GREGORY IVAN BERK MD
NPI 1306208905
Internal Medicine - Hematology & Oncology in Dover, MA

Q: What is Gregory Berk's NPI number?

The NPI number for Gregory Berk is 1306208905. It was assigned to this individual provider in the NPPES registry on March 23, 2016.

Q: What is Gregory Berk's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Q: When was this NPI record last updated?

The NPPES record for Gregory Berk was last updated on March 23, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years 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 March 23, 2016

133 CLAYBROOK RD, DOVER, MA 02030(925) 719-3531 Get Directions Write a Review

NPPES record last updated: March 23, 2016. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Gregory Ivan Berk Md NPPES

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

GREGORY IVAN BERK MD (NPI 1306208905) is an individual hematology & oncology provider in Dover, Massachusetts, licensed in California (C51814) and active in the NPI registry since March 2016.

NPPES Registry Identity

NPI1306208905

Entity TypeIndividualMale

Primary Taxonomy207RH0003X

Provider Legal NameGREGORY IVAN BERKCredential: MD

Location Address133 CLAYBROOK RDDover, MA 02030-2116

Mailing Address133 Claybrook RdDover, MA 02030-2116 · (925) 719-3531

Phone(925) 719-3531

Sole ProprietorYes

Enumeration DateMarch 23, 2016

✔ NPI 1306208905 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

License✔ Licensed in CA · C51814

Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

133 CLAYBROOK RD, Dover, MA 02030

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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gregory Berk's NPI number?

The NPI number for Gregory Berk is 1306208905. It was assigned to this individual provider in the NPPES registry on March 23, 2016.

Where is Gregory Berk located?

Gregory Berk practices at 133 Claybrook Rd, Dover, MA 02030. The listed phone number is (925) 719-3531.

What is Gregory Berk's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

When was this NPI record last updated?

The NPPES record for Gregory Berk was last updated on March 23, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years 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.