Mallory B. Warren-Brothers, PA-C
Physician Assistant · Saint Robert, MO
Mallory B. Warren-Brothers, PA-C is a physician assistant with a practice address in Saint Robert, Missouri, and NPI 1043925639, issued on Jan 18, 2023. Check the license (Missouri 2023011900, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mallory B. Warren-Brothers
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 2023011900 MO
588293 MO
Self-reported in NPPES; status is on the state search - Practice location
- 608 Old Route 66, Saint Robert, MO 65584
- Phone
- (573) 336-5100
- Enumerated
- Jan 18, 2023
- Record last updated
- Mar 31, 2023
- Medicare enrollment
- Enrolled (PECOS I20230404001727); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 1,790 in Missouri → Look up another NPI →
Also registered at 608 Old Route 66
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mark Allen, FNP-BCFamily Nurse Practitioner1134791411
- Ann Blackman, MDFamily Medicine Physician1588640510
- Melva Evans, NPFamily Nurse Practitioner1558825430
- Kristopher Flynt, PAPhysician Assistant1578340766
- Jon Moore, PA-CPhysician Assistant1003805201
- Angela Neighbors, FNPNurse Practitioner1427038686
Verify Mallory B. Warren-Brothers in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 2023011900Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% more Medicare Part D claims than the average physician assistant in 2024
1,535 Medicare Part D claims for 240 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Prednisone79 claims
- Doxycycline Hyclate52 claims
- Levothyroxine Sodium51 claims
- Amoxicillin-Clavulanate Potass49 claims
- Furosemide43 claims
- Amlodipine Besylate42 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.
Bills Medicare through one group practice
- Mercy Clinic Springfield CommunitiesRolla, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mallory B. Warren-Brothers among 1,790 physician assistant records in Missouri
Mallory B. Warren-Brothers, 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 2023, is newer than 76% of them.
- NPI issued2023 · 76% of these records are older, 17% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2022 · median 2019 among the 1,250 with a school on file
- Record last updated2023 · 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).
5 physician assistant records list a practice address in Saint Robert
They are 5 of the 168 NPPES records with a practice address in Saint Robert, and 1,790 physician assistant records in Missouri.
All 1,790 in Missouri → Every provider in Saint Robert → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Kristopher Flynt, PASaint Robert, MO 655841578340766
- Jon Moore, PA-CSaint Robert, MO 655841003805201
- James Reeves, PA-C, MPTSaint Robert, MO 655841053444323
- Arthur Sampe, P.A.Saint Robert, MO 655841659361707
- Nathan Crawshaw, PA-CWaynesville, MO 655831801512173
- Christin Hylton, PA-CWaynesville, MO 655831073807145
- Paul Lowe, PA-CWaynesville, MO 655831295903524
- Bryan Davis, PAVienna, MO 655821316928682
Common questions
What is Mallory B. Warren-Brothers, PA-C's NPI number?
Mallory B. Warren-Brothers, PA-C's National Provider Identifier (NPI) is 1043925639, issued on Jan 18, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Mallory B. Warren-Brothers, PA-C located?
The NPPES record lists a practice address at 608 Old Route 66, Saint Robert, MO, 65584. Phone: (573) 336-5100. Providers update this record themselves, so call before visiting.
How can I verify Mallory B. Warren-Brothers, PA-C's license?
NPPES lists Missouri license number 2023011900, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.
How much does Mallory B. Warren-Brothers, PA-C prescribe under Medicare Part D?
In 2024, Mallory B. Warren-Brothers, PA-C had 1,535 Medicare Part D claims for 240 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.