NPPES file of Aug 9, 2026

Diana E. Armstrong, APRN-BC

Adult Health Nurse Practitioner · Saint Louis, MO

Diana E. Armstrong, APRN-BC is an adult health nurse practitioner with a practice address in Saint Louis, Missouri, and NPI 1295841484, issued on Aug 21, 2006. Check the license (Missouri 100571, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1295841484
Name
Diana E. Armstrong
Credential
APRN-BC
Primary taxonomy
Adult Health Nurse Practitioner 363LA2200X
License number
100571 MO
Self-reported in NPPES; status is on the state search
Practice location
621 S New Ballas RD Ste 3005B, Saint Louis, MO 63141
Phone
(314) 567-5850
Enumerated
Aug 21, 2006
Record last updated
Oct 27, 2022
Fax
(314) 567-9169
Medicare enrollment
Enrolled (PECOS I20061006000133); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 621 S New Ballas RD Ste 3005B

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Kenneth Adams, PHYSICIAN ASSISTANTPhysician Assistant1851801823
  2. Rachel Alick, PAPhysician Assistant1073103180
  3. Andrew Bliss, PA-CPhysician Assistant1295249274
  4. Jon Carlson, M.D.Orthopaedic Surgery Physician1508178799
  5. Schuyler Halverson, MDOrthopaedic Hand Surgery Physician1154764116
  6. Paige Hamilton, PA-CPhysician Assistant1861914368

Verify Diana E. Armstrong in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Missouri board licenses this profession
    Search for license 100571    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Missouri license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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92% fewer Medicare Part D claims than the average adult health nurse practitioner in 2024

96 Medicare Part D claims for 47 beneficiaries, against an average of 1,280 among the 16,937 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Diana Armstrong96
  2. Specialty average1,280

Most prescribed

  1. Meloxicam48 claims
  2. Amoxicillin20 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

  1. Mercy Clinic Surgical Specialists LLCSaint Louis, MO

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

332 adult health nurse practitioner records list a practice address in Saint Louis

They are 332 of the 27,605 NPPES records with a practice address in Saint Louis, and 794 adult health nurse practitioner records in Missouri.

All 332 in Saint Louis → All 794 in Missouri → Every provider in Saint Louis →

Other adult health nurse practitioner records in Missouri

  1. Amber Abeln, ANPJefferson City, MO1720275027
  2. Elizabeth Abernathy, N.P.Saint Louis, MO1962680264
  3. Sammer AckermannLake Saint Louis, MO1760326425
  4. Kimberly Adams, ANPColumbia, MO1205172301
  5. Joni Ahern, NPColumbia, MO1033570205
  6. Elizabeth Aholt, ANP-CWashington, MO1568168623
  7. Laura Allen, N.P.Fenton, MO1760878839
  8. Jamie Anastas, ACNPSaint Louis, MO1174952089
  9. Taylor Anderson, AGNPSaint Louis, MO1639796899
  10. Jane Angle, ANPSaint Louis, MO1932617925

Common questions

What is Diana E. Armstrong, APRN-BC's NPI number?

Diana E. Armstrong, APRN-BC's National Provider Identifier (NPI) is 1295841484, issued on Aug 21, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Diana E. Armstrong, APRN-BC located?

The NPPES record lists a practice address at 621 S New Ballas RD Ste 3005B, Saint Louis, MO, 63141. Phone: (314) 567-5850. Providers update this record themselves, so call before visiting.

How can I verify Diana E. Armstrong, APRN-BC's license?

NPPES lists Missouri license number 100571, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.

How much does Diana E. Armstrong, APRN-BC prescribe under Medicare Part D?

In 2024, Diana E. Armstrong, APRN-BC had 96 Medicare Part D claims for 47 beneficiaries; the average among adult health nurse practitioner prescribers was 1,280. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.