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Gregory Berk, MD
NPI 1306208905 · Hematology & Oncology Physician · Dover, MA
Gregory Berk, MD is a Hematology & Oncology Physician provider in Dover, MA (NPI 1306208905).
Provider details
- NPI number
- 1306208905
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- C51814 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Established profile(72/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
133 Claybrook Rd
Dover, MA 02030-2116
Phone: (925) 719-3531
Street-level locationGet directions
Mailing address
133 Claybrook Rd
Dover, MA 02030-2116
Registry dates
- Enumerated
- 2016-03-23
- Last updated
- 2016-03-23
Frequently asked questions
- What is Gregory Berk's NPI number?
- Gregory Berk's National Provider Identifier (NPI) is 1306208905, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Berk's specialty?
- Gregory Berk is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Berk located?
- Gregory Berk's practice location on file with NPPES is 133 Claybrook Rd, Dover, MA 02030-2116.
- What is Gregory Berk's phone number?
- The practice phone number listed in the NPPES registry for Gregory Berk is (925) 719-3531.
- Is Gregory Berk's NPI active?
- Yes — Gregory Berk's NPI (1306208905) is active in the NPPES registry as of the last update on 2016-03-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.