Mamie E. Ambrosch, PA
Physician Assistant · Saint Louis, MO
Mamie E. Ambrosch, PA is a physician assistant with a practice address in Saint Louis, Missouri, and NPI 1841903101, issued on Jan 3, 2023. Check the license (Missouri 2024006180, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mamie E. Ambrosch
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 2024006180 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
- Jan 3, 2023
- Record last updated
- May 4, 2026
- Fax
- (314) 362-0478
- Medicaid ID
- 220137352 MO
- 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.
- Fizza Abbas, MDInternal Medicine Physician1588079230
- Catey Abbott, DOInternal Medicine Physician1699355347
- Ramzi Abboud, MDMedical Oncology Physician1649684200
- Amy Abdalla, MDRadiation Oncology Physician1932959954
- Heba Abdelal, MDAnatomic Pathology & Clinical Pathology Physician1033633383
- Ali Abdelhay, MDHospitalist Physician1619540606
Verify Mamie E. Ambrosch in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 2024006180Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average physician assistant in 2024
114 Medicare Part D claims for 89 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
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.
Mamie E. Ambrosch among 1,790 physician assistant records in Missouri
Mamie E. Ambrosch, 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 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 fileNo · 70% of these records are
- Record last updated2026 · 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 Mamie E. Ambrosch, PA's NPI number?
Mamie E. Ambrosch, PA's National Provider Identifier (NPI) is 1841903101, issued on Jan 3, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Mamie E. Ambrosch, 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 Mamie E. Ambrosch, PA's license?
NPPES lists Missouri license number 2024006180, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.
How much does Mamie E. Ambrosch, PA prescribe under Medicare Part D?
In 2024, Mamie E. Ambrosch, PA had 114 Medicare Part D claims for 89 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.