Jack C. Horowitz, MD
Emergency Medicine Physician · Wilmington, DE
Jack C. Horowitz, MD is an emergency medicine physician with a practice address in Wilmington, Delaware, and NPI 1982652137, issued on May 4, 2006. Check the license (Delaware C10004411, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Jack C. Horowitz
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- C10004411 DE
Self-reported in NPPES; status is on the state search - Practice location
- 2700 Silverside RD, Wilmington, DE 19810
- Phone
- (302) 225-6868
- Enumerated
- May 4, 2006
- Record last updated
- Feb 28, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicaid ID
- 000630001 DE
- Medicare enrollment
- Enrolled (PECOS I20110610000509); accepts Medicare assignment
- Medical or professional school
- University Of Connecticut School Of Medicine, 1991
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 243 in Delaware → Look up another NPI →
Also registered at 2700 Silverside RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Wayne Garraway, DOGeneral Practice Physician1871660845
Verify Jack C. Horowitz 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 C10004411Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% fewer Medicare Part D claims than the average emergency medicine physician in 2024
145 Medicare Part D claims for 107 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Prednisone34 claims
- Amoxicillin-Clavulanate Potass16 claims
- Albuterol Sulfate Hfa14 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.
The MIPS final score for 2023 (Medicare payment program): 0 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Newark Emergency CenterNewark, DE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jack C. Horowitz among 243 emergency medicine physician records in Delaware
Jack C. Horowitz, MD is one of 243 emergency 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 under 1% of them.
- NPI issued2006 · under 1% of these records are older, 65% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 51% of these records are
- Graduated1991 · median 2010 among the 123 with a school on file
- Record last updated2011 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Delaware
There are 243 emergency medicine physician records in Delaware.
All 243 in Delaware → Every provider in Wilmington → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Dean Debroekert, MDWilmington, DE 198081265473318
- Joseph RazianoWilmington, DE 198061891734174
- Janice Balas, MDWilmington, DE 198051851322564
- Richard Lucas, MDWilmington, DE 198051598709859
- Evan Lynn, MDWilmington, DE 198051437786712
- Lisa Maercks-Nagle, M.D.Wilmington, DE 198051942289830
- Jason Matthews, M.D.Wilmington, DE 198051346474301
- Wendy Ottenbacher, M.D.Wilmington, DE 198051114907367
Common questions
What is Jack C. Horowitz, MD's NPI number?
Jack C. Horowitz, MD's National Provider Identifier (NPI) is 1982652137, issued on May 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jack C. Horowitz, MD located?
The NPPES record lists a practice address at 2700 Silverside RD, Wilmington, DE, 19810. Phone: (302) 225-6868. Providers update this record themselves, so call before visiting.
How can I verify Jack C. Horowitz, MD's license?
NPPES lists Delaware license number C10004411, 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 Jack C. Horowitz, MD prescribe under Medicare Part D?
In 2024, Jack C. Horowitz, MD had 145 Medicare Part D claims for 107 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Jack C. Horowitz, MD's MIPS final score?
The 2023 MIPS final score is 0 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.