Katelyn Gregory, DO
Internal Medicine Physician · Wilmington, DE
Katelyn Gregory, DO is an internal medicine physician with a practice address in Wilmington, Delaware, and NPI 1265936975, issued on Mar 19, 2018. Check the license (Delaware C2-0024050, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Katelyn Gregory
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- C2-0024050 DE
Self-reported in NPPES; status is on the state search - Practice location
- 3506 Kennett Pike FL 2, Wilmington, DE 19807
- Phone
- (302) 661-3400
- Enumerated
- Mar 19, 2018
- Record last updated
- Feb 15, 2024
- Medicare enrollment
- Enrolled (PECOS I20240801003524); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2018
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 600 in Delaware → Look up another NPI →
Verify Katelyn Gregory in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDelaware Board of Medical Licensure and Discipline
Search for license C2-0024050Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% more Medicare Part D claims than the average internal medicine physician in 2024
3,732 Medicare Part D claims for 615 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 26 claims were for opioids.
Most prescribed
- Atorvastatin Calcium318 claims
- Amlodipine Besylate242 claims
- Levothyroxine Sodium183 claims
- Losartan Potassium164 claims
- Rosuvastatin Calcium155 claims
- Omeprazole140 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.
Bills Medicare through one group practice
- Lancaster General Medical GroupLititz, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katelyn Gregory among 600 internal medicine physician records in Delaware
Katelyn Gregory, DO is one of 600 internal medicine physician records with a practice address in Delaware. 83% 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 70% of them.
- NPI issued2018 · 70% of these records are older, 28% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2018 · median 2008 among the 414 with a school on file
- Record last updated2024 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
107 internal medicine physician records list a practice address in Wilmington
They are 107 of the 6,291 NPPES records with a practice address in Wilmington, and 600 internal medicine physician records in Delaware.
All 600 in Delaware → Every provider in Wilmington → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Allison Evans, M.D.Wilmington, DE 198071558635714
- Katelyn FritzgesWilmington, DE 198071922428044
- Mai LamWilmington, DE 198071487394516
- Timothy Langan, M.D.Greenville, DE 198071891771911
- Meaghan Roszyk, DOWilmington, DE 198071851970933
- Nicholas Sarlis, MDGreenville, DE 198071639978810
- Mart Amick, MDWilmington, DE 198081942209143
- Franklin Ampadu, M.D.Wilmington, DE 198081245236843
Common questions
What is Katelyn Gregory, DO's NPI number?
Katelyn Gregory, DO's National Provider Identifier (NPI) is 1265936975, issued on Mar 19, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Katelyn Gregory, DO located?
The NPPES record lists a practice address at 3506 Kennett Pike FL 2, Wilmington, DE, 19807. Phone: (302) 661-3400. Providers update this record themselves, so call before visiting.
How can I verify Katelyn Gregory, DO's license?
NPPES lists Delaware license number C2-0024050, as entered by the provider. Search the Delaware Board of Medical Licensure and Discipline at https://delpros.delaware.gov/OH_VerifyLicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Katelyn Gregory, DO prescribe under Medicare Part D?
In 2024, Katelyn Gregory, DO had 3,732 Medicare Part D claims for 615 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.