Physician

Mark Sittig, MD

According to 2025 Medicare claims, Mark Sittig, MD (NPI: 1275951519) practices radiation oncology in the Nashville-Davidson--Murfreesboro--Franklin, TN market, with the plurality of this provider's patient population coming from Williamson, TN. This provider's primary affiliated billing organization is TENNESSEE ONCOLOGY,PLLC (NPI: 1164595070; TIN: 62-1647259) and primary practice location at 37205-2031.

Sittig's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 227 traditional Medicare patients, billed 5,142 HCPCS/CPT codes, and received $747,915 in Medicare payments. The top billing code was 77338 (Design and construction of radiation treatment device for high precision radiation therapy). Part D data shows 136 prescription claims across 61 beneficiaries totaling $1,971 in drug costs, led by Tamsulosin Hcl (Tamsulosin Hcl). Open Payments data shows 6 records totaling $711. 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 $17,209 to $747,915. Concurrently, Part D prescription costs have moved up and down with repeated peaks and valleys, starting at $10,589 and ending at $1,971. 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	N/R	N/R	N/R
2017	N/R	N/R	N/R
2018	N/R	N/R	N/R
2019	73	261	$17,209
2020	275	1,433	$89,747
2021	262	1,868	$122,683
2022	221	4,181	$304,424
2023	205	2,671	$235,899
2024	227	5,142	$747,915

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	33	173	$10,589
2016	35	93	$7,934
2017	32	66	$21,570
2018	17	25	$524
2019	18	22	$624
2020	50	89	$1,706
2021	52	103	$2,706
2022	55	103	$2,112
2023	54	105	$2,304
2024	61	136	$1,971

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
77338	Design and construction of radiation treatment device for high precision radiation therapy	61	77	$163
77263	Complex radiation therapy planning	65	68	$120
77334	Design and construction of complex radiation treatment device	67	108	$43
77014	Ct guidance for insertion of radiation therapy fields	78	817	$32
77300	Calculation of radiation therapy dose	67	228	$24

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Tamsulosin Hcl	Tamsulosin Hcl	46	3,225	$723
Oxybutynin Chloride Er	Oxybutynin Chloride	18	765	$262
Mometasone Furoate	Mometasone Furoate	12	238	$182
Gabapentin	Gabapentin	14	341	$135

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.	6	$711	Janssen Scientific Affairs, LLC
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 Mark Sittig, MD?

Tedicare shows public-source Medicare data for Mark Sittig, MD (NPI 1275951519), 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 Mark Sittig, MD have ACO affiliation data?

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

What billing organization is linked to Mark Sittig, MD?

Mark Sittig, MD is linked to TENNESSEE ONCOLOGY,PLLC (billing NPI 1164595070) in the available physician profile data.

Does Mark Sittig, MD have Open Payments data?

Mark Sittig, MD has 6 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.