Mary Katherine Gast, CRNP
Adult Health Nurse Practitioner · Georgetown, DE
Mary Katherine Gast, CRNP is an adult health nurse practitioner with a practice address in Georgetown, Delaware, and NPI 1396963609, issued on Apr 23, 2007. Check the license (Delaware LP-0010565, as entered in NPPES) with the Delaware board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Katherine Gast
- Credential
- CRNP
- Primary taxonomy
- Adult Health Nurse Practitioner 363LA2200X
- License numbers
- LP-0010565 DE
R157914 MD
Self-reported in NPPES; status is on the state search - Practice location
- 21748 Roth Ave, Georgetown, DE 19947
- Phone
- (800) 461-8262
- Enumerated
- Apr 23, 2007
- Record last updated
- Feb 15, 2024
- Fax
- (302) 633-5379
- Entity
- Type 1 · individual
8 nearest adult health nurse practitioner records → All 88 in Delaware → Look up another NPI →
Also registered at 21748 Roth Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary Katherine Gast in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Delaware board licenses this profession
Search for license LP-0010565Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average adult health nurse practitioner in 2024
47 Medicare Part D claims, against an average of 1,280 among the 16,937 providers of this specialty who prescribed in Part D.
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 Katherine Gast among 88 adult health nurse practitioner records in Delaware
Mary Katherine Gast, CRNP is one of 88 adult health nurse practitioner records with a practice address in Delaware. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 23% of them.
- NPI issued2007 · 23% of these records are older, 66% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileNo · 45% of these records are
- Record last updated2024 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2200X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Adult Health Nurse Practitioner providers in Delaware
There are 88 adult health nurse practitioner records in Delaware.
All 88 in Delaware → Every provider in Georgetown → Adult Health Nurse Practitioner nationwide →
The 8 adult health nurse practitioner records with the nearest ZIP codes
- Linda Dean, ANPGeorgetown, DE 199471609804061
- Claudia Pierce, ANP-BCGeorgetown, DE 199471770847402
- Sylvia Judd, N.P.Harrington, DE 199521215111471
- Janice James-Webb, NPLaurel, DE 199561285353532
- Mary Ellen Abendroth, CRNPLewes, DE 199581497848352
- Isabel Benson, NP-CLewes, DE 199581144499229
- Marianne Ledva, CRNPLewes, DE 199581720007024
- Teresiah Kanyingi, AGNPCamden, DE 199341902372105
Common questions
What is Mary Katherine Gast, CRNP's NPI number?
Mary Katherine Gast, CRNP's National Provider Identifier (NPI) is 1396963609, issued on Apr 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mary Katherine Gast, CRNP located?
The NPPES record lists a practice address at 21748 Roth Ave, Georgetown, DE, 19947. Phone: (800) 461-8262. Providers update this record themselves, so call before visiting.
How can I verify Mary Katherine Gast, CRNP's license?
NPPES lists Delaware license number LP-0010565, as entered by the provider. Search the Delaware board that licenses this profession; the NPPES record confirms identity only.
How much does Mary Katherine Gast, CRNP prescribe under Medicare Part D?
In 2024, Mary Katherine Gast, CRNP had 47 Medicare Part D claims; 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.
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.