Doctor profile · Federal record
Dr. Ray Hsiao, MD
Internal Medicine Physician (CMS: Internal Medicine) · Hacienda Heights, CA
- NPI 1164507869
- Accepts Medicare
- MIPS 75.0 / 100 · 2023
- 37 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1850 S Azusa Ave, Suite 308
Hacienda Heights, CA 917456813
(626) 854-7866
fax (626) 820-0666
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- July 9, 2007
- Year of graduation
- 1989 — 37 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #G70571
- Medicaid
- CA #00G705711
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1164507869. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
19,114
Distinct HCPCS
10
Medicare allowed
$1,031,579
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J7329 |
Hyaluronan or derivative, trivisc, for intra-articular injection, 1 mg | 4,500 | 34 | $9 | |
99490 |
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | 3,546 | 339 | $68 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 2,377 | 374 | $99 | |
99439 |
Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month | 2,069 | 326 | $52 | |
99457 |
Management using the results of remote vital sign monitoring per calendar month, first 20 minutes | 1,342 | 155 | $54 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 1,194 | 281 | $63 | |
99454 |
Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days | 1,034 | 149 | $59 | |
36415 |
Insertion of needle into vein for collection of blood sample | 554 | 232 | $8 | |
20611 |
Aspiration and/or injection of fluid large joint using ultrasound guidance | 296 | 37 | $146 | |
99497 |
Advance care planning, first 30 minutes | 255 | 253 | $89 |
In context: peer comparison
Among 5 peers in Hacienda Heights Internal Medicine Physician, average services per provider: 334. This provider delivers 57× the peer median.Open Payments
Industry payments received
All-time total
$2,362
Transactions
96
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| AstraZeneca Pharmaceuticals Lp | 29 | $661.24 | |
| GlaxoSmithKline, LLC. | 19 | $432.53 | |
| Amgen INC. | 9 | $192.03 | |
| Bayer Healthcare Pharmaceuticals INC. | 4 | $111.42 | |
| Lilly USA, LLC | 4 | $101.79 | |
| Novo Nordisk INC | 5 | $95.70 | |
| Phathom Pharmaceuticals, INC. | 4 | $95.48 | |
| Radius Health, INC. | 3 | $93.70 | |
| Boehringer Ingelheim Pharmaceuticals, INC. | 3 | $91.07 | |
| Abbott Laboratories | 5 | $88.58 | |
| Janssen Pharmaceuticals, INC | 3 | $79.11 | |
| Novartis Pharmaceuticals Corporation | 3 | $70.16 | |
| Merck Sharp & Dohme LLC | 2 | $39.37 | |
| Ironwood Pharmaceuticals, INC | 2 | $37.26 | |
| Pfizer INC. | 1 | $25.68 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
7,758
Patients
2,243
Total drug cost
$1,042,500
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Rosuvastatin Calcium | Generic | 1,014 | 307 | $38,384 |
| Atorvastatin Calcium | Generic | 971 | 268 | $19,069 |
| Amlodipine Besylate | Generic | 911 | 270 | $13,301 |
| Losartan Potassium | Generic | 829 | 252 | $17,871 |
| Ezetimibe | Generic | 776 | 224 | $52,945 |
| Famotidine | Generic | 406 | 151 | $10,199 |
| Metoprolol Succinate | Generic | 389 | 103 | $8,716 |
| Metformin Hcl ER (Metformin Hcl) | Brand | 354 | 100 | $8,673 |
| Jardiance (Empagliflozin) | Brand | 350 | 68 | $334,724 |
| Farxiga (Dapagliflozin Propanediol) | Brand | 349 | 80 | $334,644 |
Frequently asked questions
What is Dr. Ray Hsiao's medical specialty?
Dr. Ray Hsiao practices Internal Medicine Physician in Hacienda Heights, CA.
Where does Dr. Ray Hsiao practice?
Dr. Ray Hsiao practices at 1850 S Azusa Ave, Hacienda Heights, CA 917456813. Office phone: 6268547866.
What is Dr. Ray Hsiao's NPI?
Dr. Ray Hsiao's National Provider Identifier (NPI) is 1164507869, issued by NPPES.
Does Dr. Ray Hsiao accept Medicare assignment?
Yes. Dr. Ray Hsiao accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ray Hsiao commonly perform?
Top Medicare-reported procedures in 2023: Hyaluronan or derivative, trivisc, for intra-articular injection, 1 mg (HCPCS J7329); Chronic care management services (HCPCS 99490); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.