Doctor profile · Federal record
Dr. Timothy Chang, MD
Mohs-Micrographic Surgery Physician (CMS: Dermatology) · La Jolla, CA
- NPI 1962766337
- Accepts Medicare
- MIPS 75.0 / 100 · 2023
- 14 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
9850 Genesee Ave Ste 850
La Jolla, CA 920371233
(858) 657-0267
fax (858) 657-9485
Credentials & registration
- NPI registered
- June 2012 — 14 yrs on file
- Profile last updated
- April 18, 2019
- Year of graduation
- 2012 — 14 yrs since
- Specialty taxonomy
- 207ND0101X — NUCC code
- State license (1)
- California #A142954
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1962766337. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
5,401
Distinct HCPCS
10
Medicare allowed
$758,512
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
17003 |
Destruction of precancer skin growth, 2-14 growths | 1,755 | 259 | $8 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 683 | 331 | $97 | |
17000 |
Destruction of precancer skin growth, 1 growth | 665 | 326 | $60 | |
88305 |
Pathology examination of tissue using a microscope, intermediate complexity | 296 | 185 | $40 | |
17311 |
Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks | 277 | 212 | $587 | |
17110 |
Destruction of skin growth, 1-14 growths | 273 | 179 | $128 | |
11102 |
Biopsy of related skin growth, first growth | 241 | 186 | $98 | |
17312 |
Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks | 206 | 113 | $463 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 184 | 134 | $137 | |
17313 |
Removal and microscopic exam of growth of trunk, arms, or legs, 1-5 tissue blocks | 101 | 86 | $679 |
In context: peer comparison
Among 3 peers in La Jolla Mohs-Micrographic Surgery Physician, average services per provider: 117. This provider delivers 46× the peer median.Open Payments
Industry payments received
All-time total
$2,049
Transactions
85
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 18 | $337.76 | |
| Regeneron Healthcare Solutions, INC. | 13 | $285.24 | |
| E.R. Squibb & Sons, L.L.C. | 11 | $277.48 | |
| Pfizer INC. | 9 | $229.72 | |
| Janssen Biotech, INC. | 4 | $150.30 | |
| Amgen INC. | 7 | $141.65 | |
| Arcutis Biotherapeutics, INC. | 6 | $131.37 | |
| Sun Pharmaceutical Industries INC. | 2 | $115.54 | |
| Incyte Corporation | 5 | $101.36 | |
| Leo Pharma INC. | 3 | $85.12 | |
| Ucb, INC. | 3 | $74.99 | |
| Novartis Pharmaceuticals Corporation | 1 | $30.62 | |
| Galderma Laboratories, L.P. | 1 | $26.68 | |
| Lilly USA, LLC | 1 | $24.68 | |
| Boehringer Ingelheim Pharmaceuticals, INC. | 1 | $19.48 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
453
Patients
260
Total drug cost
$19,002
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Doxycycline Hyclate | Generic | 76 | 59 | $852 |
| Ketoconazole | Generic | 68 | 32 | $1,160 |
| Triamcinolone Acetonide | Generic | 55 | 36 | $758 |
| Mupirocin | Generic | 52 | 43 | $490 |
| Clindamycin Phosphate | Generic | 29 | 21 | $1,186 |
| Clobetasol Propionate | Generic | 27 | 19 | $2,028 |
| Tacrolimus | Generic | 24 | 0 | $5,477 |
| Fluocinonide | Generic | 23 | 18 | $1,127 |
| Fluorouracil | Generic | 23 | 21 | $2,009 |
| Valacyclovir (Valacyclovir Hcl) | Brand | 16 | 0 | $194 |
Hospital affiliations
Frequently asked questions
What is Dr. Timothy Chang's medical specialty?
Dr. Timothy Chang practices Mohs-Micrographic Surgery Physician in La Jolla, CA.
Where does Dr. Timothy Chang practice?
Dr. Timothy Chang practices at 9850 Genesee Ave Ste 850, La Jolla, CA 920371233. Office phone: 8586570267.
What is Dr. Timothy Chang's NPI?
Dr. Timothy Chang's National Provider Identifier (NPI) is 1962766337, issued by NPPES.
Does Dr. Timothy Chang accept Medicare assignment?
Yes. Dr. Timothy Chang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Timothy Chang 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 99213); Destruction of precancer skin growth, 1 growth (HCPCS 17000). Source: CMS Medicare Physician & Other Practitioners file.