Mary Chen MD Inc
Mary Chen MD Inc is a healthcare organization registered as Internal Medicine Physician in Walnut, CA, holding Type 2 (organization) NPI 1366591174 since 2007. The authorized official on file is Mary Chen, President.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1366591174 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Mary Chen MD Inc |
| Practice address | 18780 AMAR RD, SUITE 107, Walnut, CA, 91789 |
| Phone | 6268106777 |
| Fax | 6268106687 |
| Enumeration date | 2007-01-10 |
| Last updated in NPPES | 2020-04-23 |
Authorized official
| Name | Mary Chen |
|---|---|
| Title | President |
| Phone | 6268106777 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207R00000X | Internal Medicine Physician | Primary | A78207 | CA |
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 00A782070 | Medicaid | CA | — |
Copy-ready billing details
Provider: Mary Chen MD Inc NPI: 1366591174 Taxonomy: 207R00000X (Internal Medicine Physician) Address: 18780 AMAR RD, SUITE 107, Walnut, CA, 91789
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1568445229 | Mary Chen | Individual | Internal Medicine Physician | Walnut, CA |
| 1255465274 | Alma Family Services | Organization | Community/Behavioral Health Agency | Walnut, CA |
| 1730204470 | Africa Arroyo | Individual | Mental Health Counselor | Walnut, CA |
| 1780703785 | Able Hands Inc. | Organization | Home Health Agency | Walnut, CA |
| 1609048917 | Access Home Health Care, Inc,. | Organization | Home Health Agency | Walnut, CA |
| 1982904512 | Erika Robles | Individual | Rehabilitation Practitioner | Walnut, CA |
Verify this record
Cross-check NPI 1366591174 against the authoritative CMS record: view Mary Chen MD Inc 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
What is the NPI number for Mary Chen MD Inc?
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2020-04-23.