FRANCES ZADETTE FUSTER ASTOR MD
NPI 1528631389
Psychiatry & Neurology - Psychiatry in San Juan, PR

NPI Status: Active since July 20, 2021

Contact Information

359 CALLE SAN CLAUDIO
SAN JUAN, PR
ZIP 00926
Phone: (939) 231-7651

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  • Individual
  • Female
  • Psychiatry & Neurology
  • Psychiatry

About FRANCES FUSTER ASTOR

This page provides the complete NPI Profile along with additional information for Frances Fuster Astor, a provider established in San Juan, Puerto Rico with a medical specialization in Psychiatry & Neurology, focusing in psychiatry . The healthcare provider is registered in the NPI registry with number 1528631389 assigned on July 2021. The practitioner's primary taxonomy code is 2084P0800X with license number 23851 (PR). The provider is registered as an individual and her NPI record was last updated March 2026.

NPI
1528631389
Provider Name
FRANCES ZADETTE FUSTER ASTOR MD
Gender
Female
Entity Type
Individual
Location Address
359 CALLE SAN CLAUDIO SAN JUAN, PR 00926
Location Phone
(939) 231-7651
Mailing Address
GA13 CALLE PALMA SOLA GUAYNABO, PR 00966
Is Sole Proprietor?
No
Enumeration Date
07-20-2021
Last Update Date
03-04-2026
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A psychiatrist like Frances Fuster Astor are primary mental health physicians diagnose and treat mental illnesses through psychotherapy, psychoanalysis, hospitalization and medication. Psychiatrist help patients find solutions through changes in their behavioral patterns, explorations of experiences, group and family therapy.

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

Psychiatry & Neurology Psychiatry

Taxonomy Code
2084P0800X
Type
Allopathic & Osteopathic Physicians
License No.
23851
License State
PR
Taxonomy Description
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

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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 1528631389, we treat the final digit (9) 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).

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
2
Doubled → 4
Pos 4
8
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
3
Unchanged
Pos 7
1
Doubled → 2
Pos 8
3
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
Check
9
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 6 → 12 → 3 1 → 2 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 4 + 8 + 1 + 2 + 3 + 2 + 3 + 1 + 6 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1528631389.

Other Providers at the Same Location


The following 7 providers are registered at the same or a nearby location.

Psychologist (Clinical)
359 CALLE SAN CLAUDIO, OFICINA 206, CUPEY PROFESSIONAL MALL
RIO PIEDRAS, PR 00926
Optometrist (Low Vision Rehabilitation)
359 CALLE SAN CLAUDIO, SUITE 305-B
SAN JUAN, PR 00926
Counselor (Professional)
359 CALLE SAN CLAUDIO, STE. 206 CUPEY PROFESSIONAL MALL
SAN JUAN, PR 00926
Psychologist (Clinical)
359 CALLE SAN CLAUDIO, SUITE 206
SAN JUAN, PR 00926
Psychologist (Clinical)
359 CALLE SAN CLAUDIO, STE. 206 CUPEY PROFESSIONAL MALL
SAN JUAN, PR 00926
Speech-Language Pathologist
359 CALLE SAN CLAUDIO
SAN JUAN, PR 00926
Nutritionist (Nutrition, Education)
359 CALLE SAN CLAUDIO, SUITE 205 CUPEY PROFESIONAL MALL
SAN JUAN, PR 00926

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1528631389, enumerated as an "individual" on July 20, 2021.

The provider is located at 359 CALLE SAN CLAUDIO SAN JUAN, PR 00926 and the phone number is (939) 231-7651.

Psychiatry & Neurology with taxonomy code 2084P0800X and a focus in Psychiatry.