JOSEPH K PHAN
NPI 1205410131
Social Worker in San Jose, CA
NPI Status: Active since May 06, 2021
Contact Information
2670 S WHITE RD STE 200
SAN JOSE, CA
ZIP 95148
Phone: (408) 937-1553
- Individual
- Male
- Social Worker
About JOSEPH PHAN
This page provides the complete NPI Profile along with additional information for Joseph Phan, a provider established in San Jose, California with a medical specialization in Social Worker. The healthcare provider is registered in the NPI registry with number 1205410131 assigned on May 2021. The practitioner's primary taxonomy code is 104100000X with license number 135853 (CA). The provider is registered as an individual and his NPI record was last updated February 2026.
- NPI
- 1205410131
- Provider Name
- JOSEPH K PHAN
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 2670 S WHITE RD STE 200 SAN JOSE, CA 95148
- Location Phone
- (408) 937-1553
- Mailing Address
- 2670 S WHITE RD STE 200 SAN JOSE, CA 95148
- Mailing Phone
- (408) 937-1553
- Mailing Fax
- Is Sole Proprietor?
- No
- Enumeration Date
- 05-06-2021
- Last Update Date
- 02-10-2026
- Code Navigator
A social worker like Joseph Phan helps patients solve and cope with problems in their everyday lives, diagnoses and treats mental, behavioral, and emotional problems. Social workers help in wide range of situations, such as adopting a child, illness, divorce, or unemployment.
Location Map
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Social Worker
- Taxonomy Code
- 104100000X
- Type
- Behavioral Health & Social Service Providers
- License No.
- 135853
- License State
- CA
- Taxonomy Description
- A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 171M00000X | Other Service Providers | Case Manager/Care Coordinator | (CA) |
| 2 | 225400000X | Respiratory, Developmental, Rehabilitative and Restorative Service Providers | Rehabilitation Practitioner | (CA) |
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NPI NPI Number Validation
How NPI Validation Works
The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.
To verify the NPI 1205410131, we treat the final digit (1) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 49. The final step is to find the difference between that total and the next multiple of ten (50 - 49 = 1).
Digit-by-digit view
Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.
Step 1: Double every other digit from the right
Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 49 is 50. The difference is the calculated check digit.
Other Providers at the Same Location
The following 19 providers are registered at the same or a nearby location.
SAN JOSE, CA 95148
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1205410131, enumerated as an "individual" on May 06, 2021.
The provider is located at 2670 S WHITE RD STE 200 SAN JOSE, CA 95148 and the phone number is (408) 937-1553.
Social Worker with taxonomy code 104100000X.
