NATALIA E ALMODOVAR ARBELO MD
NPI 1114381902
Internal Medicine - Hematology & Oncology in San Juan, PR

NPI Status: Active since April 08, 2016

Contact Information

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

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  • Individual
  • Female
  • Internal Medicine
  • Hematology & Oncology

About NATALIA ALMODOVAR ARBELO

This page provides the complete NPI Profile along with additional information for Natalia Almodovar Arbelo, an internist established in San Juan, Puerto Rico with a medical specialization in Internal Medicine, focusing in hematology & oncology . The healthcare provider is registered in the NPI registry with number 1114381902 assigned on April 2016. The practitioner's primary taxonomy code is 207RH0003X with license number 21293 (PR). The provider is registered as an individual and her NPI record was last updated May 2026.

NPI
1114381902
Provider Name
NATALIA E ALMODOVAR ARBELO MD
Gender
Female
Entity Type
Individual
Location Address
10 CALLE CASIA SAN JUAN, PR 00921
Location Phone
(787) 641-7582
Location Fax
(787) 641-4561
Mailing Address
10 CALLE CASIA SAN JUAN, PR 00921
Mailing Phone
(787) 641-7582
Mailing Fax
(787) 641-4561
Is Sole Proprietor?
No
Enumeration Date
04-08-2016
Last Update Date
05-19-2026
Code Navigator

An internist like Natalia Almodovar Arbelo is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

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

Internal Medicine Hematology & Oncology

Taxonomy Code
207RH0003X
Type
Allopathic & Osteopathic Physicians
License No.
21293
License State
PR
Taxonomy Description
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

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

21293 (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 1114381902, we treat the final digit (2) 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 58. The final step is to find the difference between that total and the next multiple of ten (60 - 58 = 2).

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

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 2 + 4 + 6 + 8 + 2 + 9 + 0 + 24 = 58

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

The next multiple of ten after 58 is 60. The difference is the calculated check digit.

60 - 58 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1114381902.

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
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
Internal Medicine (Infectious Disease)
10 CALLE CASIA
SAN JUAN, PR 00921

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1114381902, enumerated as an "individual" on April 08, 2016.

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

Internal Medicine with taxonomy code 207RH0003X and a focus in Hematology & Oncology.