CHRISTOPHER PETERSEN PHARMD
NPI 1730068289
Clinical Pharmacology in Palo Alto, CA

NPI Status: Active since August 28, 2025

Contact Information

500 PASTEUR DR
PALO ALTO, CA
ZIP 94304
Phone: (650) 497-1713

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Clinical Pharmacology

About CHRISTOPHER PETERSEN

This page provides the complete NPI Profile along with additional information for Christopher Petersen, a provider established in Palo Alto, California with a medical specialization in Clinical Pharmacology. The healthcare provider is registered in the NPI registry with number 1730068289 assigned on August 2025. The practitioner's primary taxonomy code is 208U00000X with license number RPH79912 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI: 1730068289
Provider Name: CHRISTOPHER PETERSEN PHARMD
Gender: Male
Entity Type: Individual
Location Address: 500 PASTEUR DR PALO ALTO, CA 94304
Location Phone: (650) 497-1713
Mailing Address: 1203 CLARK WAY PALO ALTO, CA 94304
Mailing Phone: (678) 656-7374
Is Sole Proprietor?: No
Enumeration Date: 08-28-2025
Last Update Date: 08-28-2025
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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: Clinical Pharmacology
Taxonomy Code: 208U00000X
Type: Allopathic & Osteopathic Physicians
License No.: RPH79912
License State: CA
Taxonomy Description: Clinical pharmacology encompasses the spectrum of activities related to the discovery, development, regulation, and utilization of safe and effective drugs.

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 1730068289, 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 6

Pos 4

Unchanged

Pos 5

Doubled → 0

Pos 6

Unchanged

Pos 7

Doubled → 16 → 1 + 6

Pos 8

Unchanged

Pos 9

Doubled → 16 → 1 + 6

Check

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 3 → 6 0 → 0 8 → 16 → 7 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 6 + 0 + 0 + 6 + 1 + 6 + 2 + 1 + 6 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9

This NPI is valid

The calculated check digit is 9, which matches the last digit of 1730068289.