LAWRENCE KNAPP M.D.
NPI 1104061043
Clinic/Center - Emergency Care in Corte Madera, CA

NPI Status: Active since December 05, 2008

Contact Information

20 OAK LN
CORTE MADERA, CA
ZIP 94925
Phone: (415) 924-2001
Fax: (415) 924-2001

Get Directions Write a Review

  • Individual
  • Male
  • Clinic/Center
  • Emergency Care

About LAWRENCE KNAPP

This page provides the complete NPI Profile along with additional information for Lawrence Knapp, a provider established in Corte Madera, California with a medical specialization in Clinic/center, focusing in emergency care . The healthcare provider is registered in the NPI registry with number 1104061043 assigned on December 2008. The practitioner's primary taxonomy code is 261QE0002X with license number G18650 (CA). The provider is registered as an individual and his NPI record was last updated 18 years ago.

NPI
1104061043
Provider Name
LAWRENCE KNAPP M.D.
Gender
Male
Entity Type
Individual
Location Address
20 OAK LN CORTE MADERA, CA 94925
Location Phone
(415) 924-2001
Location Fax
(415) 924-2001
Mailing Address
20 OAK LN CORTE MADERA, CA 94925
Mailing Phone
(415) 924-2001
Mailing Fax
(415) 924-2001
Is Sole Proprietor?
Yes
Enumeration Date
12-05-2008
Last Update Date
12-05-2008
Code Navigator

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

Clinic/Center Emergency Care

Taxonomy Code
261QE0002X
Type
Ambulatory Health Care Facilities
License No.
G18650
License State
CA

Reviews for LAWRENCE KNAPP M.D.

There are currently no reviews for this provider. Be the first person to share your experience with this provider by filling out our review form. Your insights are appreciated and will help others make informed decisions.

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 1104061043, we treat the final digit (3) 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 47. The final step is to find the difference between that total and the next multiple of ten (50 - 47 = 3).

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

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 0 + 4 + 0 + 6 + 2 + 0 + 8 + 24 = 47

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

The next multiple of ten after 47 is 50. The difference is the calculated check digit.

50 - 47 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1104061043.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1104061043, enumerated as an "individual" on December 05, 2008.

The provider is located at 20 OAK LN CORTE MADERA, CA 94925 and the phone number is (415) 924-2001.

Clinic/Center with taxonomy code 261QE0002X and a focus in Emergency Care.