DR. CHEN I CHEN PHARM.D.
NPI 1609012129
Pharmacist - Geriatric in San Marino, CA

NPI Status: Active since January 06, 2009

Contact Information

2921 SHEFFIELD RD
SAN MARINO, CA
ZIP 91108
Phone: (626) 309-9899

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  • Individual
  • Male
  • Pharmacist
  • Geriatric

About CHEN CHEN

This page provides the complete NPI Profile along with additional information for Chen Chen, a provider established in San Marino, California with a medical specialization in Pharmacist, focusing in geriatric . The healthcare provider is registered in the NPI registry with number 1609012129 assigned on January 2009. The practitioner's primary taxonomy code is 1835G0303X with license number 61539 (CA). The provider is registered as an individual and his NPI record was last updated 17 years ago.

NPI
1609012129
Provider Name
DR. CHEN I CHEN PHARM.D.
Gender
Male
Entity Type
Individual
Location Address
2921 SHEFFIELD RD SAN MARINO, CA 91108
Location Phone
(626) 309-9899
Mailing Address
2921 SHEFFIELD RD SAN MARINO, CA 91108
Mailing Phone
(626) 309-9899
Is Sole Proprietor?
Yes
Enumeration Date
01-06-2009
Last Update Date
01-06-2009
Code Navigator

A pharmacist like Chen Chen fills prescription medications, verifying instructions from physicians and offers expertise in the safe use of prescriptions. Pharmacists instruct patients on how to take a prescribed medicine and educate patients about potential side effects. Pharmacists might also conduct health and wellness screenings, provide immunizations, oversee the medications given to patients, and provide advice on healthy lifestyles.

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

Pharmacist Geriatric

Taxonomy Code
1835G0303X
Type
Pharmacy Service Providers
License No.
61539
License State
CA
Taxonomy Description
A pharmacist who is certified in geriatric pharmacy practice is designated as a Certified Geriatric Pharmacist (CGP). To become certified, candidates are expected to be knowledgeable about principles of geriatric pharmacotherapy and the provision of pharmaceutical care to the elderly.

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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 1609012129, we treat the final digit (9) 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 51. The final step is to find the difference between that total and the next multiple of ten (60 - 51 = 9).

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.

Pos 1
1
Doubled → 2
Pos 2
6
Unchanged
Pos 3
0
Doubled → 0
Pos 4
9
Unchanged
Pos 5
0
Doubled → 0
Pos 6
1
Unchanged
Pos 7
2
Doubled → 4
Pos 8
1
Unchanged
Pos 9
2
Doubled → 4
Check
9
Target digit
Regular digit Doubled digit Check digit

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.

1 → 2 0 → 0 0 → 0 2 → 4 2 → 4

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 6 + 0 + 9 + 0 + 1 + 4 + 1 + 4 + 24 = 51

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 51 is 60. The difference is the calculated check digit.

60 - 51 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1609012129.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1609012129, enumerated as an "individual" on January 06, 2009.

The provider is located at 2921 SHEFFIELD RD SAN MARINO, CA 91108 and the phone number is (626) 309-9899.

Pharmacist with taxonomy code 1835G0303X and a focus in Geriatric.