OAK TREE DERMATOLOGY
OAK TREE DERMATOLOGY is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003564089, based in Pomona, CA. It is classified under Dermatopathology Physician.
Getting there
Here is what surrounds this office in Pomona, based on OpenStreetMap data collected Oct 6, 2026. Parking is available about 0.27 mi away. The nearest transit stop is 0.42 mi away.
Getting here and what is nearby
Gas station Shell 713 ft ~3 min
Gas station Chevron 928 ft ~4 min
Parking 0.20 mi ~5 min
Parking 0.21 mi ~5 min
Transit 0.23 mi ~5 min
Parking 0.27 mi ~6 min
Grocery Smart & Final 0.27 mi ~6 min
Transit 0.42 mi ~9 min
Restaurant Donahoo’s Golden Chicken 0.47 mi ~10 min
1074 North Garey Avenue, 91767
Mo-Su 10:00-19:30
Grocery Stater Bros. Markets 0.49 mi ~10 min
1045 North Garey Avenue, Pomona 91767
Mo-Su 06:00-23:00
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
- Status
- Approved
- Provider type
- Part B Supplier - Clinic/group Practice
- PAC ID
- 3274910120
- Enrollment ID
- O20220513001771
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Clinic/group Practice. 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 Dermatopathology covers
A dermatopathologist has the expertise to diagnose and monitor diseases of the skin including infectious, immunologic, degenerative and neoplastic diseases. This entails the examination and interpretation of specially prepared tissue sections, cellular scrapings and smears of skin lesions by means of routine and special (electron and fluorescent) microscopes. NUCC Health Care Provider Taxonomy, code 207ND0900X
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1003564089 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Mar 17, 2022 |
| Last updated | Jun 13, 2022 |
| Status | Active |
| Practice address |
160 E ARTESIA ST STE 325 Pomona, CA 91767 (909) 620-5300 Fax (909) 620-8900 |
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 | 5 | 6 | 4 | 0 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 6 | 8 | 0 | 7 |
Sum = 51 · next multiple of 10 = 60 · check digit = 9 · actual last digit = 9
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.