SEBASTIAN ORDONEZ I
NPI 1225955347
Neurological Surgery in San Juan, PR

NPI Status: Active since June 30, 2026

Contact Information

BARRIO MONACILLOS 0001 PR SAN JUAN 00935
SAN JUAN, PR
ZIP 00935
Phone: (787) 777-3535

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  • Individual
  • Male
  • Neurological Surgery

About SEBASTIAN ORDONEZ

This page provides the complete NPI Profile along with additional information for Sebastian Ordonez, a provider established in San Juan, Puerto Rico with a medical specialization in Neurological Surgery. The healthcare provider is registered in the NPI registry with number 1225955347 assigned on June 2026. The practitioner's primary taxonomy code is 207T00000X with license number 439-E (PR). The provider is registered as an individual and his NPI record was last updated July 2026.

NPI
1225955347
Provider Name
SEBASTIAN ORDONEZ I
Gender
Male
Entity Type
Individual
Location Address
BARRIO MONACILLOS 0001 PR SAN JUAN 00935 SAN JUAN, PR 00935
Location Phone
(787) 777-3535
Mailing Address
BARRIO MONACILLOS 0001 PR SAN JUAN 00935 SAN JUAN, PR 00935
Mailing Phone
(787) 364-0645
Is Sole Proprietor?
Yes
Enumeration Date
06-30-2026
Last Update Date
07-01-2026
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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

Neurological Surgery

Taxonomy Code
207T00000X
Type
Allopathic & Osteopathic Physicians
License No.
439-E
License State
PR
Taxonomy Description
A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.

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)
1390200000XStudent, Health Care

Student in an Organized Health Care Education/Training Program

439-E (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 1225955347, 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
2
Unchanged
Pos 3
2
Doubled → 4
Pos 4
5
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
5
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
3
Unchanged
Pos 9
4
Doubled → 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 2 → 4 9 → 18 → 9 5 → 10 → 1 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 4 + 5 + 1 + 8 + 5 + 1 + 0 + 3 + 8 + 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 1225955347.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1225955347, enumerated as an "individual" on June 30, 2026.

The provider is located at BARRIO MONACILLOS 0001 PR SAN JUAN 00935 SAN JUAN, PR 00935 and the phone number is (787) 777-3535.

Neurological Surgery with taxonomy code 207T00000X.