Physician

Chiwai E Chan, D.O.

According to 2025 Medicare claims, Chiwai Chan, D.O. (NPI: 1629051529) practices interventional pain management (ipm) in the Anaheim-Santa Ana-Irvine, CA market, with the plurality of this provider's patient population coming from Orange, CA. This provider's primary affiliated billing organization is PAIN MEDICINE SPECIALTY GROUP INC. (NPI: 1770624702; TIN: 20-4887385) and primary practice location at 92708-8703. Chan is affiliated with the Family Choice ACO, LLC (ACO ID: A3770), participating under the MSSP model.

Chan's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 651 traditional Medicare patients, billed 178,071 HCPCS/CPT codes, and received $1,031,549 in Medicare payments. The top billing code was 99223 (Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes). Part D data shows 716 prescription claims across 262 beneficiaries totaling $19,205 in drug costs, led by Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen). Open Payments data shows 6 records totaling $112. 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 $362,998 to $1,031,549. In contrast, Part D prescription costs have fallen sharply in recent years, from $181,364 to $19,205. 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	400	8,629	$362,998
2016	484	12,353	$408,704
2017	533	27,722	$461,664
2018	530	32,241	$490,371
2019	658	34,762	$573,846
2020	580	30,241	$599,072
2021	527	27,740	$593,949
2022	569	43,264	$786,331
2023	602	55,006	$886,166
2024	651	178,071	$1,031,549

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	377	3,166	$181,364
2016	460	3,438	$155,588
2017	409	2,713	$145,372
2018	574	3,182	$198,993
2019	429	1,739	$98,302
2020	245	1,225	$57,472
2021	345	1,373	$53,989
2022	382	1,534	$69,400
2023	338	1,011	$40,075
2024	262	716	$19,205

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
99223	Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	210	257	$142
99214	Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	423	4,179	$105
99232	Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	211	1,944	$65
Q9966	Low osmolar contrast material, 200-299 mg/ml iodine concentration, per ml	228	50,598	$0
J1010	Injection, methylprednisolone acetate, 1 mg	187	104,081	$0

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	190	3,032	$1,993
Lidocaine	Lidocaine	13	390	$1,472
Oxycodone Hcl	Oxycodone Hcl	74	1,708	$1,100
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	80	1,125	$741
Hydromorphone Hcl	Hydromorphone Hcl	39	681	$336

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	$112	SCILEX PHARMACEUTICALS INC.
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 Chiwai E. Chan, D.O.?

Tedicare shows public-source Medicare data for Chiwai E. Chan, D.O. (NPI 1629051529), 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 Chiwai E. Chan, D.O. have ACO affiliation data?

Chiwai E. Chan, D.O. is shown with ACO affiliation data for Family Choice ACO, LLC (MSSP, ACO ID A3770).

What billing organization is linked to Chiwai E. Chan, D.O.?

Chiwai E. Chan, D.O. is linked to PAIN MEDICINE SPECIALTY GROUP INC. (billing NPI 1770624702) in the available physician profile data.

Does Chiwai E. Chan, D.O. have Open Payments data?

Chiwai E. Chan, D.O. 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.