Physician

Arley Diaz, MD

According to 2025 Medicare claims, Arley Diaz, MD (NPI: 1093706525) practices nephrology in the Amherst Town-Northampton, MA market, with the plurality of this provider's patient population coming from Hampshire, MA. This provider's primary affiliated billing organization is KIDNEY CARE AND TRANSPLANT SERVICES OF NEW ENGLAND, PC (NPI: 1598202558; TIN: 815130089) and primary practice location at 01060-4278. Diaz is affiliated with the Pioneer Valley Accountable Care, LLC (ACO ID: A5040), participating under the MSSP model.

Diaz's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 880 traditional Medicare patients, billed 4,269 HCPCS/CPT codes, and received $254,909 in Medicare payments. The top billing code was 99223 (Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes). Part D data shows 2,718 prescription claims across 473 beneficiaries totaling $394,337 in drug costs, led by Jardiance (Empagliflozin). DME data shows 29 claims. No Open Payments records. 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 did not follow a clear longitudinal pattern. Concurrently, Part D prescription costs did not follow a clear longitudinal pattern. In contrast, DME billing represents a smaller volume and fell sharply in recent years, from $0 to $0.

Part B Carrier Billing Trend

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

Year	Patients	Clm Lines	Payment
2015	973	9,579	$247,718
2016	949	14,928	$285,051
2017	781	14,492	$238,716
2018	658	26,181	$258,445
2019	686	34,791	$305,960
2020	771	32,333	$365,628
2021	788	24,003	$404,445
2022	782	9,371	$313,551
2023	801	3,620	$254,319
2024	880	4,269	$254,909

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	232	1,807	$106,747
2016	275	2,279	$265,144
2017	275	1,959	$405,289
2018	386	2,965	$390,443
2019	419	3,796	$661,391
2020	482	3,697	$620,009
2021	453	3,227	$592,002
2022	444	3,288	$523,649
2023	410	2,759	$505,395
2024	473	2,718	$394,337

DME Billing Trend

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

Year	Patients	Claims	Payment
2015	N/R	22	$3,877
2016	N/R	N/R	N/R
2017	N/R	N/R	N/R
2018	118	623	$72,499
2019	169	1,133	$125,072
2020	118	725	$51,713
2021	28	94	$5,811
2022	N/R	N/R	N/R
2023	N/R	N/R	N/R
2024	N/R	29	$458

* / # = 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
99223	Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	139	164	$134
99204	New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	107	107	$122
99214	Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	495	750	$67
99232	Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	206	591	$62
G2211	Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's	577	849	$12

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Jardiance	Empagliflozin	142	6,510	$120,630
Farxiga	Dapagliflozin Propanediol	54	3,512	$63,868
Lokelma	Sodium Zirconium Cyclosilicate	61	2,191	$22,834
Ozempic	Semaglutide	12	364	$11,268
Sevelamer Carbonate	Sevelamer Carbonate	84	5,528	$8,370

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
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	15	$282
Q0512	Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period	N	N/R	14	$176

Open Payments Summary

No connected Open Payments records were found for this physician in General Payments, Research Payments, or Ownership / Investment Interests.

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FAQ

What Medicare data is available for Arley Diaz, MD?

Tedicare shows public-source Medicare data for Arley Diaz, MD (NPI 1093706525), 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 Arley Diaz, MD have ACO affiliation data?

Arley Diaz, MD is shown with ACO affiliation data for Pioneer Valley Accountable Care, LLC (MSSP, ACO ID A5040).

What billing organization is linked to Arley Diaz, MD?

Arley Diaz, MD is linked to KIDNEY CARE AND TRANSPLANT SERVICES OF NEW ENGLAND, PC (billing NPI 1598202558) in the available physician profile data.

Does Arley Diaz, MD have Open Payments data?

No connected Open Payments records are shown for this physician in the available General Payments, Research Payments, or Ownership / Investment Interests 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.