists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Willard L. Chamberlin treated 11 Medicare patients in 2024, average age 71
CMS counts 11 Medicare patients who saw Dr. Chamberlin in 2024. The largest group is 85 and over, with 0 patients. Their average risk score is 1.08, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chamberlin's median patient age at 54, with 59% women.
Dr. Chamberlin's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chamberlin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Willard L. Chamberlin takes part in Medicare
Dr. Chamberlin 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. Willard L. Chamberlin received $210 in industry payments from 2016 to 2024
CMS Open Payments shows 4 general payments to Dr. Chamberlin from 2 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $141.
General payments to Dr. Chamberlin by program year, 2016 to 2024
Companies that paid Dr. Chamberlin the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Willard L. Chamberlin graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville
Dr. Chamberlin graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1980.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Willard L. Chamberlin'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. Willard L. Chamberlin
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. Willard L. Chamberlin's NPI number?
Dr. Willard L. Chamberlin's NPI number is 1437132818. It was assigned on November 21, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Willard L. Chamberlin?
Dr. Willard L. Chamberlin is an anesthesiologist in Chesterfield, Missouri. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Willard L. Chamberlin practice?
Dr. Chamberlin practices at 232 S Woods Mill Rd, Chesterfield, MO 63017. Dr. Chamberlin's primary practice is St. Luke's Hospital in Chesterfield, Missouri, part of St. Luke's Episcopal-Presbyterian Hospital. Dmand AI also links Dr. Chamberlin to 1 breast imaging center.
What is Dr. Willard L. Chamberlin's office phone number?
The practice phone on file for Dr. Chamberlin is (314) 434-1500.
What is Dr. Willard L. Chamberlin's medical license number?
Dr. Chamberlin holds Missouri license R6E81.
Which hospitals is Dr. Willard L. Chamberlin affiliated with?
Dr. Chamberlin practices at St. Luke's Hospital in Chesterfield, Missouri. Dr. Chamberlin is also affiliated with Select Specialty Hospital - St. Louis.
What medical group is Dr. Willard L. Chamberlin part of?
Dr. Chamberlin is linked to Metro-West Anesthesia Group.
Does Dr. Willard L. Chamberlin accept Medicare?
Yes. CMS data shows Dr. Chamberlin billed Medicare for 20 services in 2022, and Dr. Chamberlin accepts Medicare assignment.
How many Medicare patients does Dr. Willard L. Chamberlin see?
CMS counts 11 Medicare patients who saw Dr. Chamberlin in 2024, with an average age of 71.
What services does Dr. Willard L. Chamberlin bill to Medicare?
In 2022, Dr. Chamberlin's most billed Medicare services were anesthesia (00670).
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Where did Dr. Willard L. Chamberlin go to medical school?
Dr. Chamberlin graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1980.
Has Dr. Willard L. Chamberlin received payments from drug or device companies?
CMS Open Payments shows $210 in general payments to Dr. Chamberlin from 2 companies from 2016 to 2024. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Willard L. Chamberlin been practicing?
Dr. Chamberlin graduated from medical school in 1980, 46 years ago.
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