Doctor profile · Federal record
Dr. Charles Chiang, M.D
Dermatology Physician (CMS: Dermatology) · Fremont, CA
- NPI 1780889519
- Accepts Medicare
- 19 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1860 Mowry Ave Ste 304
Fremont, CA 945381730
(510) 456-2390
fax (510) 456-2380 - Mailing address
-
39465 Paseo Padre Pkwy Ste 2600
Fremont, CA 945381631
Credentials & registration
- NPI registered
- June 2007 — 19 yrs on file
- Profile last updated
- November 26, 2024
- Year of graduation
- 2007 — 19 yrs since
- Specialty taxonomy
- 207N00000X — NUCC code
- State license (1)
- California #A104751
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1780889519. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,427
Distinct HCPCS
10
Medicare allowed
$121,405
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
17003 |
Destruction of precancer skin growth, 2-14 growths | 507 | 50 | $8 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 222 | 114 | $147 | |
17110 |
Destruction of skin growth, 1-14 growths | 194 | 90 | $133 | |
17000 |
Destruction of precancer skin growth, 1 growth | 115 | 56 | $48 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 109 | 109 | $194 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 95 | 57 | $98 | |
11102 |
Biopsy of related skin growth, first growth | 71 | 56 | $91 | |
17004 |
Destruction of precancer skin growth, 15 or more growths | 57 | 31 | $210 | |
11103 |
Biopsy of related skin growth, each additional growth | 44 | 23 | $61 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 13 | 13 | $132 |
In context: peer comparison
Among 6 peers in Fremont Dermatology Physician, average services per provider: 272. This provider delivers 5.2× the peer median.Open Payments
Industry payments received
All-time total
$2,395
Transactions
131
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Leo Pharma INC. | 48 | $651.18 | |
| Abbvie INC. | 16 | $392.61 | |
| Incyte Corporation | 15 | $247.33 | |
| Regeneron Healthcare Solutions, INC. | 11 | $202.19 | |
| Lilly USA, LLC | 6 | $165.80 | |
| E.R. Squibb & Sons, L.L.C. | 8 | $161.96 | |
| Dermavant Sciences, INC. | 8 | $145.42 | |
| Sun Pharmaceutical Industries INC. | 5 | $110.49 | |
| Genzyme Corporation | 2 | $69.89 | |
| Pfizer INC. | 3 | $69.65 | |
| Galderma Laboratories, L.P. | 3 | $47.62 | |
| Janssen Biotech, INC. | 2 | $44.22 | |
| Arcutis Biotherapeutics, INC. | 2 | $41.64 | |
| Boehringer Ingelheim Pharmaceuticals, INC. | 1 | $28.50 | |
| Ucb, INC. | 1 | $16.10 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
245
Patients
164
Total drug cost
$6,583
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Mometasone Furoate | Generic | 49 | 34 | $1,092 |
| Doxycycline Hyclate | Generic | 42 | 27 | $535 |
| Hydrocortisone | Generic | 35 | 23 | $181 |
| Clobetasol Propionate | Generic | 34 | 24 | $3,756 |
| Triamcinolone Acetonide | Generic | 32 | 23 | $254 |
| Mupirocin | Generic | 27 | 21 | $281 |
| Cephalexin | Generic | 14 | 12 | $85 |
| Clindamycin Phosphate | Generic | 12 | 0 | $399 |
Frequently asked questions
What is Dr. Charles Chiang's medical specialty?
Dr. Charles Chiang practices Dermatology Physician in Fremont, CA.
Where does Dr. Charles Chiang practice?
Dr. Charles Chiang practices at 1860 Mowry Ave Ste 304, Fremont, CA 945381730. Office phone: 5104562390.
What is Dr. Charles Chiang's NPI?
Dr. Charles Chiang's National Provider Identifier (NPI) is 1780889519, issued by NPPES.
Does Dr. Charles Chiang accept Medicare assignment?
Yes. Dr. Charles Chiang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Charles Chiang commonly perform?
Top Medicare-reported procedures in 2023: Destruction of precancer skin growth, 2-14 growths (HCPCS 17003); Established patient office or other outpatient visit (HCPCS 99214); Destruction of skin growth, 1-14 growths (HCPCS 17110). Source: CMS Medicare Physician & Other Practitioners file.