GEORGE A. TJIONAS (MD) – Clinical Pathology Physician, NPI 1982946307
Clinical Pathology Physician
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Profile Insights
NPPES metrics only — not quality of care.
799 PATHOLOGY in MA
Provider Addresses for GEORGE A. TJIONAS (MD)
1 Innovation Drive
Biotech 3 - Pathology
Worcester, MA 01605
Phone: (508) 334-1000
Type: Location
1611 NW 12th Ave
Miami, FL 331361005
Phone: (305) 585-1111
Type: Location
PO BOX 415348
BOSTON, MA 022415348
Phone: (800) 225-8885
Fax: (508) 334-1977
Type: Mailing
55 LAKE AVE N
WORCESTER, MA 016550002
Phone: (508) 793-6100
Fax: (508) 793-6110
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2018-05-21
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20180521002013 | I | Pathology | MA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 88341 | Special stained specimen slides to examine tissue, each additional procedure | 419 | 85 | $0 |
| 88305 | Pathology examination of tissue using a microscope, intermediate complexity | 318 | 218 | $0 |
| 88342 | Special stained specimen slides to examine tissue, initial procedure | 169 | 128 | $0 |
| 88307 | Pathology examination of tissue using a microscope, moderately high complexity | 105 | 67 | $0 |
| 88304 | Pathology examination of tissue using a microscope, moderately low complexity | 86 | 79 | $0 |
Insurance plans in this area (ZIP 01605)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Certified Registered Nurse Anesthetist (Crna) | MA | |
| - | MA | |
| - | MA | |
| Family Practice | MA | |
| Physician Assistant | MA | |
| Pulmonary Disease, Critical Care (Intensivists), Allergy/Immunology | MA | |
| - | MA | |
| - | MA | |
| Internal Medicine | MA | |
| Nurse Practitioner | MA |
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