DR. DAVID REESE HOLBROOKE M.D.
NPI 1265720411
General Practice in Sausalito, CA

NPI Status: Active since July 20, 2011

Contact Information

120 BULKLEY AVE
#405
SAUSALITO, CA
ZIP 94965
Phone: (415) 331-3883
Fax: (415) 331-8778

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  • Individual
  • Male
  • General Practice

About DAVID HOLBROOKE

This page provides the complete NPI Profile along with additional information for David Holbrooke, a primary care provider established in Sausalito, California with a medical specialization in General Practice. The healthcare provider is registered in the NPI registry with number 1265720411 assigned on July 2011. The practitioner's primary taxonomy code is 208D00000X with license number G18811 (CA). The provider is registered as an individual and his NPI record was last updated 15 years ago.

NPI
1265720411
Provider Name
DR. DAVID REESE HOLBROOKE M.D.
Gender
Male
Entity Type
Individual
Location Address
120 BULKLEY AVE #405 SAUSALITO, CA 94965
Location Phone
(415) 331-3883
Location Fax
(415) 331-8778
Mailing Address
685 SPRING ST #112 FRIDAY HARBOR, WA 98250
Mailing Phone
(415) 331-3883
Mailing Fax
(415) 331-8778
Is Sole Proprietor?
Yes
Enumeration Date
07-20-2011
Last Update Date
07-20-2011
Code Navigator

A primary care provider (PCP) like David Holbrooke sees people with common medical problems. The primary care provider might be a doctor, physician assistant, nurse practitioner or clinic that are usually involved in your long-term care. A PCP might provide preventive care, treat common medical conditions, identify urgent medical problems and refer you to specialists when necessary. Primary care is usually provided in an outpatient facility but if you are admitted to a hospital your PCP may assist in your care. The most common medical conditions seen by primary care providers are: hypertension, upper respiratory tract infections, depression or anxiety, back pain, arthritis, dermatitis, diabetes, urinary tract infections, etc .

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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

General Practice

Taxonomy Code
208D00000X
Type
Allopathic & Osteopathic Physicians
License No.
G18811
License State
CA
Taxonomy Description
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. Source: National Uniform Claim Committee

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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 1265720411, 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.

Pos 1
1
Doubled → 2
Pos 2
2
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
5
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
2
Unchanged
Pos 7
0
Doubled → 0
Pos 8
4
Unchanged
Pos 9
1
Doubled → 2
Check
1
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 6 → 12 → 3 7 → 14 → 5 0 → 0 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 1 + 2 + 5 + 1 + 4 + 2 + 0 + 4 + 2 + 24 = 49

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.

50 - 49 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1265720411.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1265720411, enumerated as an "individual" on July 20, 2011.

The provider is located at 120 BULKLEY AVE #405 SAUSALITO, CA 94965 and the phone number is (415) 331-3883.

General Practice with taxonomy code 208D00000X.