Physician

David R Giammar, M.D.

According to 2025 Medicare claims, David Giammar, M.D. (NPI: 1154307858) practices colorectal surgery (formerly proctology) in the Canton-Massillon, OH market, with the plurality of this provider's patient population coming from Stark, OH. This provider's primary affiliated billing organization is OHIO SPECIALTY PHYSICIANS CORPORATION (NPI: 1285745364; TIN: 34-1853300) and primary practice location at 44710-1702.

Giammar's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 214 traditional Medicare patients, billed 546 HCPCS/CPT codes, and received $65,747 in Medicare payments. The top billing code was 99222 (Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes). Part D data shows 207 prescription claims across 78 beneficiaries totaling $18,184 in drug costs, led by Linzess (Linaclotide). DME data shows 39 claims. Open Payments data shows 5 records totaling $111. 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 have moved up and down with repeated peaks and valleys, starting at $21,299 and ending at $18,184. In contrast, DME billing represents a smaller volume and moved sharply higher in recent years, from $0 to $168.

Part B Carrier Billing Trend

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

Year	Patients	Clm Lines	Payment
2015	243	559	$71,892
2016	250	683	$94,887
2017	280	801	$87,409
2018	296	1,004	$115,727
2019	340	1,149	$141,482
2020	185	625	$92,012
2021	151	450	$64,168
2022	216	558	$79,226
2023	260	687	$93,318
2024	214	546	$65,747

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	128	232	$21,299
2016	127	299	$16,849
2017	155	373	$38,002
2018	148	374	$46,301
2019	157	323	$21,225
2020	126	315	$29,964
2021	110	357	$31,352
2022	97	269	$24,714
2023	100	287	$18,449
2024	78	207	$18,184

DME Billing Trend

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

Year	Patients	Claims	Payment
2015	N/R	23	$888
2016	N/R	22	$1,756
2017	N/R	57	$3,335
2018	N/R	19	$781
2019	N/R	13	$585
2020	N/R	50	$1,178
2021	N/R	N/R	N/R
2022	N/R	N/R	N/R
2023	N/R	N/R	N/R
2024	N/R	39	$4,755

* / # = 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
99222	Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	51	51	$95
99213	Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more	42	68	$65
99203	New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	23	23	$62
99232	Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	26	34	$60
99231	Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes	51	63	$37

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Linzess	Linaclotide	13	390	$7,476
Ondansetron Odt	Ondansetron	16	205	$254
Metronidazole	Metronidazole	23	230	$179
Hydromorphone Hcl	Hydromorphone Hcl	20	119	$44

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
A4409	Ostomy skin barrier, with flange (solid, flexible or accordion), extended wear, without built-in convexity, 4 x 4 inches or smaller, each	N	N/R	16	$2,734
A4385	Ostomy skin barrier, solid 4 x 4 or equivalent, extended wear, without built-in convexity, each	N	N/R	12	$1,853
A4456	Adhesive remover, wipes, any type, each	N	N/R	11	$168

Open Payments Summary in 2024

Category	Definition	Records	Total Reported Amount	Top Related Entity
General Payments	Reported payment or transfer-of-value amount.	5	$111	Salix Pharmaceuticals, a division of Bausch Health US, 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 David R. Giammar, M.D.?

Tedicare shows public-source Medicare data for David R. Giammar, M.D. (NPI 1154307858), 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 David R. Giammar, 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 David R. Giammar, M.D.?

David R. Giammar, M.D. is linked to OHIO SPECIALTY PHYSICIANS CORPORATION (billing NPI 1285745364) in the available physician profile data.

Does David R. Giammar, M.D. have Open Payments data?

David R. Giammar, M.D. has 5 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.