Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

GRES KARIM MD
NPI 1043831928
Internal Medicine - Gastroenterology in Summit, NJ

Q: What is Gres Karim's NPI number?

The NPI number for Gres Karim is 1043831928. It was assigned to this individual provider in the NPPES registry on May 1, 2020.

Q: What is Gres Karim's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Gres Karim was last updated on July 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 36 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since May 01, 2020PECOS Enrolled

33 OVERLOOK RD STE 201, SUMMIT, NJ 07901(908) 522-5040(908) 522-5041 Get Directions Write a Review

NPPES record last updated: July 21, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

On this page

About Gres Karim Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GRES KARIM MD (NPI 1043831928) is an individual gastroenterology provider in Summit, New Jersey, licensed in New Jersey (25MA13085300) and active in the NPI registry since May 2020. She is enrolled in Medicare PECOS and maintains a secondary practice location in Westfield.

NPPES Registry Identity

NPI1043831928

Entity TypeIndividualFemale

Primary Taxonomy207RG0100X

Provider Legal NameGRES KARIMCredential: MD

Location Address33 OVERLOOK RD STE 201Summit, NJ 07901-3562

Mailing AddressPo Box 416457Boston, MA 02241-6457 · (844) 362-1735 · Fax (973) 290-7495

Phone(908) 522-5040

Fax(908) 522-5041

Sole ProprietorNo

Enumeration DateMay 1, 2020

Last NPPES UpdateJuly 21, 2026

NPPES CertifiedJuly 21, 2026

✔ NPI 1043831928 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in NJ · 25MA13085300

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

33 OVERLOOK RD STE 201, Summit, NJ 07901

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Secondary Practice Location 1

Location 1525 Central Ave Ste CWestfield, NJ 07090-2545 · Phone (908) 522-5040 · Fax (908) 522-5041

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gres Karim Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 07901 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$144.86 typical visit price

range $63.84 – $190.92

Typical copayment $36.21 (range $15.96 – $47.73)

Most-billed visit code 99204

Established Patient

$111.57 typical visit price

range $20.97 – $155.92

Typical copayment $27.89 (range $5.24 – $38.98)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 11

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JENNIFER LILLIAN O'NEILL

Nurse Practitioner