George Tjionas, MD
NPI 1982946307 · Clinical Pathology Physician · Worcester, MA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
George Tjionas, MD is a Clinical Pathology Physician provider in Worcester, MA (NPI 1982946307).
Provider details
- NPI number
- 1982946307
- Entity type
- Individual
- Primary specialty
- Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 273014 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,071 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 191 | $36 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 179 | $27 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 105 | $36 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 90 | $27 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 77 | $34 |
| Pathology Examination of Tissue Using a Microscope, Moderately Low Complexity88304 | 68 | $11 |
Practice location
Mailing address
Additional practice locations (3)
- 1611 Nw 12th AveMiami, FL 33136-1005Phone: (305) 585-1111
- 1 Innovation DriveBiotech 3 - PathologyWorcester, MA 01605Phone: (508) 334-1000
- 1 Innovation DriveBiotech 3 - PathologyWorcester, MA 01605Phone: (508) 334-1000
Registry dates
- Enumerated
- 2013-03-24
- Last updated
- 2021-03-26
- Certified
- 2021-03-26
Frequently asked questions
- What is George Tjionas's NPI number?
- George Tjionas's National Provider Identifier (NPI) is 1982946307, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is George Tjionas's specialty?
- George Tjionas is listed in the NPPES registry with a primary specialty of Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is George Tjionas located?
- George Tjionas's practice location on file with NPPES is 55 Lake Ave N, Worcester, MA 01655-0002.
- What is George Tjionas's phone number?
- The practice phone number listed in the NPPES registry for George Tjionas is (508) 793-6100.
- Does George Tjionas accept Medicare?
- George Tjionas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is George Tjionas's NPI active?
- Yes — George Tjionas's NPI (1982946307) is active in the NPPES registry as of the last update on 2021-03-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.