Marisa Oh, D.O.
Marisa Oh, D.O. is a Pediatrics Physician in Los Angeles, CA, registered under NPI 1003144718. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Los Angeles, based on OpenStreetMap data collected Sep 8, 2026. Parking is available about 662 ft away. There is EV charging 0.31 mi from the office — useful if you are driving in from out of town. The nearest transit stop is 455 ft away, served by LA-USC T9. If you arrive early, there is a coffee shop 0.43 mi away.
Getting here and what is nearby
Transit Zonal & State 161 ft ~1 min
Transit Zonal & Biggy 291 ft ~2 min
Transit LA-USC T9 455 ft ~2 min
Parking 465 ft ~2 min
Parking P10 Parking 622 ft ~3 min
Parking 662 ft ~3 min
Restaurant Panda Express 851 ft ~4 min
1969 Zonal Avenue, Los Angeles 90006
Mo-Fr 10:00-15:00
Convenience 7-Eleven 0.25 mi ~6 min
Gas station 76 0.25 mi ~6 min
Restaurant Rollup Teriyaki 0.25 mi ~5 min
1983 Marengo Street, Los Angeles 90033
Mo-Fr 13:00-20:00
Restaurant McDonald's 0.28 mi ~6 min
1716 Marengo Street, Los Angeles 90033-1315
05:00-22:00
EV charging 0.31 mi ~7 min
Gas station Chevron 0.33 mi ~7 min
Gas station C & J 0.42 mi ~9 min
Coffee Starbucks 0.43 mi ~9 min
Hotel Hyatt House LA - University Medical Center 0.43 mi ~9 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 20A11041 | CA | Pediatrics Physician primary |
This provider holds licence 20A11041 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Pediatric Medicine
- PAC ID
- 3779755459
- Enrollment ID
- I20111003000423
Medicare enrolment is recorded as approved under the provider type Practitioner - Pediatric Medicine. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Pediatrics covers
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development. NUCC Health Care Provider Taxonomy, code 208000000X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003144718 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Nov 18, 2009 |
| Last updated | Nov 4, 2021 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | D.O. |
| Practice address |
2020 ZONAL AVE LAC-USC MED CTR- INTERNS/RESIDENTS BUILDING, ROOM 112 Los Angeles, CA 90089 (626) 241-0704 |
| Mailing address |
1107 W DUARTE RD UNIT B Arcadia, CA 91007 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 1 | 4 | 4 | 7 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 4 | 8 | 7 | 2 |
Sum = 52 · next multiple of 10 = 60 · check digit = 8 · actual last digit = 8
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.