NPPES file of Aug 9, 2026

Brittany Leigh Anne Merson, MSN, FNP-C

Family Nurse Practitioner · Hagerstown, MD

Brittany Leigh Anne Merson, MSN, FNP-C is a family nurse practitioner with a practice address in Hagerstown, Maryland, and NPI 1164126918, issued on Mar 27, 2023. Check the license (Maryland R199513, as entered in NPPES) with the Maryland 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
1164126918
Name
Brittany Leigh Anne Merson
Credential
MSN, FNP-C
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
R199513 MD
Self-reported in NPPES; status is on the state search
Practice location
11110 Medical Campus RD Ste 150, Hagerstown, MD 21742
Phone
(301) 665-4825
Enumerated
Mar 27, 2023
Record last updated
May 2, 2023
Medicare enrollment
Enrolled (PECOS I20230424000624); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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 11110 Medical Campus RD Ste 150

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

  1. Samuel Chan, M.D.Internal Medicine Physician1972538841
  2. April Holtry, NP-CPrimary Care Nurse Practitioner1801375191
  3. Oksana Karpov, D.OInternal Medicine Physician1821294414
  4. Amanda MohlerFamily Nurse Practitioner1154933687
  5. Tammy MyersRespiratory/Developmental/Rehabilitative Specialist/Technologist1780470344
  6. Francesca Okoye, MD-PHDRheumatology Physician1992002992

Verify Brittany Leigh Anne Merson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Maryland board licenses this profession
    Search for license R199513
    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 Maryland license search

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5.3 times the Medicare Part D claims of the average family nurse practitioner in 2024

6,899 Medicare Part D claims for 732 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 99 claims were for opioids.

  1. Brittany Merson6,899
  2. Specialty average1,305

Most prescribed

  1. Atorvastatin Calcium373 claims
  2. Amlodipine Besylate278 claims
  3. Metformin Hcl202 claims
  4. Losartan Potassium197 claims
  5. Hydrochlorothiazide193 claims
  6. Levothyroxine Sodium187 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: $33.37

2 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Brittany Merson$33.37
  2. Specialty average$650.95

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Medical Practices OF Antietam, LLCHagerstown, MD
  2. Meritus Medical Center IncHagerstown, MD

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

115 family nurse practitioner records list a practice address in Hagerstown

They are 115 of the 2,414 NPPES records with a practice address in Hagerstown, and 4,124 family nurse practitioner records in Maryland.

Other family nurse practitioner records in Maryland

  1. Kanisha AaronOwings Mills, MD1518565324
  2. Nicole Aaron, CRNPQueenstown, MD1538916093
  3. Naomi Abaga, CRNPBaltimore, MD1871054494
  4. Kyerewaa Abban-Thompson, NPSilver Spring, MD1144513151
  5. Kristen Abbott, CRNPBerlin, MD1700597382
  6. Mark Abbott, FNPElkridge, MD1013452549
  7. Nabila Abdulwahab, CRNPBowie, MD1629341375
  8. Leila Abedi, CRNP-FGaithersburg, MD1699091603
  9. Hayat Aberra, NP-CEdgewater, MD1295275774
  10. Pamela Abina, CRNPColumbia, MD1154709335

Common questions

What is Brittany Leigh Anne Merson, MSN, FNP-C's NPI number?

Brittany Leigh Anne Merson, MSN, FNP-C's National Provider Identifier (NPI) is 1164126918, issued on Mar 27, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Brittany Leigh Anne Merson, MSN, FNP-C located?

The NPPES record lists a practice address at 11110 Medical Campus RD Ste 150, Hagerstown, MD, 21742. Phone: (301) 665-4825. Providers update this record themselves, so call before visiting.

How can I verify Brittany Leigh Anne Merson, MSN, FNP-C's license?

NPPES lists Maryland license number R199513, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.

How much does Brittany Leigh Anne Merson, MSN, FNP-C prescribe under Medicare Part D?

In 2024, Brittany Leigh Anne Merson, MSN, FNP-C had 6,899 Medicare Part D claims for 732 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.