Doctor profile · Federal record
Dr. Ronald Chang, M.D.
Hospitalist Physician (CMS: Internal Medicine) · Internal Medicine Physician · Pomona, CA
- NPI 1861810863
- Accepts Medicare
- 12 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1880 N Orange Grove Ave
Pomona, CA 917673006
(909) 630-7158
fax (909) 630-7983 - Mailing address
-
840 Towne Center Dr
Pomona, CA 917675900
Credentials & registration
- NPI registered
- April 2014 — 12 yrs on file
- Profile last updated
- October 3, 2018
- Year of graduation
- 2014 — 12 yrs since
- Specialty taxonomy
- 208M00000X — NUCC code
- State license (1)
- California #A141360
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1861810863. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
647
Distinct HCPCS
3
Medicare allowed
$88,189
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 382 | 133 | $125 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 135 | 133 | $182 | |
99239 |
Hospital discharge day management, more than 30 minutes | 130 | 127 | $121 |
In context: peer comparison
Among 9 peers in this city , average services per provider: 214. This provider delivers 3.0× the peer median.Open Payments
Industry payments received
All-time total
$42
Transactions
2
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Dexcom, Inc. | 1 | $28.23 | |
| Kestra Medical Technology Services, Inc. | 1 | $13.57 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
106
Patients
43
Total drug cost
$8,405
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Ultra-Fine Nano Pen Needle (Pen Needle, Diabetic) | Brand | 26 | 0 | $1,497 |
| Atorvastatin Calcium | Generic | 18 | 17 | $270 |
| Furosemide | Generic | 14 | 14 | $112 |
| Metoprolol Tartrate | Generic | 14 | 0 | $113 |
| Cephalexin | Generic | 12 | 12 | $40 |
| Alcohol Pads (Alcohol Antiseptic Pads) | Brand | 11 | 0 | $1,054 |
| Xarelto (Rivaroxaban) | Brand | 11 | 0 | $5,317 |
Hospital affiliations
Frequently asked questions
What is Dr. Ronald Chang's medical specialty?
Dr. Ronald Chang practices Hospitalist Physician in Pomona, CA.
Where does Dr. Ronald Chang practice?
Dr. Ronald Chang practices at 1880 N Orange Grove Ave, Pomona, CA 917673006. Office phone: 9096307158.
What is Dr. Ronald Chang's NPI?
Dr. Ronald Chang's National Provider Identifier (NPI) is 1861810863, issued by NPPES.
Does Dr. Ronald Chang accept Medicare assignment?
Yes. Dr. Ronald Chang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ronald Chang commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Initial hospital care with moderate level of medical decision making (HCPCS 99223); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.