Doctor profile · Federal record
Dr. John Lahaniatis, M.D.
Radiation Oncology Physician (CMS: Radiation Oncology) · Dover, DE
- NPI 1326023102
- Accepts Medicare
- 31 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
640 S State St Fl 1
Dover, DE 199013530
(302) 674-4401
fax (302) 674-4129 - Additional location
-
100 Wellness Way
Milford, DE 199634364
(302) 430-5303
fax (302) 430-5023 - Mailing address
-
640 S State Street, Mail Code 3055
Dover, DE 199013530
Credentials & registration
- NPI registered
- December 2005 — 21 yrs on file
- Profile last updated
- August 2, 2022
- Year of graduation
- 1995 — 31 yrs since
- Specialty taxonomy
- 2085R0001X — NUCC code
- State license (1)
- Delaware #C1-0005989
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1326023102. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
3,354
Distinct HCPCS
10
Medicare allowed
$240,066
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
G6002 |
Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy | 1,304 | 128 | $21 | |
77300 |
Calculation of radiation therapy dose | 346 | 103 | $33 | |
77427 |
Radiation treatment management, 5 treatment sessions | 334 | 121 | $193 | |
77334 |
Design and construction of complex radiation treatment device | 208 | 98 | $60 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 208 | 152 | $66 | |
99441 |
Telephone medical discussion with physician, 5-10 minutes | 203 | 161 | $35 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 108 | 108 | $134 | |
77263 |
Complex radiation therapy planning | 96 | 94 | $164 | |
77338 |
Design and construction of radiation treatment device for high precision radiation therapy | 82 | 59 | $228 | |
99442 |
Telephone medical discussion with physician, 11-20 minutes | 82 | 66 | $66 |
In context: peer comparison
Among 3 peers in Dover Radiation Oncology Physician, average services per provider: 139. This provider delivers 24× the peer median.Open Payments
Industry payments received
All-time total
$22
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Novartis Pharmaceuticals Corporation | 1 | $21.63 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
368
Patients
82
Total drug cost
$10,493
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 59 | 20 | $754 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 46 | 17 | $2,407 |
| Tamsulosin Hcl | Generic | 45 | 17 | $1,300 |
| Pantoprazole Sodium | Generic | 33 | 0 | $536 |
| Ondansetron Hcl | Generic | 24 | 0 | $192 |
| Lidocaine Hcl Viscous (Lidocaine Hcl) | Brand | 22 | 15 | $552 |
| Alendronate Sodium | Generic | 21 | 0 | $58 |
| Dexamethasone | Generic | 19 | 13 | $481 |
| Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) | Brand | 17 | 0 | $888 |
| Letrozole | Generic | 15 | 0 | $860 |
Hospital affiliations
Frequently asked questions
What is Dr. John Lahaniatis's medical specialty?
Dr. John Lahaniatis practices Radiation Oncology Physician in Dover, DE.
Where does Dr. John Lahaniatis practice?
Dr. John Lahaniatis practices at 640 S State St Fl 1, Dover, DE 199013530. Office phone: 3026744401.
What is Dr. John Lahaniatis's NPI?
Dr. John Lahaniatis's National Provider Identifier (NPI) is 1326023102, issued by NPPES.
Does Dr. John Lahaniatis accept Medicare assignment?
Yes. Dr. John Lahaniatis accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Lahaniatis commonly perform?
Top Medicare-reported procedures in 2023: Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (HCPCS G6002); Calculation of radiation therapy dose (HCPCS 77300); Radiation treatment management, 5 treatment sessions (HCPCS 77427). Source: CMS Medicare Physician & Other Practitioners file.