Mary Kowal, CRNP
Nurse Practitioner · Washington, DC
Mary Kowal, CRNP is a nurse practitioner with a practice address in Washington, District of Columbia, and NPI 1710477757, issued on May 15, 2018. Check the license (District of Columbia RN1048243, as entered in NPPES) with the District of Columbia board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Kowal
- Credential
- CRNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- RN1048243 DC
Self-reported in NPPES; status is on the state search - Practice location
- 110 Irving St NW, Washington, DC 20010
- Phone
- (202) 877-7000
- Enumerated
- May 15, 2018
- Record last updated
- Jan 11, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210819001877); accepts Medicare assignment
- Medical or professional school
- Johns Hopkins University School Of Medicine, 2013
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 244 in District of Columbia → Look up another NPI →
Also registered at 110 Irving St NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary Kowal in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich District of Columbia board licenses this profession
Search for license RN1048243Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% more Medicare Part D claims than the average nurse practitioner in 2024
1,513 Medicare Part D claims for 179 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Spironolactone200 claims
- Metoprolol Succinate140 claims
- Torsemide136 claims
- Jardiance128 claims
- Furosemide125 claims
- Entresto111 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: $362.56
5 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 38,884 providers of this specialty with any payment received $791.64 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
- Duke Health Integrated Practice IncRaleigh, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Kowal among 244 nurse practitioner records in District of Columbia
Mary Kowal, CRNP is one of 244 nurse practitioner records with a practice address in District of Columbia. 57% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 64% of them.
- NPI issued2018 · 64% of these records are older, 32% newer
- In a Medicare fileYes · 57% of these records are
- In the CMS Doctors and Clinicians fileYes · 36% of these records are
- Graduated2013 · median 2018 among the 89 with a school on file
- Record last updated2021 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a District of Columbia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nurse Practitioner providers in District of Columbia
There are 244 nurse practitioner records in District of Columbia.
All 244 in District of Columbia → Every provider in Washington → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Brenda Beckett, NPWashington, DC 200101265403109
- Cynthia Bither, NPWashington, DC 200101255310173
- Cynthia Bullis-Vasco, NPWashington, DC 200101548249303
- Susan Gaylor, MDWashington, DC 200101780664763
- Lindsey Guirgues, NPWashington, DC 200101538131602
- Marie Heyrana, MDWashington, DC 200101861462301
- Michelle Jones, NPWashington, DC 200101528038270
- Kathleen Lavery, NPWashington, DC 200101639149537
Common questions
What is Mary Kowal, CRNP's NPI number?
Mary Kowal, CRNP's National Provider Identifier (NPI) is 1710477757, issued on May 15, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Mary Kowal, CRNP located?
The NPPES record lists a practice address at 110 Irving St NW, Washington, DC, 20010. Phone: (202) 877-7000. Providers update this record themselves, so call before visiting.
How can I verify Mary Kowal, CRNP's license?
NPPES lists District of Columbia license number RN1048243, as entered by the provider. Search the District of Columbia board that licenses this profession; the NPPES record confirms identity only.
How much does Mary Kowal, CRNP prescribe under Medicare Part D?
In 2024, Mary Kowal, CRNP had 1,513 Medicare Part D claims for 179 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.