DR. MARK MICHAEL SAPIRSTEIN M.D.
NPI 1659485167
Specialist in Longview, WA

NPI Status: Active since August 19, 2006

Contact Information

1106 DOUGLAS ST
SUITE D
LONGVIEW, WA
ZIP 98632
Phone: (360) 423-0088
Fax: (360) 414-7251

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  • Individual
  • Male
  • Specialist

About MARK SAPIRSTEIN

This page provides the complete NPI Profile along with additional information for Mark Sapirstein, a provider established in Longview, Washington with a medical specialization in Specialist. The healthcare provider is registered in the NPI registry with number 1659485167 assigned on August 2006. The practitioner's primary taxonomy code is 174400000X with license number MD00015702 (WA). The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1659485167
Provider Name
DR. MARK MICHAEL SAPIRSTEIN M.D.
Gender
Male
Entity Type
Individual
Location Address
1106 DOUGLAS ST SUITE D LONGVIEW, WA 98632
Location Phone
(360) 423-0088
Location Fax
(360) 414-7251
Mailing Address
1106 DOUGLAS ST SUITE D LONGVIEW, WA 98632
Mailing Phone
(360) 423-0088
Mailing Fax
(360) 414-7251
Is Sole Proprietor?
Yes
Enumeration Date
08-19-2006
Last Update Date
07-09-2007
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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

Specialist

Taxonomy Code
174400000X
Type
Other Service Providers
License No.
MD00015702
License State
WA
Taxonomy Description
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

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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 1659485167, we treat the final digit (7) 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).

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
5
Doubled → 10 → 1 + 0
Pos 4
9
Unchanged
Pos 5
4
Doubled → 8
Pos 6
8
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
1
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
7
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 5 → 10 → 1 4 → 8 5 → 10 → 1 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 0 + 9 + 8 + 8 + 1 + 0 + 1 + 1 + 2 + 24 = 63

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

The next multiple of ten after 63 is 70. The difference is the calculated check digit.

70 - 63 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1659485167.

Other Providers at the Same Location


The following 2 providers are registered at the same or a nearby location.

Specialist
1106 DOUGLAS ST, STE F
LONGVIEW, WA 98632
Family Medicine (Adult Medicine)
1106 DOUGLAS ST, STE D
LONGVIEW, WA 98632

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1659485167, enumerated as an "individual" on August 19, 2006.

The provider is located at 1106 DOUGLAS ST SUITE D LONGVIEW, WA 98632 and the phone number is (360) 423-0088.

Specialist with taxonomy code 174400000X.