Mary Ann Horn, MSN, CRNP
Women's Health Nurse Practitioner · Norristown, PA
Mary Ann Horn, MSN, CRNP is a women's health nurse practitioner with a practice address in Norristown, Pennsylvania, and NPI 1972747822, issued on Apr 22, 2009. Check the license (Pennsylvania UP 001843-6, as entered in NPPES) with the Pennsylvania board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Ann Horn
- Credential
- MSN, CRNP
- Primary taxonomy
- Women's Health Nurse Practitioner 363LW0102X
- License number
- UP 001843-6 PA
Self-reported in NPPES; status is on the state search - Practice location
- 1221 Powell St, Norristown, PA 19401
- Phone
- (610) 279-6095
- Enumerated
- Apr 22, 2009
- Record last updated
- Apr 22, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (610) 279-7268
- Entity
- Type 1 · individual
8 nearest women's health nurse practitioner records → All 420 in Pennsylvania → Look up another NPI →
Also registered at 1221 Powell St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lynn Michel, CRNPObstetrics & Gynecology Nurse Practitioner1881838738
- Mary Moyer, WHNPWomen's Health Nurse Practitioner1306628276
Verify Mary Ann Horn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
Search for license UP 001843-6Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average women's health nurse practitioner in 2024
20 Medicare Part D claims, against an average of 217 among the 3,809 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Valacyclovir14 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.
Mary Ann Horn among 420 women's health nurse practitioner records in Pennsylvania
Mary Ann Horn, MSN, CRNP is one of 420 women's health nurse practitioner records with a practice address in Pennsylvania. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 27% of them.
- NPI issued2009 · 27% of these records are older, 70% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileNo · 51% of these records are
- Record last updated2009 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LW0102X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Women's Health Nurse Practitioner providers in Pennsylvania
There are 420 women's health nurse practitioner records in Pennsylvania.
All 420 in Pennsylvania → Every provider in Norristown → Women's Health Nurse Practitioner nationwide →
The 8 women's health nurse practitioner records with the nearest ZIP codes
- Maris MosleyNorristown, PA 194011316314537
- Mary Moyer, WHNPNorristown, PA 194011306628276
- Marlene Kolb, CRNPEast Norriton, PA 194031164129391
- Alexis Lewis, CRNPEast Norriton, PA 194031710749312
- Katherine O'Laughlin, CRNPEast Norriton, PA 194031578112058
- Gina Menarde, CRNP, WHNP-BCKing Of Prussia, PA 194061932831260
- Melinda Olivencia-LozadaWest Grove, PA 193901215306964
- Kathryn Severson, APN, WHNP-BCWest Grove, PA 193901932508819
Common questions
What is Mary Ann Horn, MSN, CRNP's NPI number?
Mary Ann Horn, MSN, CRNP's National Provider Identifier (NPI) is 1972747822, issued on Apr 22, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Mary Ann Horn, MSN, CRNP located?
The NPPES record lists a practice address at 1221 Powell St, Norristown, PA, 19401. Phone: (610) 279-6095. Providers update this record themselves, so call before visiting.
How can I verify Mary Ann Horn, MSN, CRNP's license?
NPPES lists Pennsylvania license number UP 001843-6, as entered by the provider. Search the Pennsylvania board that licenses this profession; the NPPES record confirms identity only.
How much does Mary Ann Horn, MSN, CRNP prescribe under Medicare Part D?
In 2024, Mary Ann Horn, MSN, CRNP had 20 Medicare Part D claims; the average among women's health nurse practitioner prescribers was 217. 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.