Maureen M. Mercier, ACNP
Nurse Practitioner · Saint Louis, MO
Maureen M. Mercier, ACNP is a nurse practitioner with a practice address in Saint Louis, Missouri, and NPI 1396101135, issued on Jan 9, 2016. Check the license (Missouri 2015042849, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Maureen M. Mercier
- Credential
- ACNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 2015042849 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110
- Phone
- (314) 747-9889
- Enumerated
- Jan 9, 2016
- Record last updated
- Apr 17, 2025
- Fax
- (877) 438-4530
- Medicaid ID
- 420028461 MO
- Medicare enrollment
- Enrolled (PECOS I20160219002009); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 1,720 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 Maureen M. Mercier in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 2015042849Check 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% fewer Medicare Part D claims than the average nurse practitioner in 2024
161 Medicare Part D claims for 55 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.
Most prescribed
- Creon20 claims
- Pantoprazole Sodium13 claims
- Tradjenta13 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: $198.99
1 payment: food and beverage; the largest payer was Eurofins Viracor, LLC. The 38,884 providers of this specialty with any payment received $791.64 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 one group practice
- Washington UniversitySaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maureen M. Mercier among 1,720 nurse practitioner records in Missouri
Maureen M. Mercier, ACNP is one of 1,720 nurse practitioner records with a practice address in Missouri. 78% 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 45% of them.
- NPI issued2016 · 45% of these records are older, 49% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2015 · median 2017 among the 1,080 with a school on file
- Record last updated2025 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
437 nurse practitioner records list a practice address in Saint Louis
They are 437 of the 27,605 NPPES records with a practice address in Saint Louis, and 1,720 nurse practitioner records in Missouri.
All 1,720 in Missouri → Every provider in Saint Louis → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Natalie Bryant, ACNPSaint Louis, MO 631101396744207
- Christine Debold, ANPSaint Louis, MO 631101154363513
- Debra Gase, FNPSaint Louis, MO 631101972529105
- Monica Hente, PNPSaint Louis, MO 631101013996313
- Patricia Knutsen, AHCNSSaint Louis, MO 631101184651184
- Frank Krajczar, ANPSaint Louis, MO 631101922002484
- Carol Massmann, PNPSaint Louis, MO 631101598782013
- Brenda Patterson, FNPSaint Louis, MO 631101497732986
Common questions
What is Maureen M. Mercier, ACNP's NPI number?
Maureen M. Mercier, ACNP's National Provider Identifier (NPI) is 1396101135, issued on Jan 9, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Maureen M. Mercier, ACNP located?
The NPPES record lists a practice address at 1 Barnes Jewish Hospital Plz, Saint Louis, MO, 63110. Phone: (314) 747-9889. Providers update this record themselves, so call before visiting.
How can I verify Maureen M. Mercier, ACNP's license?
NPPES lists Missouri license number 2015042849, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.
How much does Maureen M. Mercier, ACNP prescribe under Medicare Part D?
In 2024, Maureen M. Mercier, ACNP had 161 Medicare Part D claims for 55 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.