Erika Kalash, D.O.
Erika Kalash, D.O. is an Internal Medicine Physician in Torrance, CA, registered under NPI 1003251471.
Getting there
Here is what surrounds this office in Torrance, based on OpenStreetMap data collected Sep 14, 2026. Parking is available about 0.24 mi away. There is EV charging 0.25 mi from the office — useful if you are driving in from out of town. The nearest transit stop is 0.36 mi away. If you arrive early, there is a coffee shop 0.30 mi away.
Getting here and what is nearby
Parking 892 ft ~4 min
Hotel Sonesta ES Suites 950 ft ~4 min
19901 Prairie Avenue
Parking 984 ft ~4 min
Coffee Berry & Boba 0.21 mi ~5 min
20140 Hawthorne Boulevard
Restaurant Togo's 0.21 mi ~5 min
20022 Hawthorne Boulevard
Restaurant Simply Salad 0.21 mi ~5 min
20140 Hawthorne Boulevard
Restaurant Jollibee 0.23 mi ~5 min
20100 Hawthorne Boulevard
Parking 0.24 mi ~5 min
EV charging 0.25 mi ~5 min
Transit 0.26 mi ~6 min
Gas station Clean Energy 0.29 mi ~6 min
Coffee Starbucks 0.30 mi ~7 min
Convenience 7-Eleven 0.30 mi ~7 min
Grocery Trader Joe's 0.32 mi ~7 min
19720 Hawthorne Boulevard, Torrance 90503
Mo-Su 08:00-21:00
Transit 0.36 mi ~8 min
Transit 0.36 mi ~8 min
Hotel Del Amo Inn 0.44 mi ~9 min
Grocery Walmart Neighborhood Market 0.46 mi ~10 min
19340 Hawthorne Boulevard, Torrance 90503
Mo-Su 06:00-22:00
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 |
|---|---|---|
| OS018232 | PA | Internal Medicine Physician |
| 20A17619 | CA | Internal Medicine Physician primary |
Licences are recorded in 2 states: PA, CA. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Rheumatology
- PAC ID
- 3678869351
- Enrollment ID
- I20191230001879
Medicare enrolment is recorded as approved under the provider type Practitioner - Rheumatology. 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.
Licensed in 2 states
This provider holds licences in 2 states: California and Pennsylvania. The practice address on file is in Torrance, CA, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- 20A17619
- Specialty
- Internal Medicine Physician
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Internal Medicine covers
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs. NUCC Health Care Provider Taxonomy, code 207R00000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207R00000X | Internal Medicine Physician | OS018232 | PA | |
| 207R00000X | Internal Medicine Physician | 20A17619 | CA | primary |
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 | 1003251471 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 30, 2013 |
| Last updated | Nov 12, 2019 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | D.O. |
| Practice address |
3565 DEL AMO BLVD Torrance, CA 90503 (310) 214-0811 |
| Other names |
Erika Joyce Former Legal Business Name |
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 | 2 | 5 | 1 | 4 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 5 | 2 | 4 | 5 |
Sum = 49 · next multiple of 10 = 50 · check digit = 1 · actual last digit = 1
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.