Doctor profile · Federal record
Dr. Diem Pham, D.O.
Procedural Dermatology Physician (CMS: Dermatology) · Chino Hills, CA
- NPI 1255421335
- Accepts Medicare
- MIPS 87.9 / 100 · 2023
- 29 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
3110 Chino Ave Ste 120
Chino Hills, CA 917091294
(909) 313-5111 - Additional location
-
954 W Foothill Blvd Ste B
Upland, CA 91786
(909) 949-7500
fax (909) 946-1133
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- January 19, 2021
- Year of graduation
- 1997 — 29 yrs since
- Specialty taxonomy
- 207NS0135X — NUCC code
- State license (1)
- California #20A7309
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1255421335. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,423
Distinct HCPCS
10
Medicare allowed
$94,641
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
17003 |
Destruction of precancer skin growth, 2-14 growths | 344 | 42 | $7 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 305 | 132 | $94 | |
J3301 |
Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 222 | 16 | $1 | |
17110 |
Destruction of skin growth, 1-14 growths | 146 | 91 | $115 | |
17000 |
Destruction of precancer skin growth, 1 growth | 89 | 55 | $42 | |
17004 |
Destruction of precancer skin growth, 15 or more growths | 77 | 39 | $179 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 54 | 54 | $116 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 31 | 25 | $132 | |
17111 |
Destruction of skin growth, 15 or more growths | 30 | 18 | $141 | |
11102 |
Biopsy of related skin growth, first growth | 28 | 25 | $83 |
In context: peer comparison
Among 1 peers in Chino Hills Procedural Dermatology Physician, average services per provider: 94. This provider delivers 15× the peer median.Open Payments
Industry payments received
All-time total
$1,605
Transactions
85
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Leo Pharma INC. | 27 | $422.77 | |
| Incyte Corporation | 11 | $206.54 | |
| Abbvie INC. | 15 | $178.78 | |
| Dermavant Sciences, INC. | 9 | $175.40 | |
| Novartis Pharmaceuticals Corporation | 5 | $124.30 | |
| Genzyme Corporation | 3 | $106.55 | |
| Ucb, INC. | 3 | $73.26 | |
| Regeneron Healthcare Solutions, INC. | 2 | $57.25 | |
| Sun Pharmaceutical Industries INC. | 2 | $40.52 | |
| Pfizer INC. | 2 | $36.49 | |
| Galderma Laboratories, L.P. | 2 | $36.20 | |
| Krystal Biotech INC | 1 | $32.74 | |
| Amgen INC. | 1 | $30.07 | |
| Arcutis Biotherapeutics, INC. | 1 | $23.65 | |
| E.R. Squibb & Sons, L.L.C. | 1 | $23.58 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
342
Patients
131
Total drug cost
$18,382
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Mupirocin | Generic | 57 | 42 | $497 |
| Clobetasol Propionate | Generic | 52 | 22 | $4,199 |
| Ketoconazole | Generic | 49 | 18 | $814 |
| Triamcinolone Acetonide | Generic | 43 | 23 | $425 |
| Doxycycline Monohydrate | Generic | 21 | 12 | $505 |
| Tretinoin | Generic | 21 | 0 | $2,709 |
| Alclometasone Dipropionate | Generic | 18 | 14 | $958 |
| Clindamycin Phosphate | Generic | 16 | 0 | $1,081 |
| Fluocinonide | Generic | 16 | 0 | $1,022 |
| Ciclopirox (Ciclopirox Olamine) | Brand | 13 | 0 | $389 |
Frequently asked questions
What is Dr. Diem Pham's medical specialty?
Dr. Diem Pham practices Procedural Dermatology Physician in Chino Hills, CA.
Where does Dr. Diem Pham practice?
Dr. Diem Pham practices at 3110 Chino Ave Ste 120, Chino Hills, CA 917091294. Office phone: 9093135111.
What is Dr. Diem Pham's NPI?
Dr. Diem Pham's National Provider Identifier (NPI) is 1255421335, issued by NPPES.
Does Dr. Diem Pham accept Medicare assignment?
Yes. Dr. Diem Pham accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Diem Pham 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); Injection, triamcinolone acetonide, not otherwise specified, 10 mg (HCPCS J3301). Source: CMS Medicare Physician & Other Practitioners file.