Physician

James G Lahti, M.D.

According to 2025 Medicare claims, James Lahti, M.D. (NPI: 1689783086) practices dermatology in the Lake County, IL market, with the plurality of this provider's patient population coming from Lake, IL. This provider's primary affiliated billing organization is DERMATOLOGY PARTNERS OF THE NORTH SHORE LLC (NPI: 1114063591; TIN: 36-4298571) and primary practice location at 60062-7930.

Lahti's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 1,389 traditional Medicare patients, billed 10,217 HCPCS/CPT codes, and received $1,534,500 in Medicare payments. The top billing code was 17311 (Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks). Part D data shows 934 prescription claims across 542 beneficiaries totaling $50,396 in drug costs, led by Mupirocin (Mupirocin). Open Payments data shows 7 records totaling $184. 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 changed little. Concurrently, Part D prescription costs have moved up and down with repeated peaks and valleys, starting at $70,393 and ending at $50,396. 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	1,212	5,347	$1,196,714
2016	1,256	5,406	$1,131,748
2017	1,286	5,494	$1,217,862
2018	1,249	5,712	$1,352,161
2019	1,195	5,600	$1,404,979
2020	1,088	5,025	$1,242,608
2021	1,237	6,781	$1,365,014
2022	1,333	8,091	$1,482,275
2023	1,398	9,485	$1,480,096
2024	1,389	10,217	$1,534,500

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	279	431	$70,393
2016	279	469	$175,850
2017	269	437	$125,836
2018	249	384	$99,598
2019	255	445	$230,938
2020	310	554	$58,822
2021	361	638	$187,213
2022	453	761	$82,368
2023	456	725	$69,012
2024	542	934	$50,396

DME Billing Trend

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

No connected DME records

* / # = 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
17311	Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks	864	1,106	$489
17312	Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks	337	427	$365
13132	Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm	344	359	$214
99213	Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more	452	837	$75
99212	Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	461	553	$46

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Mupirocin	Mupirocin	455	8,691	$2,960
Cefadroxil	Cefadroxil	333	2,327	$1,802
Doxycycline Hyclate	Doxycycline Hyclate	74	532	$483
Valacyclovir	Valacyclovir Hcl	11	55	$117

Top 5 DME services in 2024

No connected or detailed DME service-level records for 2024.

Open Payments Summary in 2024

Category	Definition	Records	Total Reported Amount	Top Related Entity
General Payments	Reported payment or transfer-of-value amount.	7	$184	GENZYME CORPORATION
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

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FAQ

What Medicare data is available for James G. Lahti, M.D.?

Tedicare shows public-source Medicare data for James G. Lahti, M.D. (NPI 1689783086), 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 James G. Lahti, M.D. have ACO affiliation data?

No ACO affiliation record is shown in the available Tedicare data for this profile.

What billing organization is linked to James G. Lahti, M.D.?

James G. Lahti, M.D. is linked to DERMATOLOGY PARTNERS OF THE NORTH SHORE LLC (billing NPI 1114063591) in the available physician profile data.

Does James G. Lahti, M.D. have Open Payments data?

James G. Lahti, M.D. has 7 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.