SEAN SCHAFER M.D.
NPI 1831517994
Preventive Medicine - Public Health & General Preventive Medicine in Portland, OR

NPI Status: Active since April 04, 2014

Contact Information

800 NE OREGON ST STE 1105
PORTLAND, OR
ZIP 97232
Phone: (971) 673-0181
Fax: (971) 673-0178

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  • Individual
  • Male
  • Preventive Medicine
  • Public Health & General Preventive Medic...

About SEAN SCHAFER

This page provides the complete NPI Profile along with additional information for Sean Schafer, a provider established in Portland, Oregon with a medical specialization in Preventive Medicine, focusing in public health & general preventive medicine . The healthcare provider is registered in the NPI registry with number 1831517994 assigned on April 2014. The practitioner's primary taxonomy code is 2083P0901X with license number MD263422 (OR). The provider is registered as an individual and his NPI record was last updated 12 years ago.

NPI
1831517994
Provider Name
SEAN SCHAFER M.D.
Gender
Male
Entity Type
Individual
Location Address
800 NE OREGON ST STE 1105 PORTLAND, OR 97232
Location Phone
(971) 673-0181
Location Fax
(971) 673-0178
Mailing Address
800 NE OREGON ST STE 1105 PORTLAND, OR 97232
Mailing Phone
(971) 673-0181
Mailing Fax
(971) 673-0178
Is Sole Proprietor?
No
Enumeration Date
04-04-2014
Last Update Date
04-04-2014
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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

Preventive Medicine Public Health & General Preventive Medicine

Taxonomy Code
2083P0901X
Type
Allopathic & Osteopathic Physicians
License No.
MD263422
License State
OR
Taxonomy Description
Public health and general preventive medicine focuses on promoting health, preventing disease, and managing the health of communities and defined populations. These practitioners combine population-based public health skills with knowledge of primary, secondary, and tertiary prevention-oriented clinical practice in a wide variety of settings.

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)
1207Q00000XAllopathic & Osteopathic Physicians

Family Medicine

MD263422 (OR)

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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 1831517994, we treat the final digit (4) 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 66. The final step is to find the difference between that total and the next multiple of ten (70 - 66 = 4).

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
8
Unchanged
Pos 3
3
Doubled → 6
Pos 4
1
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
1
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
9
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
4
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 5 → 10 → 1 7 → 14 → 5 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 6 + 1 + 1 + 0 + 1 + 1 + 4 + 9 + 1 + 8 + 24 = 66

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

The next multiple of ten after 66 is 70. The difference is the calculated check digit.

70 - 66 = 4
This NPI is valid
The calculated check digit is 4, which matches the last digit of 1831517994.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1831517994, enumerated as an "individual" on April 04, 2014.

The provider is located at 800 NE OREGON ST STE 1105 PORTLAND, OR 97232 and the phone number is (971) 673-0181.

Preventive Medicine with taxonomy code 2083P0901X and a focus in Public Health & General Preventive Medicine.