Doctor profile · Federal record
Dr. John Chia, MD
Infectious Disease Physician (CMS: Infectious Disease) · Internal Medicine Physician · Torrance, CA
- NPI 1801876412
- Accepts Medicare
- 47 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
23430 Hawthorne Blvd Ste 200
Torrance, CA 905054730
(310) 784-5880
fax (310) 325-3117
Credentials & registration
- NPI registered
- January 2006 — 20 yrs on file
- Profile last updated
- April 11, 2018
- Year of graduation
- 1979 — 47 yrs since
- Specialty taxonomy
- 207RI0200X — NUCC code
- State license (1)
- California #G43168
- Medicaid
- CA #00G431680
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1801876412. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
975
Distinct HCPCS
9
Medicare allowed
$119,524
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 307 | 182 | $138 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 306 | 71 | $83 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 125 | 90 | $192 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 88 | 62 | $125 | |
36415 |
Insertion of needle into vein for collection of blood sample | 48 | 45 | $8 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 45 | 45 | $183 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 24 | 24 | $237 | |
G2212 |
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or | 18 | 13 | $34 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 14 | 14 | $137 |
In context: peer comparison
Among 7 peers in this city , average services per provider: 280. This provider delivers 3.5× the peer median.Open Payments
Industry payments received
All-time total
$329
Transactions
8
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Gilead Sciences, Inc. | 6 | $277.42 | |
| Shionogi Inc | 2 | $51.23 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
798
Patients
197
Total drug cost
$124,379
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Paxlovid (Eua) (Nirmatrelvir/Ritonavir) | Brand | 145 | 95 | $1,478 |
| Aripiprazole | Generic | 93 | 21 | $7,023 |
| Acyclovir | Generic | 88 | 20 | $3,005 |
| Lamivudine | Generic | 62 | 11 | $15,061 |
| Gabapentin | Generic | 59 | 12 | $1,002 |
| Valacyclovir (Valacyclovir Hcl) | Brand | 52 | 21 | $5,785 |
| Tramadol Hcl | Generic | 41 | 0 | $306 |
| Sertraline Hcl | Generic | 40 | 0 | $178 |
| Memantine Hcl | Generic | 37 | 0 | $2,681 |
| Baclofen | Generic | 33 | 0 | $448 |
Frequently asked questions
What is Dr. John Chia's medical specialty?
Dr. John Chia practices Infectious Disease Physician in Torrance, CA.
Where does Dr. John Chia practice?
Dr. John Chia practices at 23430 Hawthorne Blvd Ste 200, Torrance, CA 905054730. Office phone: 3107845880.
What is Dr. John Chia's NPI?
Dr. John Chia's National Provider Identifier (NPI) is 1801876412, issued by NPPES.
Does Dr. John Chia accept Medicare assignment?
Yes. Dr. John Chia accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Chia commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.