Barbara Anne O'Brien, DO
Adult Medicine Physician · Ellisville, MO
Barbara Anne O'Brien, DO is an adult medicine physician with a practice address in Ellisville, Missouri, and NPI 1437211794, issued on Dec 14, 2006. Check the license (Missouri 2003000621, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Barbara Anne O'Brien
- Credential
- DO
- Primary taxonomy
- Adult Medicine Physician 207QA0505X
- License number
- 2003000621 MO
Self-reported in NPPES; status is on the state search - Practice location
- 225 Clarkson RD, Ellisville, MO 63011
- Phone
- (636) 685-7715
- Enumerated
- Dec 14, 2006
- Record last updated
- Jul 16, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (314) 590-5916
- Medicaid ID
- 209258102 MO
- Medicare enrollment
- Enrolled (PECOS I20070503000043); accepts Medicare assignment
- Medical or professional school
- At Still University Of Health Sciences, College Of Osteo Med, Kirksville, 2000
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest adult medicine physician records → All 34 in Missouri → Look up another NPI →
Also registered at 225 Clarkson RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Bryan Duepner, DOFamily Medicine Physician1861912826
- Eileen Holt, NPFamily Nurse Practitioner1629439054
- William Koeppel, D.O.Family Medicine Physician1194162883
- Cynthia Poelker, M.D.Family Medicine Physician1275735458
- Sarah Renfert, M.D.Emergency Medicine Physician1932171600
Verify Barbara Anne O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2003000621Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.1 times the Medicare Part D claims of the average adult medicine physician in 2024
9,342 Medicare Part D claims for 688 beneficiaries, against an average of 3,002 among the 1,307 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 242 claims were for opioids.
Most prescribed
- Levothyroxine Sodium437 claims
- Lisinopril429 claims
- Atorvastatin Calcium351 claims
- Amlodipine Besylate315 claims
- Rosuvastatin Calcium311 claims
- Losartan Potassium260 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $108.37
6 payments; by number, the most common kind was food and beverage; the largest payer was Sanofi Pasteur Inc. The 664 providers of this specialty with any payment received $1,405.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Physical Therapy Spine And Sports Medicine LLCBallwin, MO
- Westglen Family Physicians LLCEllisville, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Barbara Anne O'Brien among 34 adult medicine physician records in Missouri
Barbara Anne O'Brien, DO is one of 34 adult medicine physician records with a practice address in Missouri. 56% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 71% newer
- In a Medicare fileYes · 56% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated2000 · median 2015 among the 13 with a school on file
- Record last updated2018 · 44% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QA0505X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Adult Medicine Physician providers in Missouri
There are 34 adult medicine physician records in Missouri.
All 34 in Missouri → Every provider in Ellisville → Adult Medicine Physician nationwide →
The 8 adult medicine physician records with the nearest ZIP codes
- Gary Campbell, DOChesterfield, MO 630171194902510
- Rebecca Strickland, NPChesterfield, MO 630051376318162
- Leslie Robins, D.O.Eureka, MO 630251245485408
- Jason Mehrtens, MDFenton, MO 630261194772129
- Joseph Moleski, D.O.Fenton, MO 630261417337676
- Jean Johnson-Strachan, MDFlorissant, MO 630331811032899
- Valerie Walker, M.D.Bridgeton, MO 630441083784375
- Michael Cole, MDSaint Louis, MO 631101104515857
Common questions
What is Barbara Anne O'Brien, DO's NPI number?
Barbara Anne O'Brien, DO's National Provider Identifier (NPI) is 1437211794, issued on Dec 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Barbara Anne O'Brien, DO located?
The NPPES record lists a practice address at 225 Clarkson RD, Ellisville, MO, 63011. Phone: (636) 685-7715. Providers update this record themselves, so call before visiting.
How can I verify Barbara Anne O'Brien, DO's license?
NPPES lists Missouri license number 2003000621, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Barbara Anne O'Brien, DO prescribe under Medicare Part D?
In 2024, Barbara Anne O'Brien, DO had 9,342 Medicare Part D claims for 688 beneficiaries; the average among adult medicine physician prescribers was 3,002. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.