NPPES file of Aug 9, 2026

Karen Ann Prahler, CRNP

Family Nurse Practitioner · Prince Frederick, MD

Karen Ann Prahler, CRNP is a family nurse practitioner with a practice address in Prince Frederick, Maryland, and NPI 1578166492, issued on Nov 21, 2020. Check the license (Maryland R234785, 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
1578166492
Name
Karen Ann Prahler
Credential
CRNP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License numbers
R234785 MD
1165256 KY
Self-reported in NPPES; status is on the state search
Practice location
130 Hospital RD Ste 102, Prince Frederick, MD 20678
Phone
(570) 556-8588
Enumerated
Nov 21, 2020
Record last updated
Dec 15, 2022
Medicare enrollment
Enrolled (PECOS I20230110000922); 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 130 Hospital RD Ste 102

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

  1. James Carson, M.D. MPHOrthopaedic Surgery Physician1780978775
  2. Fahad Rahman, DPMFoot & Ankle Surgery Podiatrist1255072534
  3. Lisa Watson, ARNPAcute Care Nurse Practitioner1396206678

Verify Karen Ann Prahler 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 R234785
    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

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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56% fewer Medicare Part D claims than the average family nurse practitioner in 2024

570 Medicare Part D claims for 219 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.

  1. Karen Prahler570
  2. Specialty average1,305

Most prescribed

  1. Famotidine131 claims
  2. Pantoprazole Sodium99 claims
  3. Omeprazole74 claims
  4. Sod Sulf-Potass Sulf-Mag Sulf63 claims
  5. Linzess38 claims
  6. Gavilyte-G22 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: $805.50

19 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. 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. Karen Prahler$805.50
  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 one group practice

  1. Anne Arundel Gastroenterology Associates, P.A.Bowie, MD

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

Karen Ann Prahler among 4,124 family nurse practitioner records in Maryland

Karen Ann Prahler, CRNP is one of 4,124 family nurse practitioner records with a practice address in Maryland. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 58% of them.

  • NPI issued2020 · 58% of these records are older, 35% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 58% of these records are
  • Graduated2022 · median 2019 among the 2,370 with a school on file
  • Record last updated2022 · 41% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

24 family nurse practitioner records list a practice address in Prince Frederick

They are 24 of the 663 NPPES records with a practice address in Prince Frederick, and 4,124 family nurse practitioner records in Maryland.

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Kwabena Asante, FNP-CPrince Frederick, MD 206781235602905
  2. Deborah Brower, CRNPPrince Frederick, MD 206781225011992
  3. Foong-Chee Cheah, CRNPPrince Frederick, MD 206781912068164
  4. Mary Cho, DNP, NP-C, AE-CPrince Frederick, MD 206781326691916
  5. Elaine Cira, CRNP-FPrince Frederick, MD 206781366597734
  6. Brendan Glowacki, FNP-BC, CRNP-FAMILYPrince Frederick, MD 206781871148973
  7. Makenzie Griffin, FNPPrince Frederick, MD 206781093209645
  8. Catherine Heilig, CRNPPrince Frederick, MD 206781982759411

Common questions

What is Karen Ann Prahler, CRNP's NPI number?

Karen Ann Prahler, CRNP's National Provider Identifier (NPI) is 1578166492, issued on Nov 21, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Karen Ann Prahler, CRNP located?

The NPPES record lists a practice address at 130 Hospital RD Ste 102, Prince Frederick, MD, 20678. Phone: (570) 556-8588. Providers update this record themselves, so call before visiting.

How can I verify Karen Ann Prahler, CRNP's license?

NPPES lists Maryland license number R234785, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.

How much does Karen Ann Prahler, CRNP prescribe under Medicare Part D?

In 2024, Karen Ann Prahler, CRNP had 570 Medicare Part D claims for 219 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.