DR. ANGELA KOIVULA PH.D.
NPI 1538603964
Psychologist - Counseling in Durham, NC

NPI Status: Active since December 04, 2016

Contact Information

508 FULTON ST
DURHAM, NC
ZIP 27705
Phone: (919) 286-0411

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NPPES record last updated: July 11, 2025. Verified against the NPPES registry weekly; last sync: July 12, 2026.

Record update history: Jul 11, 2025, Jan 8, 2022, Nov 13, 2020 and 1 more (4 updates tracked since 2019).

  • Individual
  • Female
  • Psychologist
  • Counseling

About ANGELA KOIVULA

This page provides the complete NPI Profile along with additional information for Angela Koivula, a provider established in Durham, North Carolina with a medical specialization in Psychologist, focusing in counseling . The healthcare provider is registered in the NPI registry with number 1538603964 assigned on December 2016. The practitioner's primary taxonomy code is 103TC1900X with license number PY9897 (FL). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1538603964
Provider Name
DR. ANGELA KOIVULA PH.D.
Gender
Female
Entity Type
Individual
Location Address
508 FULTON ST DURHAM, NC 27705
Location Phone
(919) 286-0411
Mailing Address
1918 MEETING ST DURHAM, NC 27705
Mailing Phone
(352) 474-8876
Is Sole Proprietor?
Yes
Enumeration Date
12-04-2016
Last Update Date
07-11-2025
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Location Map

Secondary Locations

  • 9200 NW 39th Ave Ste 130-3062
    Gainesville, FL 32606
    (352) 474-8876

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

Psychologist Counseling

Taxonomy Code
103TC1900X
Type
Behavioral Health & Social Service Providers
License No.
PY9897
License State
FL
Taxonomy Description
A psychologist who specializes in general practice and health service. It focuses on how people function both personally and in their relationships at all ages. Counseling psychology addresses the emotional, social, work, school and physical health concerns people may have at different stages in their lives, focusing on typical life stresses and more severe issues with which people may struggle as individuals and as a part of families, groups and organizations. Counseling psychologists help people with physical, emotional and mental health issues improve their sense of well-being, alleviate feelings of distress and resolve crises. They also provide assessment, diagnosis, and treatment of more severe psychological symptoms.

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)
1103T00000XBehavioral Health & Social Service Providers

Psychologist

PY9897 (FL)

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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 1538603964, 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
5
Unchanged
Pos 3
3
Doubled → 6
Pos 4
8
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
0
Unchanged
Pos 7
3
Doubled → 6
Pos 8
9
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
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 3 → 6 6 → 12 → 3 3 → 6 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 6 + 8 + 1 + 2 + 0 + 6 + 9 + 1 + 2 + 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 1538603964.

Other Providers at the Same Location


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

Physical Therapist
508 FULTON ST
DURHAM, NC 27705
Physician Assistant (Surgical)
508 FULTON ST
DURHAM, NC 27705
Physician Assistant (Medical)
508 FULTON ST
DURHAM, NC 27705
Physician Assistant
508 FULTON ST, MEDICAL SERVICE (111)
DURHAM, NC 27705
Physician Assistant (Medical)
508 FULTON ST
DURHAM, NC 27705
Social Worker (Clinical)
508 FULTON ST, 11C
DURHAM, NC 27705
Physician Assistant
508 FULTON ST
DURHAM, NC 27705
Psychiatry & Neurology (Geriatric Psychiatry)
508 FULTON ST, DURHAM VA MEDICAL CENTER, MAIL STATION 116A
DURHAM, NC 27705
Dietitian, Registered
508 FULTON ST
DURHAM, NC 27705
Physician Assistant (Medical)
508 FULTON ST
DURHAM, NC 27705
Registered Nurse (Diabetes Educator)
508 FULTON ST
DURHAM, NC 27705
Psychiatry & Neurology (Psychiatry)
508 FULTON ST, DVAMC, MHSL (116)
DURHAM, NC 27705
Physician Assistant (Surgical)
508 FULTON ST
DURHAM, NC 27705
Internal Medicine
508 FULTON ST, AMBULATORY CARE (11C), DURHAM VAMC
DURHAM, NC 27705
Psychiatry & Neurology (Psychiatry)
508 FULTON ST
DURHAM, NC 27705
Psychologist (Clinical)
508 FULTON ST, VA MEDICAL CENTER (116B)
DURHAM, NC 27705
Psychologist (Clinical)
508 FULTON ST, (116B)
DURHAM, NC 27705
Dietitian, Registered
508 FULTON ST
DURHAM, NC 27705
Nurse Practitioner (Family)
508 FULTON ST
DURHAM, NC 27705
Physical Therapist
508 FULTON ST
DURHAM, NC 27705

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1538603964, enumerated as an "individual" on December 04, 2016.

The provider is located at 508 FULTON ST DURHAM, NC 27705 and the phone number is (919) 286-0411.

Psychologist with taxonomy code 103TC1900X and a focus in Counseling.