LANCE PHILIP MASSERANT
NPI 1457004723
Marriage & Family Therapist in San Francisco, CA

Active since January 27, 2022
1625 CARROLL AVE, SAN FRANCISCO, CA 94124(415) 822-7500 Get Directions Write a Review

NPPES record last updated: February 4, 2025. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Feb 4, 2025, Nov 15, 2024, Jan 27, 2022 (3 updates tracked since 2022).

  • Individual
  • Male
  • Marriage & Family Therapist

About LANCE MASSERANT

This page provides the complete NPI Profile along with additional information for Lance Masserant, a provider established in San Francisco, California with a medical specialization in Marriage & Family Therapist. The healthcare provider is registered in the NPI registry with number 1457004723 assigned on January 2022. The practitioner's primary taxonomy code is 106H00000X with license number 151412 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1457004723
Provider Name
LANCE PHILIP MASSERANT
Gender
Male
Entity Type
Individual
Location Address
1625 CARROLL AVE SAN FRANCISCO, CA 94124
Location Phone
(415) 822-7500
Mailing Address
1625 CARROLL AVE SAN FRANCISCO, CA 94124
Mailing Phone
(415) 822-7500
Is Sole Proprietor?
No
Enumeration Date
01-27-2022
Last Update Date
02-04-2025
Code Navigator

A marriage and family therapist like Lance Masserant help patients manage problems with their family and other relationships. Marriage and family therapists encourage clients to discuss their emotions and experiences and, develop strategies and skills to change behavior and cope with difficult situations. Many therapists apply cognitive behavioral therapy to help patients understand harmful thoughts, feelings, and also teach patients how to replace them with positive, life-enhancing ones.

Location Map

Secondary Locations

  • 368 Fell St
    San Francisco, CA 94102
    (415) 861-0828

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

Marriage & Family Therapist

Taxonomy Code
106H00000X
Type
Behavioral Health & Social Service Providers
License No.
151412
License State
CA
Taxonomy Description
A marriage and family therapist is a person with a master's degree in marriage and family therapy, or a master's or doctoral degree in a related mental health field with substantially equivalent coursework in marriage and family therapy, who receives supervised clinical experience, or a person who meets the state requirements to practice as a marriage and family therapist. A marriage and family therapist treats mental and emotional disorders within the context of marriage and family systems. A marriage and family therapist provides mental health and counseling services to individuals, couples, families, and groups.

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)
1101YM0800XBehavioral Health & Social Service Providers

Counselor
Mental Health

 
2171M00000XOther Service Providers

Case Manager/Care Coordinator

 
3172V00000XOther Service Providers

Community Health Worker

 

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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 1457004723, we treat the final digit (3) 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 57. The final step is to find the difference between that total and the next multiple of ten (60 - 57 = 3).

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
4
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
7
Unchanged
Pos 5
0
Doubled → 0
Pos 6
0
Unchanged
Pos 7
4
Doubled → 8
Pos 8
7
Unchanged
Pos 9
2
Doubled → 4
Check
3
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 5 → 10 → 1 0 → 0 4 → 8 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 1 + 0 + 7 + 0 + 0 + 8 + 7 + 4 + 24 = 57

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

The next multiple of ten after 57 is 60. The difference is the calculated check digit.

60 - 57 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1457004723.

Other Providers at the Same Location


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

Counselor (Addiction (Substance Use Disorder))
1625 CARROLL AVE
SAN FRANCISCO, CA 94124
Counselor (Addiction (Substance Use Disorder))
1625 CARROLL AVE
SAN FRANCISCO, CA 94124
Counselor (Addiction (Substance Use Disorder))
1625 CARROLL AVE
SAN FRANCISCO, CA 94124
Counselor (Addiction (Substance Use Disorder))
1625 CARROLL AVE
SAN FRANCISCO, CA 94124
Case Management
1625 CARROLL AVE
SAN FRANCISCO, CA 94124
Counselor (Addiction (Substance Use Disorder))
1625 CARROLL AVE
SAN FRANCISCO, CA 94124
Counselor (Addiction (Substance Use Disorder))
1625 CARROLL AVE
SAN FRANCISCO, CA 94124
Psychologist (Prescribing (Medical))
1625 CARROLL AVE
SAN FRANCISCO, CA 94124
Licensed Vocational Nurse
1625 CARROLL AVE
SAN FRANCISCO, CA 94124
Counselor (Addiction (Substance Use Disorder))
1625 CARROLL AVE
SAN FRANCISCO, CA 94124
Counselor (Addiction (Substance Use Disorder))
1625 CARROLL AVE
SAN FRANCISCO, CA 94124
Counselor (Addiction (Substance Use Disorder))
1625 CARROLL AVE
SAN FRANCISCO, CA 94124
Counselor (Addiction (Substance Use Disorder))
1625 CARROLL AVE
SAN FRANCISCO, CA 94124
Technician, Pathology (Phlebotomy)
1625 CARROLL AVE
SAN FRANCISCO, CA 94124
Community Health Worker
1625 CARROLL AVE
SAN FRANCISCO, CA 94124
Technician, Pathology (Phlebotomy)
1625 CARROLL AVE
SAN FRANCISCO, CA 94124
Technician, Pathology (Phlebotomy)
1625 CARROLL AVE
SAN FRANCISCO, CA 94124
Community Health Worker
1625 CARROLL AVE
SAN FRANCISCO, CA 94124
Community Health Worker
1625 CARROLL AVE
SAN FRANCISCO, CA 94124
Specialist
1625 CARROLL AVE
SAN FRANCISCO, CA 94124

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1457004723, enumerated as an "individual" on January 27, 2022.

The provider is located at 1625 CARROLL AVE SAN FRANCISCO, CA 94124 and the phone number is (415) 822-7500.

Marriage & Family Therapist with taxonomy code 106H00000X.