Doctor profile · Federal record
Dr. Derek Mai, M.D.
Ophthalmology Physician (CMS: Ophthalmology) · Student in an Organized Health Care Education/Training Program · Mission Hills, CA
- NPI 1386051423
- Accepts Medicare
- 12 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
11333 Sepulveda Blvd
Mission Hills, CA 91345
(818) 869-7269
fax (818) 403-2167 - Additional location
-
9415 Campus Point Dr # Mc0946
La Jolla, CA 920930946
(858) 534-8858
fax (858) 822-0040 - Mailing address
-
Po Box 9602
Mission Hills, CA 913469602
Credentials & registration
- NPI registered
- July 2014 — 12 yrs on file
- Profile last updated
- October 22, 2019
- Year of graduation
- 2014 — 12 yrs since
- Specialty taxonomy
- 207W00000X — NUCC code
- State license (1)
- California #A141400
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1386051423. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
520
Distinct HCPCS
10
Medicare allowed
$59,318
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 171 | 112 | $98 | |
92014 |
Established patient complete exam of visual system | 118 | 97 | $141 | |
92083 |
Exam of visual field with extended testing | 59 | 54 | $71 | |
92134 |
Imaging of retina | 49 | 31 | $45 | |
92133 |
Imaging of optic nerve | 35 | 34 | $40 | |
92004 |
New patient complete exam of visual system | 28 | 28 | $167 | |
92285 |
Photography of content of eyes | 21 | 21 | $23 | |
15823 |
Removal of excessive skin and fat of upper eyelid | 14 | 14 | $844 | |
92136 |
Measurement of corneal curvature and depth of eye | 13 | 13 | $52 | |
92020 |
Exam of the internal drainage system of eye | 12 | 12 | $31 |
In context: peer comparison
Among 3 peers in Mission Hills Ophthalmology Physician, average services per provider: 72. This provider delivers 7.2× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
2,962
Patients
1,370
Total drug cost
$121,077
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Latanoprost | Generic | 923 | 306 | $29,894 |
| Prednisolone Acetate | Generic | 347 | 202 | $11,354 |
| Moxifloxacin (Moxifloxacin Hcl) | Brand | 295 | 161 | $9,025 |
| Ketorolac Tromethamine | Generic | 274 | 153 | $4,843 |
| Timolol Maleate | Generic | 213 | 74 | $5,337 |
| Neomycin-Polymyxin-Dexameth (Neomycin/Polymyxin B/Dexametha) | Brand | 209 | 152 | $2,667 |
| Azelastine Hcl | Generic | 156 | 80 | $7,215 |
| Dorzolamide-Timolol (Dorzolamide Hcl/Timolol Maleat) | Brand | 156 | 57 | $6,435 |
| Brimonidine Tartrate | Generic | 129 | 43 | $3,833 |
| Dorzolamide Hcl | Generic | 82 | 28 | $3,942 |
Frequently asked questions
What is Dr. Derek Mai's medical specialty?
Dr. Derek Mai practices Ophthalmology Physician in Mission Hills, CA.
Where does Dr. Derek Mai practice?
Dr. Derek Mai practices at 11333 Sepulveda Blvd, Mission Hills, CA 91345. Office phone: 8188697269.
What is Dr. Derek Mai's NPI?
Dr. Derek Mai's National Provider Identifier (NPI) is 1386051423, issued by NPPES.
Does Dr. Derek Mai accept Medicare assignment?
Yes. Dr. Derek Mai accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Derek Mai commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient complete exam of visual system (HCPCS 92014); Exam of visual field with extended testing (HCPCS 92083). Source: CMS Medicare Physician & Other Practitioners file.