JOHN E. LAHANIATIS (M.D.) – Radiation Oncology Physician, NPI 1326023102
Radiation Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
18 RADIATION ONCOLOGY in DE
Provider Addresses for JOHN E. LAHANIATIS (M.D.)
640 S STATE ST, POB 3RD FLOOR
DOVER, DE 199013530
Phone: (302) 480-1688
Fax: (302) 480-9807
Type: Mailing
100 Wellness Way
Milford, DE 199634364
Phone: (302) 430-5303
Fax: (302) 430-5023
Type: Location
640 S STATE STREET
MAIL CODE 3055
DOVER, DE 199013530
Phone: (302) 480-1688
Fax: (302) 480-9807
Type: Mailing
South State Street, Dover, Kent County, Delaware, 19901, United States
DOVER, DE 199013530
Phone: (302) 674-4401
Fax: (302) 674-4129
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 4 Open Payments records for all available years, with a total value of $140.
Total Amount is formed as General ($140) + Research ($0) + Ownership ($0) = $140.
Last reported payment date: 2024-07-10 • Largest payer in this snapshot: Bayer Healthcare Pharmaceuticals Inc. ($83).
Total Amount
$140
General + Research + Ownership
Payments
4
Total payment records
General Amount
$140
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-07-10
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2004-04-29
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 |
|---|---|---|---|---|
| I20040429001051 | I | Radiation Oncology | DE | 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 |
|---|---|---|---|---|
| G6002 | Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy | 1,304 | 128 | $0 |
| 77300 | Calculation of radiation therapy dose | 346 | 103 | $0 |
| 77427 | Radiation treatment management, 5 treatment sessions | 334 | 121 | $0 |
| 77334 | Design and construction of complex radiation treatment device | 208 | 98 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 208 | 152 | $0 |
Insurance plans in this area (ZIP 19901)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| H E M A T O L O G Y/ O N C O L O G Y | DE | |
| - | DE | |
| Family Practice | MI | |
| O B S T E T R I C S/ G Y N E C O L O G Y | DE | |
| Medical Oncology | DE | |
| Physician Assistant | DE | |
| Certified Nurse Midwife (Cnm) | DE | |
| Pediatric Medicine, Family Practice | DE | |
| Nurse Practitioner | DE | |
| Gastroenterology, Internal Medicine | DE |
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