Physician

Gregory H Downer, M.D.

According to 2025 Medicare claims, Gregory Downer, M.D. (NPI: 1285635367) practices nephrology in the Muskegon-Norton Shores, MI market, with the plurality of this provider's patient population coming from Muskegon, MI. This provider's primary affiliated billing organization is WEST MICHIGAN NEPHROLOGY PLLC (NPI: 1235143090; TIN: 382690980) and primary practice location at 49444-1881. Downer is affiliated with the Trinity Health Integrated Care (ACO ID: A3454) and West Michigan Accountable Care Organization, LLC (ACO ID: A4626), participating under the MSSP model.

Downer's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 379 traditional Medicare patients, billed 888 HCPCS/CPT codes, and received $94,779 in Medicare payments. The top billing code was 90960 (Dialysis services, 4 or more physician visits per month (20 years or older)). Part D data shows 1,332 prescription claims across 398 beneficiaries totaling $322,860 in drug costs, led by Farxiga (Dapagliflozin Propanediol). DME data shows 25 claims. Open Payments data shows 1 records totaling $27. 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 from a higher plateau to a lower plateau, from $429,619 to $94,779. Similarly, Part D prescription costs started with an early spike, then settled into a lower baseline, moving from $966,152 to $322,860. In contrast, DME billing represents a smaller volume and started with an early spike, then settled into a lower baseline, moving from $4,012 to $1,079.

Part B Carrier Billing Trend

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

Year	Patients	Clm Lines	Payment
2015	784	3,395	$429,619
2016	789	3,400	$435,533
2017	743	3,532	$444,645
2018	711	3,210	$416,803
2019	719	2,031	$189,271
2020	575	1,753	$199,235
2021	579	1,502	$186,053
2022	432	1,375	$187,623
2023	397	1,147	$149,387
2024	379	888	$94,779

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	545	4,747	$966,152
2016	545	5,262	$1,472,457
2017	558	4,986	$1,469,971
2018	544	3,865	$597,600
2019	483	2,233	$245,780
2020	463	1,865	$191,116
2021	414	1,618	$234,550
2022	405	1,701	$290,971
2023	426	1,601	$321,703
2024	398	1,332	$322,860

DME Billing Trend

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

Year	Patients	Claims	Payment
2015	106	579	$44,631
2016	97	550	$39,895
2017	91	542	$36,753
2018	100	523	$35,901
2019	70	406	$14,217
2020	N/R	152	$5,360
2021	N/R	102	$3,772
2022	N/R	114	$3,510
2023	N/R	79	$1,428
2024	N/R	25	$340

* / # = 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
90960	Dialysis services, 4 or more physician visits per month (20 years or older)	137	193	$245
99222	Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	69	80	$90
99214	Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	150	184	$59
99232	Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	79	258	$56
90935	Hemodialysis procedure with physician evaluation	31	72	$51

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Farxiga	Dapagliflozin Propanediol	102	4,715	$82,261
Jardiance	Empagliflozin	61	2,701	$49,235
Eliquis	Apixaban	26	960	$17,724
Lokelma	Sodium Zirconium Cyclosilicate	45	1,072	$14,370
Sevelamer Carbonate	Sevelamer Carbonate	33	1,620	$9,427

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
J7507	Tacrolimus, immediate release, oral, 1 mg	N	N/R	12	$189
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	13	$150

Open Payments Summary in 2024

Category	Definition	Records	Total Reported Amount	Top Related Entity
General Payments	Reported payment or transfer-of-value amount.	1	$27	Travere Therapeutics, Inc.
Research Payments	Reported research-related payment or transfer-of-value amount.	0	$0	N/R
Ownership / Investment Interests	Reported value of ownership or investment interests.	0	$0	N/R

Explore More Providers

FAQ

What Medicare data is available for Gregory H. Downer, M.D.?

Tedicare shows public-source Medicare data for Gregory H. Downer, M.D. (NPI 1285635367), 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 Gregory H. Downer, M.D. have ACO affiliation data?

Gregory H. Downer, M.D. is shown with ACO affiliation data for Trinity Health Integrated Care (MSSP, ACO ID A3454) and West Michigan Accountable Care Organization, LLC (MSSP, ACO ID A4626).

What billing organization is linked to Gregory H. Downer, M.D.?

Gregory H. Downer, M.D. is linked to WEST MICHIGAN NEPHROLOGY PLLC (billing NPI 1235143090) in the available physician profile data.

Does Gregory H. Downer, M.D. have Open Payments data?

Gregory H. Downer, M.D. has 1 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.