Doctor profile · Federal record
Dr. John Feng, MD
Internal Medicine Physician · Santa Ana, CA
- NPI 1346660081
- 12 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
3401 W Sunflower Ave Ste 100
Santa Ana, CA 92704
(888) 789-9585 - Additional location
-
6863 Verde Ridge RD
Rancho Palos Verdes, CA 902754637
(310) 619-4995
Credentials & registration
- NPI registered
- April 2014 — 12 yrs on file
- Profile last updated
- October 9, 2019
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A139812
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1346660081. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,408
Distinct HCPCS
9
Medicare allowed
$130,818
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99348 |
Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes | 357 | 157 | $81 | |
99349 |
Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes | 319 | 139 | $135 | |
99347 |
Residence visit for established patient with straightforward medical decision making, per day, if using time, at least 15 minutes | 281 | 132 | $47 | |
G0180 |
Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and | 240 | 167 | $58 | |
99350 |
Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes | 69 | 54 | $197 | |
99345 |
Residence visit for new patient with high level of medical decision making, per day, if using time, at least 75 minutes | 41 | 41 | $215 | |
G0179 |
Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians a | 39 | 28 | $46 | |
99344 |
Residence visit for new patient with moderate level of medical decision making, per day, if using time, at least 60 minutes | 35 | 35 | $152 | |
99497 |
Advance care planning, first 30 minutes | 27 | 27 | $87 |
In context: peer comparison
Among 13 peers in Santa Ana Internal Medicine Physician, average services per provider: 193. This provider delivers 7.3× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,968
Patients
466
Total drug cost
$82,206
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 269 | 55 | $3,448 |
| Levothyroxine Sodium | Generic | 229 | 57 | $3,150 |
| Amlodipine Besylate | Generic | 225 | 47 | $2,067 |
| Furosemide | Generic | 156 | 44 | $1,080 |
| Losartan Potassium | Generic | 141 | 33 | $1,895 |
| Gabapentin | Generic | 137 | 28 | $2,535 |
| Trazodone Hcl | Generic | 109 | 28 | $1,190 |
| Escitalopram Oxalate | Generic | 97 | 25 | $1,532 |
| Donepezil Hcl | Generic | 94 | 19 | $1,454 |
| Lisinopril | Generic | 93 | 19 | $770 |
Frequently asked questions
What is Dr. John Feng's medical specialty?
Dr. John Feng practices Internal Medicine Physician in Santa Ana, CA.
Where does Dr. John Feng practice?
Dr. John Feng practices at 3401 W Sunflower Ave Ste 100, Santa Ana, CA 92704. Office phone: 8887899585.
What is Dr. John Feng's NPI?
Dr. John Feng's National Provider Identifier (NPI) is 1346660081, issued by NPPES.
What procedures does Dr. John Feng commonly perform?
Top Medicare-reported procedures in 2023: Residence visit for established patient with low level of medical decision making (HCPCS 99348); Residence visit for established patient with moderate level of medical decision making (HCPCS 99349); Residence visit for established patient with straightforward medical decision making (HCPCS 99347). Source: CMS Medicare Physician & Other Practitioners file.