TACKLE TALK SPEECH THERAPY
NPI 1912247636
Speech-Language Pathologist in San Francisco, CA

NPI Status: Active since February 15, 2013

Contact Information

3150 18TH ST
SUITE 273
SAN FRANCISCO, CA
ZIP 94110
Phone: (415) 823-2246

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NPPES record last updated: February 15, 2013. Verified against the NPPES registry weekly; last sync: July 12, 2026.

  • Organization
  • Speech-Language Pathologist

About TACKLE TALK SPEECH THERAPY

This page provides the complete NPI Profile along with additional information for Tackle Talk Speech Therapy, a provider established in San Francisco, California operating as a Speech-language Pathologist. The healthcare provider is registered in the NPI registry with number 1912247636 assigned on February 2013. The practitioner's primary taxonomy code is 235Z00000X with license number 18321 (CA). The provider is registered as an organization and their NPI record was last updated 13 years ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Joanne Lacson-seiferle Ms, Ccc-slp (Owner)

NPI
1912247636
Provider Name
TACKLE TALK SPEECH THERAPY
Entity Type
Organization
Location Address
3150 18TH ST SUITE 273 SAN FRANCISCO, CA 94110
Location Phone
(415) 823-2246
Mailing Address
1755 FILBERT ST 1F SAN FRANCISCO, CA 94123
Mailing Phone
(415) 823-2246
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
02-15-2013
Last Update Date
02-15-2013
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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

Speech-Language Pathologist

Taxonomy Code
235Z00000X
Type
Speech, Language and Hearing Service Providers
License No.
18321
License State
CA
Taxonomy Description
The speech-language pathologist is the professional who engages in clinical services, prevention, advocacy, education, administration, and research in the areas of communication and swallowing across the life span from infancy through geriatrics. Speech-language pathologists address typical and atypical impairments and disorders related to communication and swallowing in the areas of speech sound production, resonance, voice, fluency, language (comprehension and expression), cognition, and feeding and swallowing.

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

JOANNE LACSON-SEIFERLE MS, CCC-SLP

Authorized Official Title
OWNER
Authorized Official Phone
(415) 823-2246

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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 1912247636, we treat the final digit (6) 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 6).

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
9
Unchanged
Pos 3
1
Doubled → 2
Pos 4
2
Unchanged
Pos 5
2
Doubled → 4
Pos 6
4
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
6
Unchanged
Pos 9
3
Doubled → 6
Check
6
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 2 → 4 7 → 14 → 5 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 2 + 2 + 4 + 4 + 1 + 4 + 6 + 6 + 24 = 64

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

The next multiple of ten after 64 is 70. The difference is the calculated check digit.

70 - 64 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1912247636.

Other Providers at the Same Location


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

Speech-Language Pathologist
3150 18TH ST, SUITE 264
SAN FRANCISCO, CA 94110
Specialist
3150 18TH ST, SUITE 465, MAILBOX 311
SAN FRANCISCO, CA 94110
Acupuncturist
3150 18TH ST, SUITE 438, MAILBOX 308
SAN FRANCISCO, CA 94110
Marriage & Family Therapist
3150 18TH ST
SAN FRANCISCO, CA 94110
Speech-Language Pathologist
3150 18TH ST
SAN FRANCISCO, CA 94110
Acupuncturist
3150 18TH ST
SAN FRANCISCO, CA 94110
Marriage & Family Therapist
3150 18TH ST, STE 517
SAN FRANCISCO, CA 94110
Acupuncturist
3150 18TH ST, SUITE 556
SAN FRANCISCO, CA 94110
Acupuncturist
3150 18TH ST, SUITE 454
SAN FRANCISCO, CA 94110
Marriage & Family Therapist
3150 18TH ST, STE. 107
SAN FRANCISCO, CA 94110
Marriage & Family Therapist
3150 18TH ST, 257
SAN FRANCISCO, CA 94110
Marriage & Family Therapist
3150 18TH ST
SAN FRANCISCO, CA 94110
Acupuncturist
3150 18TH ST, 503
SAN FRANCISCO, CA 94110
Acupuncturist
3150 18TH ST
SAN FRANCISCO, CA 94110
Marriage & Family Therapist
3150 18TH ST
SAN FRANCISCO, CA 94110
Counselor (Mental Health)
3150 18TH ST
SAN FRANCISCO, CA 94110
Clinic/Center (Hearing and Speech)
3150 18TH ST, SUITE 264 BOX 302
SAN FRANCISCO, CA 94110
Psychoanalyst
3150 18TH ST
SAN FRANCISCO, CA 94110
Marriage & Family Therapist
3150 18TH ST
SAN FRANCISCO, CA 94110
Social Worker (Clinical)
3150 18TH ST
SAN FRANCISCO, CA 94110

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1912247636, enumerated as an "organization" on February 15, 2013.

The provider is located at 3150 18TH ST SUITE 273 SAN FRANCISCO, CA 94110 and the phone number is (415) 823-2246.

Speech-Language Pathologist with taxonomy code 235Z00000X.