Gres Karim, MD
Gastroenterology Physician · Summit, NJ
Gres Karim, MD is a gastroenterology physician with a practice address in Summit, New Jersey, and NPI 1043831928, issued on May 1, 2020. Check the license (New Jersey 25MA13085300, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Gres Karim
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 25MA13085300 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 33 Overlook RD Ste 201, Summit, NJ 07901
- Phone
- (908) 522-5040
- Enumerated
- May 1, 2020
- Record last updated
- Jul 21, 2026
- Fax
- (908) 522-5041
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 735 in New Jersey → Look up another NPI →
Also registered at 33 Overlook RD Ste 201
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Adwoah Bonsu, ANP-BCAdult Health Nurse Practitioner1104166420
- Joseph Caputo, M.D.Urology Physician1164817631
- Chen Chu, APNNurse Practitioner1760232318
- Arshish Dua, M.D.Gastroenterology Physician1710372321
- Christine Edugene, PASurgical Physician Assistant1427350982
- Emily Gray-Voorhees, PA-CSurgical Physician Assistant1124149737
Verify Gres Karim in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MA13085300Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average gastroenterology physician in 2024
126 Medicare Part D claims for 73 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Sod Sulf-Potass Sulf-Mag Sulf25 claims
- Pantoprazole Sodium23 claims
- Peg 3350-Electrolyte16 claims
- Omeprazole14 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.
Gres Karim among 735 gastroenterology physician records in New Jersey
Gres Karim, MD is one of 735 gastroenterology physician records with a practice address in New Jersey. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 99% of them.
- NPI issued2020 · 99% of these records are older, under 1% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileNo · 77% of these records are
- Record last updated2026 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in New Jersey
There are 735 gastroenterology physician records in New Jersey.
All 735 in New Jersey → Every provider in Summit → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Arshish Dua, M.D.Summit, NJ 079011710372321
- Saad Habba, MDSummit, NJ 079011649270976
- Sanjay Salgado, M.D.Summit, NJ 079011861874174
- Ari YoungSummit, NJ 079011609220763
- Adam Barrison, MDBerkeley Heights, NJ 079221669473328
- Joseph Belladonna, MDBerkeley Heights, NJ 079221871594937
- Tamir Ben Menachem, MDBerkeley Heights, NJ 079221538246509
- William BrownBerkeley Heights, NJ 079221821012196
Common questions
What is Gres Karim, MD's NPI number?
Gres Karim, MD's National Provider Identifier (NPI) is 1043831928, issued on May 1, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Gres Karim, MD located?
The NPPES record lists a practice address at 33 Overlook RD Ste 201, Summit, NJ, 07901. Phone: (908) 522-5040. Providers update this record themselves, so call before visiting.
How can I verify Gres Karim, MD's license?
NPPES lists New Jersey license number 25MA13085300, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gres Karim, MD prescribe under Medicare Part D?
In 2024, Gres Karim, MD had 126 Medicare Part D claims for 73 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.