Abraham Harn, DO
Abraham Harn, DO is an Internal Medicine Physician in Anaheim, CA, registered under NPI 1003337122. 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 Anaheim, based on OpenStreetMap data collected Sep 19, 2026. Parking is available about 0.51 mi away. The nearest transit stop is 734 ft away, served by La Palma-West.
Getting here and what is nearby
Transit La Palma-Lido 87 ft ~1 min
Transit La Palma-Laguna 129 ft ~1 min
Transit La Palma-West 734 ft ~3 min
Gas station Mobil 0.36 mi ~8 min
Restaurant La Palma Chicken Pie Shop 0.39 mi ~8 min
928 N Euclid Street, Anaheim 92801
Gas station Arco 0.41 mi ~9 min
Convenience ampm 0.43 mi ~9 min
Restaurant IHOP 0.43 mi ~9 min
839 North Euclid Street, Anaheim 92801
Restaurant Kaiba Japanese Ramen, Sushi & Grill 0.44 mi ~9 min
820 North Euclid Street, Anaheim 92801
Convenience Food Mart 0.45 mi ~9 min
Gas station 76 0.46 mi ~10 min
Parking 0.49 mi ~10 min
Parking 0.50 mi ~11 min
Parking 0.51 mi ~11 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 |
|---|---|---|
| 20A17487 | CA | Internal Medicine Physician primary |
This provider holds licence 20A17487 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 - Internal Medicine
- PAC ID
- 9931521267
- Enrollment ID
- I20200615002709
Medicare enrolment is recorded as approved under the provider type Practitioner - Internal 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 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
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 | 1003337122 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 28, 2017 |
| Last updated | Jul 2, 2020 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | DO |
| Practice address |
1211 W LA PALMA AVE STE 404 Anaheim, CA 92801 (714) 772-8282 Fax (714) 772-6493 |
| Mailing address |
PO BOX 15090 Anaheim, CA 92803 |
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 | 3 | 3 | 7 | 1 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 3 | 5 | 1 | 4 |
Sum = 48 · next multiple of 10 = 50 · check digit = 2 · actual last digit = 2
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.