Doris Alan
Doris Alan is a Family Nurse Practitioner provider (Nurse Practitioner) practicing in Upland, CA, registered in the NPPES registry with NPI 1558023754 since 2021. Practices at Inland Empire Obgyn Registry Inc (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1558023754 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Doris Alan |
| Sex | Female |
| Practice address | Upland, CA, 91786 |
| Phone | 9095790806 |
| Enumeration date | 2021-10-06 |
| Last updated in NPPES | 2021-10-06 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 363LF0000X | Family Nurse Practitioner | Primary | 95018686 | CA |
Copy-ready billing details
Provider: Doris Alan NPI: 1558023754 Taxonomy: 363LF0000X (Family Nurse Practitioner) Address: Upland, CA, 91786
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1477731677 | Joanna Du | Individual | Obstetrics & Gynecology Physician | Upland, CA |
| 1114318151 | Cecilia Phong | Individual | Obstetrics & Gynecology Physician | Upland, CA |
| 1619600574 | Inland Empire Obgyn Registry Inc | Organization | Obstetrics & Gynecology Physician | Upland, CA |
| 1154215101 | Andrea Alvarez | Individual | Family Nurse Practitioner | Upland, CA |
| 1801752290 | Jewelry Tran | Individual | Nurse Practitioner | Upland, CA |
Verify this record
Cross-check NPI 1558023754 against the authoritative CMS record: view Doris Alan on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2021-10-06.