Grabias Medical Group PC
NPI 1578570537 · Internal Medicine Physician · Webster, MA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grabias Medical Group PC is a Internal Medicine Physician organization in Webster, MA (NPI 1578570537).
Provider details
- NPI number
- 1578570537
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Piotr Grabias, Owner Mgr(508) 949-1988
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
Mailing address
Registry dates
- Enumerated
- 2006-08-02
- Last updated
- 2020-08-22
Frequently asked questions
- What is Grabias Medical Group PC's NPI number?
- Grabias Medical Group PC's National Provider Identifier (NPI) is 1578570537, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Grabias Medical Group PC?
- Grabias Medical Group PC is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Grabias Medical Group PC located?
- Grabias Medical Group PC's practice location on file with NPPES is 340 Thompson Rd, Webster, MA 01570.
- What is Grabias Medical Group PC's phone number?
- The practice phone number listed in the NPPES registry for Grabias Medical Group PC is (508) 949-1988.
- Does Grabias Medical Group PC accept Medicare?
- Grabias Medical Group PC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Grabias Medical Group PC?
- The authorized official listed on Grabias Medical Group PC's NPPES record is Piotr Grabias, Owner Mgr. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Grabias Medical Group PC's NPI active?
- Yes — Grabias Medical Group PC's NPI (1578570537) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.