Ellen O'Brien Atwood, PA-C
Physician Assistant · Saint Charles, MO
Ellen O'Brien Atwood, PA-C is a physician assistant with a practice address in Saint Charles, Missouri, and NPI 1487104303, issued on Oct 4, 2016. Check the license (Missouri 2019027949, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ellen O'Brien Atwood
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 2019027949 MO
085005966 IL
Self-reported in NPPES; status is on the state search - Practice location
- 300 1St Capitol Dr, Saint Charles, MO 63301
- Phone
- (636) 947-5000
- Enumerated
- Oct 4, 2016
- Record last updated
- Aug 23, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (636) 947-5090
- Medicare enrollment
- Enrolled (PECOS I20191011001281); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 1,790 in Missouri → Look up another NPI →
Also registered at 300 1St Capitol Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Christina Azzam, CRNACertified Registered Nurse Anesthetist1487074357
- Gregg Bantrup, M.D.Anesthesiology Physician1215986435
Verify Ellen O'Brien Atwood in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 2019027949Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
67% fewer Medicare Part D claims than the average physician assistant in 2024
275 Medicare Part D claims for 173 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Prednisone67 claims
- Doxycycline Monohydrate30 claims
- Cephalexin21 claims
- Amoxicillin-Clavulanate Potass20 claims
- Azithromycin19 claims
- Methocarbamol13 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: $18.21
1 payment: food and beverage; the largest payer was Pfizer Inc. The 64,719 providers of this specialty with any payment received $841.65 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
- Tauc IL PCO Fallon, IL
- Total Access Urgent Care PCSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ellen O'Brien Atwood among 1,790 physician assistant records in Missouri
Ellen O'Brien Atwood, PA-C is one of 1,790 physician assistant records with a practice address in Missouri. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 39% of them.
- NPI issued2016 · 39% of these records are older, 58% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2016 · median 2019 among the 1,250 with a school on file
- Record last updated2019 · 32% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
22 physician assistant records list a practice address in Saint Charles
They are 22 of the 1,547 NPPES records with a practice address in Saint Charles, and 1,790 physician assistant records in Missouri.
All 1,790 in Missouri → Every provider in Saint Charles → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Ray Bartlett, P.A.Saint Charles, MO 633011194738260
- Nathaniel Best, PA-CSaint Charles, MO 633011467928408
- Kathleen Christlieb, PASaint Charles, MO 633011013112176
- Bridget Franklin, PASaint Charles, MO 633011568996213
- Jennifer Herndon, P.ASaint Charles, MO 633011629217690
- Mark Johnson, PA-C MT ASCPSaint Charles, MO 633011568453132
- Rachel Kitzmann, PA-CSaint Charles, MO 633011588448583
- Kathleen Nikodym, PASaint Charles, MO 633011235210162
Common questions
What is Ellen O'Brien Atwood, PA-C's NPI number?
Ellen O'Brien Atwood, PA-C's National Provider Identifier (NPI) is 1487104303, issued on Oct 4, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Ellen O'Brien Atwood, PA-C located?
The NPPES record lists a practice address at 300 1St Capitol Dr, Saint Charles, MO, 63301. Phone: (636) 947-5000. Providers update this record themselves, so call before visiting.
How can I verify Ellen O'Brien Atwood, PA-C's license?
NPPES lists Missouri license number 2019027949, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.
How much does Ellen O'Brien Atwood, PA-C prescribe under Medicare Part D?
In 2024, Ellen O'Brien Atwood, PA-C had 275 Medicare Part D claims for 173 beneficiaries; the average among physician assistant prescribers was 830. 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.