DR. CHRISTOPHER JOSEPH DUNN M.D.
NPI 1386724276
Internal Medicine in Redwood City, CA
NPI Status: Active since October 16, 2006
Contact Information
2900 WHIPPLE AVE
SUITE 115
REDWOOD CITY, CA
ZIP 94062
Phone: (650) 299-0581
Fax: (650) 366-7619
- Individual
- Male
- Internal Medicine
About CHRISTOPHER DUNN
This page provides the complete NPI Profile along with additional information for Christopher Dunn, an internist established in Redwood City, California with a medical specialization in Internal Medicine. The healthcare provider is registered in the NPI registry with number 1386724276 assigned on October 2006. The practitioner's primary taxonomy code is 207R00000X with license number G 39621 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1386724276
- Provider Name
- DR. CHRISTOPHER JOSEPH DUNN M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 2900 WHIPPLE AVE SUITE 115 REDWOOD CITY, CA 94062
- Location Phone
- (650) 299-0581
- Location Fax
- (650) 366-7619
- Mailing Address
- 320 KINGS MOUNTAIN RD WOODSIDE, CA 94062
- Mailing Phone
- (650) 619-2475
- Mailing Fax
- (650) 366-7619
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 10-16-2006
- Last Update Date
- 09-11-2025
- Code Navigator
An internist like Christopher Dunn is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.
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
Internal Medicine
- Taxonomy Code
- 207R00000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- G 39621
- License State
- CA
- Taxonomy Description
- A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
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 | 207RC0200X | Allopathic & Osteopathic Physicians | Internal Medicine | G 39621 (CA) |
| 2 | 207RP1001X | Allopathic & Osteopathic Physicians | Internal Medicine | G 39621 (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 1386724276, we treat the final digit (6) 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 6).
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 64 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
REDWOOD CITY, CA 94062
REDWOOD CITY, CA 94062
REDWOOD CITY, CA 94062
REDWOOD CITY, CA 94062
REDWOOD CITY, CA 94062
REDWOOD CITY, CA 94062
REDWOOD CITY, CA 94062
REDWOOD CITY, CA 94062
REDWOOD CITY, CA 94062
REDWOOD CITY, CA 94062
REDWOOD CITY, CA 94062
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1386724276, enumerated as an "individual" on October 16, 2006.
The provider is located at 2900 WHIPPLE AVE SUITE 115 REDWOOD CITY, CA 94062 and the phone number is (650) 299-0581.
Internal Medicine with taxonomy code 207R00000X.
