Abby Marissa Nelson, PA
Physician Assistant · Saint Louis, MO
Abby Marissa Nelson, PA is a physician assistant with a practice address in Saint Louis, Missouri, and NPI 1306302740, issued on Feb 11, 2019. Check the license (Missouri 2019006015, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Abby Marissa Nelson
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 2019006015 MO
Self-reported in NPPES; status is on the state search - Practice location
- 12634 Olive Blvd, Saint Louis, MO 63141
- Phone
- (314) 996-8099
- Enumerated
- Feb 11, 2019
- Record last updated
- Apr 17, 2025
- Fax
- (314) 996-8132
- Medicaid ID
- 220072978 MO
- Medicare enrollment
- Enrolled (PECOS I20191230001497); accepts Medicare assignment
- Medical or professional school
- Saint Louis University School Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 1,790 in Missouri → Look up another NPI →
Also registered at 12634 Olive Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Abby Marissa Nelson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 2019006015Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average physician assistant in 2024
86 Medicare Part D claims for 27 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Clopidogrel11 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): 88.9 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).
Industry payments in 2024: $272.45
5 payments; by number, the most common kind was food and beverage; the largest payer was Atricure, 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 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).
Abby Marissa Nelson among 1,790 physician assistant records in Missouri
Abby Marissa Nelson, 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 2019, is newer than 50% of them.
- NPI issued2019 · 50% of these records are older, 43% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2018 · 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
- Christopher Berner, P.A.-CSaint Louis, MO 631411376674176
- Lindsey Blaha, PA-CSaint Louis, MO 631411609802123
- Heather Brinkman, PHY ASSIST CERTSaint Louis, MO 631411992718522
- Michelle BuschSaint Louis, MO 631411760585087
- Kara Cardinal, PASaint Louis, MO 631411619065331
- Amie Chang, P.A.Creve Coeur, MO 631411366557209
- Kara Harres, PASaint Louis, MO 631411306920277
- Shirley Haynes, PA-CSaint Louis, MO 631411225003551
Common questions
What is Abby Marissa Nelson, PA's NPI number?
Abby Marissa Nelson, PA's National Provider Identifier (NPI) is 1306302740, issued on Feb 11, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Abby Marissa Nelson, PA located?
The NPPES record lists a practice address at 12634 Olive Blvd, Saint Louis, MO, 63141. Phone: (314) 996-8099. Providers update this record themselves, so call before visiting.
How can I verify Abby Marissa Nelson, PA's license?
NPPES lists Missouri license number 2019006015, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.
How much does Abby Marissa Nelson, PA prescribe under Medicare Part D?
In 2024, Abby Marissa Nelson, PA had 86 Medicare Part D claims for 27 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Abby Marissa Nelson, PA's MIPS final score?
The 2023 MIPS final score is 88.9 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.