CHRISTOPHER C. DAY
NPI 1144589524
Hospitalist in San Juan, PR

NPI Status: Active since May 07, 2012

Contact Information

10 CALLE CASIA
SAN JUAN, PR
ZIP 00921
Phone: (787) 641-7582
Fax: (787) 641-4561

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  • Individual
  • Male
  • Hospitalist

About CHRISTOPHER DAY

This page provides the complete NPI Profile along with additional information for Christopher Day, a provider established in San Juan, Puerto Rico with a medical specialization in Hospitalist. The healthcare provider is registered in the NPI registry with number 1144589524 assigned on May 2012. The practitioner's primary taxonomy code is 208M00000X with license number 18,723 (PR). The provider is registered as an individual and his NPI record was last updated 11 years ago.

NPI
1144589524
Provider Name
CHRISTOPHER C. DAY
Gender
Male
Entity Type
Individual
Location Address
10 CALLE CASIA SAN JUAN, PR 00921
Location Phone
(787) 641-7582
Location Fax
(787) 641-4561
Mailing Address
B11 CALLE DAGUAO URB. PARQUE DEL RIO CAGUAS, PR 00727
Mailing Phone
(787) 412-5304
Is Sole Proprietor?
Yes
Enumeration Date
05-07-2012
Last Update Date
11-19-2015
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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

Hospitalist

Taxonomy Code
208M00000X
Type
Allopathic & Osteopathic Physicians
License No.
18,723
License State
PR
Taxonomy Description
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

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)
1207R00000XAllopathic & Osteopathic Physicians

Internal Medicine

18723 (PR)

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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 1144589524, 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
1
Unchanged
Pos 3
4
Doubled → 8
Pos 4
4
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
8
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
5
Unchanged
Pos 9
2
Doubled → 4
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 4 → 8 5 → 10 → 1 9 → 18 → 9 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 8 + 4 + 1 + 0 + 8 + 1 + 8 + 5 + 4 + 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 1144589524.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Family Medicine
10 CALLE CASIA
SAN JUAN, PR 00921
Psychiatry & Neurology (Psychiatry)
10 CALLE CASIA
SAN JUAN, PR 00921
Internal Medicine (Hematology & Oncology)
10 CALLE CASIA
SAN JUAN, PR 00921
Pharmacist
10 CALLE CASIA, VA MEDICAL CENTER, PHARMACY SERVICE (119)
SAN JUAN, PR 00921
Radiology (Diagnostic Radiology)
10 CALLE CASIA, VA MEDICAL CENTER
SAN JUAN, PR 00921
Physical Medicine & Rehabilitation
10 CALLE CASIA
SAN JUAN, PR 00921
Internal Medicine
10 CALLE CASIA, VA MEDICAL CENTER
SAN JUAN, PR 00921
Internal Medicine (Hematology & Oncology)
10 CALLE CASIA
SAN JUAN, PR 00921
Physical Medicine & Rehabilitation
10 CALLE CASIA, PMR-117
SAN JUAN, PR 00921
Internal Medicine (Gastroenterology)
10 CALLE CASIA, GASTROENTEROLOGY SECTION (111G-OPA)
SAN JUAN, PR 00921
Internal Medicine (Infectious Disease)
10 CALLE CASIA
SAN JUAN, PR 00921
Internal Medicine (Nephrology)
10 CALLE CASIA, MEDICAL SERVICE (111)
SAN JUAN, PR 00921
Family Medicine (Geriatric Medicine)
10 CALLE CASIA
SAN JUAN, PR 00921
Internal Medicine
10 CALLE CASIA
SAN JUAN, PR 00921
Internal Medicine (Rheumatology)
10 CALLE CASIA, VA MEDICAL CENTER DEPT. OF MEDICINE
SAN JUAN, PR 00921
Hospitalist
10 CALLE CASIA
SAN JUAN, PR 00921
Internal Medicine
10 CALLE CASIA
SAN JUAN, PR 00921
Emergency Medicine
10 CALLE CASIA, VA MEDICAL CENTER
SAN JUAN, PR 00921
Orthopaedic Surgery
10 CALLE CASIA, ATTN: SURGICAL SERVICE (112)
SAN JUAN, PR 00921
Psychiatry & Neurology (Psychiatry)
10 CALLE CASIA, 116A PSYCHIATRY DEPARTMENT
SAN JUAN, PR 00921

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1144589524, enumerated as an "individual" on May 07, 2012.

The provider is located at 10 CALLE CASIA SAN JUAN, PR 00921 and the phone number is (787) 641-7582.

Hospitalist with taxonomy code 208M00000X.