Marcia Gina C. Castro, MD
Internal Medicine Physician · Wilmington, DE
Marcia Gina C. Castro, MD is an internal medicine physician with a practice address in Wilmington, Delaware, and NPI 1407934789, issued on Nov 2, 2006. Check the license (Delaware C10006460, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Marcia Gina C. Castro
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- C10006460 DE
Self-reported in NPPES; status is on the state search - Practice location
- 2055 Limestone RD, Wilmington, DE 19808
- Phone
- (302) 999-8169
- Enumerated
- Nov 2, 2006
- Record last updated
- May 29, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (302) 999-8190
- Medicaid ID
- 0001179401 DE
- Medicare enrollment
- Enrolled (PECOS I20050526000296); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 600 in Delaware → Look up another NPI →
Also registered at 2055 Limestone RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Franklin Ampadu, M.D.Internal Medicine Physician1245236843
- Genevieve Aucoin, MA, MT-BC, LACMHMental Health Counselor1225924301
- Connie Bryner, C.HTSpecialist1831757814
- Dennis Carradin, MED., LPCMH, BCETSMental Health Counselor1952515454
- Jose Marciano Castro, MDInternal Medicine Physician1083792352
- Patricia Daly, LCSWClinical Social Worker1225131915
Verify Marcia Gina C. Castro 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 C10006460Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.5 times the Medicare Part D claims of the average internal medicine physician in 2024
11,265 Medicare Part D claims for 573 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 445 claims were for opioids.
Most prescribed
- Atorvastatin Calcium913 claims
- Amlodipine Besylate497 claims
- Omeprazole429 claims
- Levothyroxine Sodium397 claims
- Losartan Potassium285 claims
- Albuterol Sulfate Hfa277 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: $3,334.79
136 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 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
- First State Medical AssociatesWilmington, DE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marcia Gina C. Castro among 600 internal medicine physician records in Delaware
Marcia Gina C. Castro, MD 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 68% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1993 · median 2008 among the 414 with a school on file
- Record last updated2008 · 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
- Mart Amick, MDWilmington, DE 198081942209143
- Franklin Ampadu, M.D.Wilmington, DE 198081245236843
- James Damour, M.D.Wilmington, DE 198081700884061
- Stuart Felzer, MDWilmington, DE 198081508804402
- Robert Kopecki, DOWilmington, DE 198081326047796
- David Maged, MDWilmington, DE 198081124028808
- Victoria Mawn, MDWilmington, DE 198081932108305
- Andrew Myers, MDWilmington, DE 198081477566446
Common questions
What is Marcia Gina C. Castro, MD's NPI number?
Marcia Gina C. Castro, MD's National Provider Identifier (NPI) is 1407934789, issued on Nov 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marcia Gina C. Castro, MD located?
The NPPES record lists a practice address at 2055 Limestone RD, Wilmington, DE, 19808. Phone: (302) 999-8169. Providers update this record themselves, so call before visiting.
How can I verify Marcia Gina C. Castro, MD's license?
NPPES lists Delaware license number C10006460, 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 Marcia Gina C. Castro, MD prescribe under Medicare Part D?
In 2024, Marcia Gina C. Castro, MD had 11,265 Medicare Part D claims for 573 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.