Physician

Chistopher Nguyen DO, M.D.

According to 2025 Medicare claims, Chistopher DO, M.D. (NPI: 1407876659) practices internal medicine in the San Jose-Sunnyvale-Santa Clara, CA market, with the plurality of this provider's patient population coming from Santa Clara, CA. This provider's primary affiliated billing organization is CHRISTOPHER NGUYEN DO MD A PROFESSIONAL CORPORATION (NPI: 1043343650) and primary practice location at 95121-1795.

DO's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 508 traditional Medicare patients, billed 17,808 HCPCS/CPT codes, and received $1,078,891 in Medicare payments. The top billing code was 99214 (Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more). Part D data shows 20,498 prescription claims across 1,112 beneficiaries totaling $1,914,463 in drug costs, led by Farxiga (Dapagliflozin Propanediol). DME data shows 192 claims. Open Payments data shows 22 records totaling $789. 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 $127,240 to $1,078,891. Similarly, Part D prescription costs have moved sharply higher in recent years, from $1,199,661 to $1,914,463. In contrast, DME billing represents a smaller volume and moved up and down with repeated peaks and valleys, starting at $2,409 and ending at $11,546.

Part B Carrier Billing Trend

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

Year	Patients	Clm Lines	Payment
2015	352	4,801	$127,240
2016	285	5,954	$144,440
2017	312	6,548	$149,247
2018	310	5,634	$144,300
2019	298	5,043	$169,287
2020	234	3,385	$104,699
2021	335	10,344	$419,608
2022	399	12,216	$516,110
2023	454	14,715	$789,140
2024	508	17,808	$1,078,891

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	720	16,440	$1,199,661
2016	674	16,175	$1,046,284
2017	676	15,823	$989,585
2018	709	16,314	$1,048,928
2019	743	16,652	$857,843
2020	843	17,815	$854,102
2021	881	17,944	$1,298,825
2022	918	18,229	$1,606,902
2023	1,035	20,378	$2,099,991
2024	1,112	20,498	$1,914,463

DME Billing Trend

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

Year	Patients	Claims	Payment
2015	36	125	$1,696
2016	32	99	$1,002
2017	42	88	$547
2018	47	154	$1,672
2019	50	125	$1,166
2020	35	128	$1,899
2021	40	120	$1,446
2022	62	92	$1,173
2023	43	123	$2,358
2024	62	192	$5,397

* / # = 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
99214	Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	413	1,459	$115
99213	Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more	430	3,711	$79
76775	Limited ultrasound scan behind abdominal cavity	338	511	$57
93000	Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report	337	525	$12
36415	Insertion of needle into vein for collection of blood sample	330	512	$9

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Farxiga	Dapagliflozin Propanediol	278	14,348	$261,754
Jardiance	Empagliflozin	205	9,570	$180,262
Januvia	Sitagliptin Phosphate	178	8,670	$156,591
Tradjenta	Linagliptin	91	5,310	$87,529
Eliquis	Apixaban	99	4,139	$73,316

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
A4239	Supply allowance for non-adjunctive, non-implanted continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service	N	N/R	11	$2,478
E1390	Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate	Y	N/R	23	$1,488
A4253	Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips	N	34	76	$829
K0738	Portable gaseous oxygen system, rental; home compressor used to fill portable oxygen cylinders; includes portable containers, regulator, flowmeter, humidifier, cannula or mask, and tubing	Y	N/R	12	$418
E1038	Transport chair, adult size, patient weight capacity up to and including 300 pounds	Y	N/R	16	$130

Open Payments Summary in 2024

Category	Definition	Records	Total Reported Amount	Top Related Entity
General Payments	Reported payment or transfer-of-value amount.	22	$789	AstraZeneca Pharmaceuticals LP
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 Chistopher Nguyen DO, M.D.?

Tedicare shows public-source Medicare data for Chistopher Nguyen DO, M.D. (NPI 1407876659), 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 Chistopher Nguyen DO, 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 Chistopher Nguyen DO, M.D.?

Chistopher Nguyen DO, M.D. is linked to CHRISTOPHER NGUYEN DO MD A PROFESSIONAL CORPORATION (billing NPI 1043343650) in the available physician profile data.

Does Chistopher Nguyen DO, M.D. have Open Payments data?

Chistopher Nguyen DO, M.D. has 22 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.