Alexandria Elizabeth Peterson, PA
Physician Assistant · Saint Louis, MO
Alexandria Elizabeth Peterson, PA is a physician assistant with a practice address in Saint Louis, Missouri, and NPI 1497493431, issued on May 20, 2022. Check the license (Missouri 2023032439, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Alexandria Elizabeth Peterson
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 2023032439 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110
- Phone
- (314) 362-9123
- Enumerated
- May 20, 2022
- Record last updated
- Nov 3, 2025
- Fax
- (314) 362-0478
- Medicare enrollment
- Enrolled (PECOS I20230906002556); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 1,790 in Missouri → Look up another NPI →
Also registered at 1 Barnes Jewish Hospital Plz
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Alexandria Elizabeth Peterson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 2023032439Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average physician assistant in 2024
291 Medicare Part D claims for 167 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Cyclobenzaprine Hcl52 claims
- Methylprednisolone41 claims
- Ibuprofen22 claims
- Diclofenac Sodium19 claims
- Meloxicam17 claims
- Cephalexin14 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 89.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Washington UniversitySaint Louis, MO
- Washington University Community Specialists, LLCSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexandria Elizabeth Peterson among 1,790 physician assistant records in Missouri
Alexandria Elizabeth Peterson, PA 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 2022, is newer than 68% of them.
- NPI issued2022 · 68% of these records are older, 24% 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 updated2025 · 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).
498 physician assistant records list a practice address in Saint Louis
They are 498 of the 27,605 NPPES records with a practice address in Saint Louis, and 1,790 physician assistant records in Missouri.
All 1,790 in Missouri → Every provider in Saint Louis → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- David Autry, PASaint Louis, MO 631101578587796
- Matthew Callen, PASaint Louis, MO 631101497762793
- Michael Cracchiolo, PASaint Louis, MO 631101891713350
- Jennifer Ehret, PASaint Louis, MO 631101679591101
- Mary Fujarski, PASaint Louis, MO 631101225054547
- Angela Gieseler, PASaint Louis, MO 631101114995818
- Philana Liang, PASaint Louis, MO 631101831130533
- Rebecca Loveless, PASaint Louis, MO 631101649218470
Common questions
What is Alexandria Elizabeth Peterson, PA's NPI number?
Alexandria Elizabeth Peterson, PA's National Provider Identifier (NPI) is 1497493431, issued on May 20, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Alexandria Elizabeth Peterson, PA located?
The NPPES record lists a practice address at 1 Barnes Jewish Hospital Plz, Saint Louis, MO, 63110. Phone: (314) 362-9123. Providers update this record themselves, so call before visiting.
How can I verify Alexandria Elizabeth Peterson, PA's license?
NPPES lists Missouri license number 2023032439, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.
How much does Alexandria Elizabeth Peterson, PA prescribe under Medicare Part D?
In 2024, Alexandria Elizabeth Peterson, PA had 291 Medicare Part D claims for 167 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Alexandria Elizabeth Peterson, PA's MIPS final score?
The 2023 MIPS final score is 89.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.