Mark Stephen Trochimowicz, M.D.
Family Medicine Physician · New Castle, DE
Mark Stephen Trochimowicz, M.D. is a family medicine physician with a practice address in New Castle, Delaware, and NPI 1447257498, issued on Jul 6, 2005. Check the license on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Mark Stephen Trochimowicz
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 25MA07769900 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 400 South St, New Castle, DE 19720
- Phone
- (302) 325-2309
- Enumerated
- Jul 6, 2005
- Record last updated
- Sep 21, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (302) 325-6365
- Medicare enrollment
- Enrolled (PECOS I20101115000722); accepts Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 2001
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 518 in Delaware → Look up another NPI →
Also registered at 400 South St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Audrey Collins, GNPGerontology Nurse Practitioner1114239142
- Joanne Viola, M.D.Family Medicine Physician1245386770
Verify Mark Stephen Trochimowicz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDelaware Board of Medical Licensure and DisciplineCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average family medicine physician in 2024
478 Medicare Part D claims for 100 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 19 claims were for opioids.
Most prescribed
- Gabapentin29 claims
- Atorvastatin Calcium25 claims
- Metoprolol Succinate24 claims
- Rosuvastatin Calcium18 claims
- Montelukast Sodium16 claims
- Duloxetine Hcl15 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: $24.12
1 payment: food and beverage; the largest payer was Abbott Laboratories. The 55,478 providers of this specialty with any payment received $902.55 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 InitiativesWilmington, DE
- Christiana Care Health Services IncWilmington, DE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Stephen Trochimowicz among 518 family medicine physician records in Delaware
Mark Stephen Trochimowicz, M.D. is one of 518 family medicine physician records with a practice address in Delaware. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 85% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2001 · median 2002 among the 323 with a school on file
- Record last updated2012 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
16 family medicine physician records list a practice address in New Castle
They are 16 of the 766 NPPES records with a practice address in New Castle, and 518 family medicine physician records in Delaware.
All 518 in Delaware → Every provider in New Castle → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Sridevi Donepudi, M.D.New Castle, DE 197201629073606
- David Driban, MDNew Castle, DE 197201003892423
- Marita Fallorina, M.D.New Castle, DE 197201417918897
- Maria Mancuso, M.D.New Castle, DE 197201013022391
- Joelle Mengang, MDNew Castle, DE 197201629389184
- Gregory Papa, D.O.New Castle, DE 197201730242397
- Sharon Petty, MDNew Castle, DE 197201285055780
- Kyla-Gaye Pinnock, MDNew Castle, DE 197201376106948
Common questions
What is Mark Stephen Trochimowicz, M.D.'s NPI number?
Mark Stephen Trochimowicz, M.D.'s National Provider Identifier (NPI) is 1447257498, issued on Jul 6, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark Stephen Trochimowicz, M.D. located?
The NPPES record lists a practice address at 400 South St, New Castle, DE, 19720. Phone: (302) 325-2309. Providers update this record themselves, so call before visiting.
How can I verify Mark Stephen Trochimowicz, M.D.'s license?
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 Mark Stephen Trochimowicz, M.D. prescribe under Medicare Part D?
In 2024, Mark Stephen Trochimowicz, M.D. had 478 Medicare Part D claims for 100 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.