Physician

Bess Lee Chang, D.O.

According to 2025 Medicare claims, Bess Chang, D.O. (NPI: 1942228515) practices neurology in the Las Vegas-Henderson-North Las Vegas, NV market, with the plurality of this provider's patient population coming from Clark, NV. This provider's primary affiliated billing organization is BESS CHANG PLLC (NPI: 1790375251; TIN: 272439628) and primary practice location at 89113-2247.

Chang's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 566 traditional Medicare patients, billed 172,416 HCPCS/CPT codes, and received $7,884,251 in Medicare payments. The top billing code was 95819 (Measurement of brain wave activity (eeg), awake and asleep). Part D data shows 2,419 prescription claims across 433 beneficiaries totaling $1,036,386 in drug costs, led by Gammaked (Immune Globul G/Gly/Iga Avg 46). Open Payments data shows 122 records totaling $3,241. 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 sharply higher in recent years, from $656,051 to $7,884,251. Concurrently, Part D prescription costs have moved up and down with repeated peaks and valleys, starting at $1,329,940 and ending at $1,036,386. 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	759	14,249	$656,051
2016	826	18,685	$796,703
2017	801	24,798	$898,822
2018	853	46,213	$941,600
2019	753	50,147	$893,201
2020	714	53,000	$947,598
2021	673	145,791	$5,227,048
2022	693	162,128	$6,929,599
2023	616	158,980	$7,008,989
2024	566	172,416	$7,884,251

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	358	2,584	$1,329,940
2016	358	2,659	$1,440,706
2017	391	2,900	$1,711,342
2018	379	2,613	$1,983,946
2019	361	2,342	$1,671,229
2020	338	1,922	$2,161,350
2021	361	2,013	$1,767,871
2022	407	2,137	$1,186,504
2023	404	2,167	$1,110,617
2024	433	2,419	$1,036,386

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
95819	Measurement of brain wave activity (eeg), awake and asleep	313	374	$352
95957	Measurement of brain wave activity (eeg), digital analysis	259	311	$231
95913	Nerve conduction, 13 or more studies	494	893	$213
99215	Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	346	1,030	$134
95886	Needle measurement of electrical activity in arm or leg muscles, complete study	495	1,789	$75

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Gammaked	Immune Globul G/Gly/Iga Avg 46	20	490	$332,825
Octagam	Immun Globg(Igg)/Malt/Iga Ov50	12	309	$177,111
Privigen	Immun Glob G(Igg)/Pro/Iga 0-50	14	392	$132,655
Nuplazid	Pimavanserin Tartrate	20	600	$94,785
Pregabalin	Pregabalin	376	28,356	$15,366

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.	122	$3,241	Abbott Laboratories
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 Bess Lee Chang, D.O.?

Tedicare shows public-source Medicare data for Bess Lee Chang, D.O. (NPI 1942228515), 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 Bess Lee Chang, D.O. have ACO affiliation data?

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

What billing organization is linked to Bess Lee Chang, D.O.?

Bess Lee Chang, D.O. is linked to BESS CHANG PLLC (billing NPI 1790375251) in the available physician profile data.

Does Bess Lee Chang, D.O. have Open Payments data?

Bess Lee Chang, D.O. has 122 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.