Doctor profile · Federal record
Dr. Eleni Nackos, MD
Hematology & Oncology Physician (CMS: Hematology/Oncology) · Hematology & Oncology Physician · Westbrook, ME
- NPI 1023339819
- Accepts Medicare
- 16 yrs in practice
- Licensed in 2 states
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 6 locations .
- Primary practice
-
11 Rock Row Ste 320
Westbrook, ME 040924877
(207) 303-3300
fax (207) 250-2139 - Additional location
-
105 Topsham Fair Mall RD Unit 1
Topsham, ME 04086
fax (207) 250-2137 - Additional location
-
11 Rock Row Ste 120
Westbrook, ME 040924877 - Additional location
-
11 Rock Row Ste 150
Westbrook, ME 040924877 - Additional location
-
2 Independence Dr
Kennebunk, ME 040436078
fax (207) 250-2144 - Additional location
-
155 Borthwick Ave Ste C
Portsmouth, NH 038017156
(603) 828-0100
fax (603) 828-0111 - Mailing address
-
Po Box 911
Brattleboro, VT 053020911
Show 3 more locations
Credentials & registration
- NPI registered
- June 2010 — 16 yrs on file
- Profile last updated
- January 23, 2026
- Year of graduation
- 2010 — 16 yrs since
- Specialty taxonomy
- 207RH0003X — NUCC code
- State licenses (2)
- Maine #MD21087 · New Hampshire #20349
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1023339819. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
8,191
Distinct HCPCS
10
Medicare allowed
$234,914
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J0897 |
Injection, denosumab, 1 mg | 2,340 | 17 | $23 | |
J1100 |
Injection, dexamethasone sodium phosphate, 1 mg | 706 | 28 | $0 | |
J9395 |
Injection, fulvestrant, 25 mg | 630 | 14 | $11 | |
80053 |
Blood test, comprehensive group of blood chemicals | 629 | 284 | $10 | |
85025 |
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 621 | 277 | $8 | |
36415 |
Insertion of needle into vein for collection of blood sample | 521 | 273 | $8 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 461 | 221 | $126 | |
J1626 |
Injection, granisetron hydrochloride, 100 mcg | 460 | 15 | $0 | |
86300 |
Immunologic analysis for detection of tumor antigen, quantitative; ca 15-3 | 242 | 126 | $20 | |
96413 |
Administration of chemotherapy into vein, 1 hour or less | 192 | 49 | $132 |
In context: peer comparison
Among 6 peers in Westbrook Hematology & Oncology Physician, average services per provider: 1,075. This provider delivers 7.6× the peer median.Open Payments
Industry payments received
All-time total
$3,485
Transactions
6
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Pfizer INC. | 2 | $3,375.00 | |
| Abbvie INC. | 2 | $58.79 | |
| Daiichi Sankyo INC. | 2 | $51.48 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,120
Patients
301
Total drug cost
$1,509,100
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Letrozole | Generic | 362 | 125 | $13,510 |
| Anastrozole | Generic | 266 | 89 | $8,212 |
| Tamoxifen Citrate | Generic | 135 | 50 | $5,636 |
| Exemestane | Generic | 75 | 26 | $27,333 |
| Ibrance (Palbociclib) | Brand | 55 | 11 | $879,383 |
| Xarelto (Rivaroxaban) | Brand | 39 | 0 | $25,419 |
| Alendronate Sodium | Generic | 31 | 0 | $345 |
| Verzenio (Abemaciclib) | Brand | 26 | 0 | $319,349 |
| Gabapentin | Generic | 25 | 0 | $477 |
| Tukysa (Tucatinib) | Brand | 22 | 0 | $210,734 |
Hospital affiliations
Frequently asked questions
What is Dr. Eleni Nackos's medical specialty?
Dr. Eleni Nackos practices Hematology & Oncology Physician in Westbrook, ME.
Where does Dr. Eleni Nackos practice?
Dr. Eleni Nackos practices at 11 Rock Row Ste 320, Westbrook, ME 040924877. Office phone: 2073033300.
What is Dr. Eleni Nackos's NPI?
Dr. Eleni Nackos's National Provider Identifier (NPI) is 1023339819, issued by NPPES.
Does Dr. Eleni Nackos accept Medicare assignment?
Yes. Dr. Eleni Nackos accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Eleni Nackos commonly perform?
Top Medicare-reported procedures in 2023: Injection, denosumab, 1 mg (HCPCS J0897); Injection, dexamethasone sodium phosphate, 1 mg (HCPCS J1100); Injection, fulvestrant, 25 mg (HCPCS J9395). Source: CMS Medicare Physician & Other Practitioners file.