DR. KAREN ELAINE LOVDAHL PH.D.
NPI 1548475965
Psychologist - Clinical Child & Adolescent in San Francisco, CA

NPI Status: Active since May 10, 2007

Contact Information

3059 FILLMORE ST
SAN FRANCISCO, CA
ZIP 94123
Phone: (415) 281-0888

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  • Individual
  • Female
  • Psychologist
  • Clinical Child & Adolescent

About KAREN LOVDAHL

This page provides the complete NPI Profile along with additional information for Karen Lovdahl, a provider established in San Francisco, California with a medical specialization in Psychologist, focusing in clinical child & adolescent . The healthcare provider is registered in the NPI registry with number 1548475965 assigned on May 2007. The practitioner's primary taxonomy code is 103TC2200X with license number PSY8269 (CA). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1548475965
Provider Name
DR. KAREN ELAINE LOVDAHL PH.D.
Gender
Female
Entity Type
Individual
Location Address
3059 FILLMORE ST SAN FRANCISCO, CA 94123
Location Phone
(415) 281-0888
Mailing Address
3059 FILLMORE ST SAN FRANCISCO, CA 94123
Mailing Phone
(415) 281-0888
Is Sole Proprietor?
Yes
Enumeration Date
05-10-2007
Last Update Date
09-11-2025
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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

Psychologist Clinical Child & Adolescent

Taxonomy Code
103TC2200X
Type
Behavioral Health & Social Service Providers
License No.
PSY8269
License State
CA
Taxonomy Description
A psychologist who develops and applies scientific knowledge to the delivery of psychological services to infants, toddlers, children and adolescents within their social context. Of particular importance to the specialty of clinical child psychology is an understanding of the basic psychological needs of children and adolescents, and how the family and other social contexts influence the socio-emotional adjustment, cognitive development, behavioral adaptation and health status of children and adolescents.

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)
1103TC0700XBehavioral Health & Social Service Providers

Psychologist
Clinical

PSY8269 (CA)

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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 1548475965, we treat the final digit (5) 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 75. The final step is to find the difference between that total and the next multiple of ten (80 - 75 = 5).

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
4
Doubled → 8
Pos 4
8
Unchanged
Pos 5
4
Doubled → 8
Pos 6
7
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
9
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
5
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 4 → 8 5 → 10 → 1 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 + 8 + 8 + 8 + 7 + 1 + 0 + 9 + 1 + 2 + 24 = 75

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

The next multiple of ten after 75 is 80. The difference is the calculated check digit.

80 - 75 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1548475965.

Other Providers at the Same Location


The following 11 providers are registered at the same or a nearby location.

Psychiatry & Neurology (Psychiatry)
3059 FILLMORE ST
SAN FRANCISCO, CA 94123
Psychiatry & Neurology (Psychiatry)
3059 FILLMORE ST
SAN FRANCISCO, CA 94123
Psychologist (Counseling)
3059 FILLMORE ST
SAN FRANCISCO, CA 94123
Marriage & Family Therapist
3059 FILLMORE ST
SAN FRANCISCO, CA 94123
Counselor (Mental Health)
3059 FILLMORE ST
SAN FRANCISCO, CA 94123
Counselor (Professional)
3059 FILLMORE ST
SAN FRANCISCO, CA 94123
Marriage & Family Therapist
3059 FILLMORE ST
SAN FRANCISCO, CA 94123
Marriage & Family Therapist
3059 FILLMORE ST
SAN FRANCISCO, CA 94123
Marriage & Family Therapist
3059 FILLMORE ST
SAN FRANCISCO, CA 94123
Marriage & Family Therapist
3059 FILLMORE ST
SAN FRANCISCO, CA 94123
Psychologist (Counseling)
3059 FILLMORE ST
SAN FRANCISCO, CA 94123

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1548475965, enumerated as an "individual" on May 10, 2007.

The provider is located at 3059 FILLMORE ST SAN FRANCISCO, CA 94123 and the phone number is (415) 281-0888.

Psychologist with taxonomy code 103TC2200X and a focus in Clinical Child & Adolescent.