DR. CHRISTOPHER JOHN GRESENS MD
NPI 1508383597
Pathology - Blood Banking & Transfusion Medicine in Mather, CA

NPI Status: Active since August 29, 2017

Contact Information

10536 PETER A MCCUEN BLVD
MATHER, CA
ZIP 95655
Phone: (916) 453-3728
Fax: (916) 366-0794

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  • Individual
  • Male
  • Pathology
  • Blood Banking & Transfusion Medicine

About CHRISTOPHER GRESENS

This page provides the complete NPI Profile along with additional information for Christopher Gresens, a provider established in Mather, California with a medical specialization in Pathology, focusing in blood banking & transfusion medicine . The healthcare provider is registered in the NPI registry with number 1508383597 assigned on August 2017. The practitioner's primary taxonomy code is 207ZB0001X with license number G76804 (DE). The provider is registered as an individual and his NPI record was last updated 4 years ago.

NPI
1508383597
Provider Name
DR. CHRISTOPHER JOHN GRESENS MD
Gender
Male
Entity Type
Individual
Location Address
10536 PETER A MCCUEN BLVD MATHER, CA 95655
Location Phone
(916) 453-3728
Location Fax
(916) 366-0794
Mailing Address
10536 PETER A MCCUEN BLVD MATHER, CA 95655
Mailing Phone
(916) 453-3728
Mailing Fax
(916) 366-0794
Is Sole Proprietor?
No
Enumeration Date
08-29-2017
Last Update Date
07-21-2022
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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

Pathology Blood Banking & Transfusion Medicine

Taxonomy Code
207ZB0001X
Type
Allopathic & Osteopathic Physicians
License No.
G76804
License State
DE
Taxonomy Description
A physician who specializes in blood banking/transfusion medicine is responsible for the maintenance of an adequate blood supply, blood donor and patient-recipient safety and appropriate blood utilization. Pre-transfusion compatibility testing and antibody testing assure that blood transfusions, when indicated, are as safe as possible. This physician directs the preparation and safe use of specially prepared blood components, including red blood cells, white blood cells, platelets and plasma constituents, and marrow or stem cells for transplantation.

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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 1508383597, 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 73. The final step is to find the difference between that total and the next multiple of ten (80 - 73 = 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
5
Unchanged
Pos 3
0
Doubled → 0
Pos 4
8
Unchanged
Pos 5
3
Doubled → 6
Pos 6
8
Unchanged
Pos 7
3
Doubled → 6
Pos 8
5
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
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 0 → 0 3 → 6 3 → 6 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 0 + 8 + 6 + 8 + 6 + 5 + 1 + 8 + 24 = 73

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

The next multiple of ten after 73 is 80. The difference is the calculated check digit.

80 - 73 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1508383597.

Other Providers at the Same Location


The following 3 providers are registered at the same or a nearby location.

Pathology (Anatomic Pathology & Clinical Pathology)
10536 PETER A MCCUEN BLVD
MATHER, CA 95655
Clinical Medical Laboratory
10536 PETER A MCCUEN BLVD
MATHER, CA 95655
Clinical Medical Laboratory
10536 PETER A MCCUEN BLVD
MATHER, CA 95655

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1508383597, enumerated as an "individual" on August 29, 2017.

The provider is located at 10536 PETER A MCCUEN BLVD MATHER, CA 95655 and the phone number is (916) 453-3728.

Pathology with taxonomy code 207ZB0001X and a focus in Blood Banking & Transfusion Medicine.