Physician

Eleni Nicole Nackos, MD

According to 2025 Medicare claims, Eleni Nackos, MD (NPI: 1023339819) practices hematology/oncology in the Portland-South Portland, ME market, with the plurality of this provider's patient population coming from Cumberland, ME. This provider's primary affiliated billing organization is MAINE CENTER FOR CANCER MEDICINE & BLOOD DISORDERS, P.A. (NPI: 1205896107; TIN: 010357684) and primary practice location at 04092-4877. Nackos is affiliated with the MaineHealth Accountable Care Organization (ACO ID: A1290) and Beacon Rural Health, LLC (ACO ID: A5614), participating under the MSSP model.

Nackos' data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 406 traditional Medicare patients, billed 65,702 HCPCS/CPT codes, and received $1,382,228 in Medicare payments. The top billing code was 99214 (Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more). Part D data shows 1,754 prescription claims across 373 beneficiaries totaling $3,124,614 in drug costs, led by Ibrance (Palbociclib). DME data shows 48 claims. Open Payments data shows 10 records totaling $15,882. You can download detailed data with all billing codes (2015-2024). For more recent data, please contact us.

Over the past 10 years, this provider's Medicare Part B carrier billing has moved up and down with repeated peaks and valleys, starting at $467,319 and ending at $1,382,228. Concurrently, Part D prescription costs have risen steadily, from $85,312 to $3,124,614. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.

Part B Carrier Billing Trend

Medicare payment trend, with N of patients and claim lines in the table.

Year	Patients	Clm Lines	Payment
2015	N/R	N/R	N/R
2016	174	37,647	$467,319
2017	355	106,054	$1,692,832
2018	347	100,715	$1,529,770
2019	343	95,182	$1,803,242
2020	332	71,214	$1,215,112
2021	535	96,303	$1,733,737
2022	503	76,518	$1,335,226
2023	421	65,085	$1,163,714
2024	406	65,702	$1,382,228

Part D Events Trend

Drug cost trend, with N of patients and prescription claims in the table.

Year	Patients	Claims	Drug Cost
2015	25	107	$85,312
2016	66	317	$450,271
2017	156	885	$792,246
2018	189	966	$1,194,078
2019	217	981	$1,270,360
2020	223	933	$1,083,302
2021	372	1,290	$1,348,451
2022	420	1,494	$1,781,561
2023	335	1,359	$1,715,042
2024	373	1,754	$3,124,614

DME Billing Trend

Medicare payment trend, with N of patients and DME claim records in the table.

Year	Patients	Claims	Payment
2015	N/R	N/R	N/R
2016	N/R	16	$11,198
2017	N/R	42	$14,634
2018	N/R	N/R	N/R
2019	N/R	N/R	N/R
2020	N/R	12	$66
2021	N/R	37	$2,220
2022	N/R	71	$2,535
2023	N/R	56	$9,171
2024	N/R	48	$1,187

* / # = suppressed by CMS; 0 = reported zero; N/R = not reported or blank.

Top 5 Part B carrier billing codes in 2024

By total payments.

Code	Description	Patients	Clm Lines	Total Payment
99214	Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	222	566	$97
86300	Immunologic analysis for detection of tumor antigen, quantitative; ca 15-3	129	271	$20
80053	Blood test, comprehensive group of blood chemicals	282	743	$10
36415	Insertion of needle into vein for collection of blood sample	266	582	$9
85025	Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	276	715	$8

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Ibrance	Palbociclib	96	2,670	$1,484,119
Verzenio	Abemaciclib	74	2,058	$957,473
Calquence	Acalabrutinib Maleate	13	390	$200,794
Trazimera	Trastuzumab-Qyyp	18	378	$46,081
Exemestane	Exemestane	71	5,805	$18,199

Top 5 DME services in 2024

By Total Medicare Payment Amount.

HCPCS Code	HCPCS Description	Supplier Rental Indicator	Total Supplier Beneficiaries	Total Supplier Claims	Total Medicare Payment Amount
J8521	Capecitabine, oral, 500 mg	N	N/R	24	$754
Q0511	Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period	N	N/R	24	$433

Open Payments Summary in 2024

Category	Definition	Records	Total Reported Amount	Top Related Entity
General Payments	Reported payment or transfer-of-value amount.	6	$3,485	PFIZER INC.
Research Payments	Reported research-related payment or transfer-of-value amount.	4	$12,397	PFIZER INC.
Ownership / Investment Interests	Reported value of ownership or investment interests.	0	$0	N/R

Explore More Providers

FAQ

What Medicare data is available for Eleni Nicole Nackos, MD?

Tedicare shows public-source Medicare data for Eleni Nicole Nackos, MD (NPI 1023339819), including provider identity, specialty, market context, Medicare Part B activity, Part D prescribing, DME records, Open Payments where available, billing organization details, and ACO affiliation signals where available. Profile data covers 2015-2024, with current attribution based on 2025 claims where available.

Does Eleni Nicole Nackos, MD have ACO affiliation data?

Eleni Nicole Nackos, MD is shown with ACO affiliation data for MaineHealth Accountable Care Organization (MSSP, ACO ID A1290) and Beacon Rural Health, LLC (MSSP, ACO ID A5614).

What billing organization is linked to Eleni Nicole Nackos, MD?

Eleni Nicole Nackos, MD is linked to MAINE CENTER FOR CANCER MEDICINE & BLOOD DISORDERS, P.A. (billing NPI 1205896107) in the available physician profile data.

Does Eleni Nicole Nackos, MD have Open Payments data?

Eleni Nicole Nackos, MD has 10 connected Open Payments records in the available 2024 summary data.

Can I download physician-level Medicare data from Tedicare?

Yes. Tedicare provides sample physician export data and paid custom physician data exports for research, planning, outreach, and market analysis. Exports can include physician profile fields, market and specialty context, billing organization details, ACO affiliation signals where available, and Medicare utilization data.