DR. GEORGIOS DEFTEREOS (M.D.) – Anatomic Pathology & Clinical Pathology Physician, NPI 1225384456
Anatomic Pathology & Clinical Pathology Physician
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Profile Insights
NPPES metrics only — not quality of care.
369 PATHOLOGY in WA
Provider Addresses for DR. GEORGIOS DEFTEREOS (M.D.)
1959 NE PACIFIC ST NW 120
SEATTLE, WA 981957110
Phone: (206) 598-7543
Type: Mailing
325 9TH AVE
ROOM 2NJ252
SEATTLE, WA 981042420
Phone: (206) 744-3163
Type: Location
1825 4TH STREET, BOX 4034
SAN FRANCISCO, CA 94143
Phone: (415) 353-7043
Fax: (415) 353-7676
Type: Mailing
1825 4TH STREET
SAN FRANCISCO, CA 94143
Phone: (415) 353-7043
Fax: (415) 353-7676
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 27 Open Payments records for all available years, with a total value of $32,011.
Total Amount is formed as General ($32,011) + Research ($0) + Ownership ($0) = $32,011.
Last reported payment date: 2024-12-08 • Largest payer in this snapshot: Agilent Technologies, Inc. ($30,661).
Total Amount
$32,011
General + Research + Ownership
Payments
27
Total payment records
General Amount
$32,011
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-08
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Agilent Technologies, Inc. | $30,661 |
| PFIZER INC. | $1,350 |
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: 2022-09-26
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 |
|---|---|---|---|---|
| I20220926000457 | I | Pathology | CA | 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 | 215 | 54 | $0 |
| 88112 | Cell examination of specimen, selective cellular enhancement technique | 175 | 168 | $0 |
| 88173 | Evaluation of fine needle aspirate with interpretation and report | 143 | 119 | $0 |
| G0452 | Molecular pathology procedure; physician interpretation and report | 138 | 136 | $0 |
| 88172 | Evaluation of fine needle aspirate | 137 | 110 | $0 |
Insurance plans in this area (ZIP 98195)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| O P H T H A L M O L O G Y | CA | |
| Hospitalist, Internal Medicine | CA | |
| - | CA | |
| - | CA | |
| Physician Assistant | CA | |
| - | CA | |
| - | ID | |
| Diagnostic Radiology | CA | |
| - | MD | |
| Orthopedic Surgery | CA |
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