Mark J. Corso, M.D.
Specialist · Newark, DE
Mark J. Corso, M.D. is a specialist with a practice address in Newark, Delaware, and NPI 1578635090, issued on Nov 14, 2006. Check the license (Delaware C1-0006956, as entered in NPPES) with the Delaware board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark J. Corso
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- C1-0006956 DE
Self-reported in NPPES; status is on the state search - Practice location
- 4745 Ogletown Stanton RD, Newark, DE 19713
- Phone
- (302) 738-5300
- Enumerated
- Nov 14, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (302) 731-4822
- Medicaid ID
- 10000232980 DE
- Medicare enrollment
- Enrolled (PECOS I20101014001315); accepts Medicare assignment
- Medical or professional school
- Hahnemann University College Of Medicine, 1997
- Entity
- Type 1 · individual
8 nearest specialist records → All 133 in Delaware → Look up another NPI →
Also registered at 4745 Ogletown Stanton RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sajjad Ahmad, MDPulmonary Disease Physician1235301276
- Joe Allison, PA-CSurgical Physician Assistant1184754483
- Michael Axe, MDSports Medicine (Orthopaedic Surgery) Physician1578534558
- Mehdi Balakhani, M.D., D.D.S., PASpecialist1831194224
- Stefanie Barnes, CNMMidwife1184064537
- Julia Bergeman, PA-CPhysician Assistant1194329854
Verify Mark J. Corso in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Delaware board licenses this profession
Search for license C1-0006956Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10% fewer Medicare Part D claims than the average specialist in 2024
1,240 Medicare Part D claims for 359 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Omeprazole558 claims
- Mesalamine92 claims
- Esomeprazole Magnesium87 claims
- Famotidine65 claims
- Dicyclomine Hcl42 claims
- Ursodiol42 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: $645.39
27 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 5,844 providers of this specialty with any payment received $4,760.79 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 2 group practices
- Christiana Care Health Services IncNewark, DE
- Delaware Center For Digestive Care LLCNewark, DE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark J. Corso among 133 specialist records in Delaware
Mark J. Corso, M.D. is one of 133 specialist records with a practice address in Delaware. 32% 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 15% of them.
- NPI issued2006 · 15% of these records are older, 53% newer
- In a Medicare fileYes · 32% of these records are
- In the CMS Doctors and Clinicians fileYes · 22% of these records are
- Graduated1997 · median 1990 among the 29 with a school on file
- Record last updated2007 · 88% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in Delaware
There are 133 specialist records in Delaware.
All 133 in Delaware → Every provider in Newark → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Mehdi Balakhani, M.D., D.D.S., PANewark, DE 197131831194224
- Rosemarie Ciarrocchi, PA-CNewark, DE 197131518962497
- Kieran ConnollyNewark, DE 197131700828332
- Matthew Eppley, MDNewark, DE 197131467441766
- David Fink, M.D.Newark, DE 197131255338844
- Grace Goracci, MDNewark, DE 197131891794178
- Neil Hockstein, M.D.Newark, DE 197131831131317
- Siamak Samii, MDNewark, DE 197131699773853
Common questions
What is Mark J. Corso, M.D.'s NPI number?
Mark J. Corso, M.D.'s National Provider Identifier (NPI) is 1578635090, issued on Nov 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark J. Corso, M.D. located?
The NPPES record lists a practice address at 4745 Ogletown Stanton RD, Newark, DE, 19713. Phone: (302) 738-5300. Providers update this record themselves, so call before visiting.
How can I verify Mark J. Corso, M.D.'s license?
NPPES lists Delaware license number C1-0006956, as entered by the provider. Search the Delaware board that licenses this profession; the NPPES record confirms identity only.
How much does Mark J. Corso, M.D. prescribe under Medicare Part D?
In 2024, Mark J. Corso, M.D. had 1,240 Medicare Part D claims for 359 beneficiaries; the average among specialist prescribers was 1,380. 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.