Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 30 days.

MARIA ESTEFANIA MILLAN
NPI 1629998075
Counselor - Mental Health in Los Altos, CA

Active since July 16, 2026
851 FREMONT AVE, LOS ALTOS, CA 94024(650) 941-1698(650) 434-3953 Get DirectionsWrite a Review

NPPES record added: July 16, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

  • Individual
  • Female
  • Counselor
  • Mental Health

About MARIA MILLAN

This page provides the complete NPI Profile along with additional information for Maria Millan, a provider established in Los Altos, California with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1629998075 assigned on July 2026. The practitioner's primary taxonomy code is 101YM0800X with license number 152000 (CA). The provider is registered as an individual and her NPI record was last updated July 2026.

NPI
1629998075
Provider Name
MARIA ESTEFANIA MILLAN
Gender
Female
Entity Type
Individual
Location Address
851 FREMONT AVE LOS ALTOS, CA 94024
Location Phone
(650) 941-1698
Location Fax
(650) 434-3953
Mailing Address
1566 CANNA CT MOUNTAIN VIEW, CA 94043
Mailing Phone
(650) 265-8371
Is Sole Proprietor?
No
Enumeration Date
07-16-2026
Last Update Date
07-16-2026
Code Navigator

A mental health counselor like Maria Millan provides treatment to individuals, families, couples, and groups for mental and emotional health issues and relationship problems. Mental health counselors treat clients with a variety of conditions, including anxiety, depression, grief, low self-esteem, stress, and suicidal impulses.

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

Counselor Mental Health

Taxonomy Code
101YM0800X
Type
Behavioral Health & Social Service Providers
License No.
152000
License State
CA

Reviews for MARIA ESTEFANIA MILLAN

There are currently no reviews for this provider. Be the first person to share your experience with this provider by filling out our review form. Your insights are appreciated and will help others make informed decisions.

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 1629998075, 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
6
Unchanged
Pos 3
2
Doubled → 4
Pos 4
9
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
9
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
0
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
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 2 → 4 9 → 18 → 9 8 → 16 → 7 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 4 + 9 + 1 + 8 + 9 + 1 + 6 + 0 + 1 + 4 + 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 1629998075.

Other Providers at the Same Location


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

Marriage & Family Therapist
851 FREMONT AVE, 214
LOS ALTOS, CA 94024
Psychologist (Clinical)
851 FREMONT AVE, SUITE 214
LOS ALTOS, CA 94024
Physical Therapist
851 FREMONT AVE, SUITE 114
LOS ALTOS, CA 94024
Dermatology
851 FREMONT AVE, SUITE 112
LOS ALTOS, CA 94024
Physical Medicine & Rehabilitation
851 FREMONT AVE, SUITE 109
LOS ALTOS, CA 94024
Physical Medicine & Rehabilitation
851 FREMONT AVE, SUITE 109
LOS ALTOS, CA 94024
Psychiatry & Neurology (Psychiatry)
851 FREMONT AVE, SUITE 98
LOS ALTOS, CA 94024
Psychiatry & Neurology (Psychiatry)
851 FREMONT AVE, SUITE 214
LOS ALTOS, CA 94024
Marriage & Family Therapist
851 FREMONT AVE, SUITE 210
LOS ALTOS, CA 94024
Chiropractor
851 FREMONT AVE, SUITE #111
LOS ALTOS, CA 94024
Psychologist (Clinical)
851 FREMONT AVE, SUITE 210
LOS ALTOS, CA 94024
Psychologist (Clinical)
851 FREMONT AVE, SUITE 107
LOS ALTOS, CA 94024
Psychologist
851 FREMONT AVE, SUITE 214
LOS ALTOS, CA 94024
Social Worker (Clinical)
851 FREMONT AVE, # 210
LOS ALTOS, CA 94024
Psychologist (Clinical)
851 FREMONT AVE, SUITE 106
LOS ALTOS, CA 94024
Marriage & Family Therapist
851 FREMONT AVE, SUITE 210
LOS ALTOS, CA 94024
Marriage & Family Therapist
851 FREMONT AVE, SUITE 210
LOS ALTOS, CA 94024
Psychologist
851 FREMONT AVE, SUITE 107
LOS ALTOS, CA 94024
Psychiatry & Neurology (Psychiatry)
851 FREMONT AVE, SUITE 98
LOS ALTOS, CA 94024
Dentist
851 FREMONT AVE, SUITE 101
LOS ALTOS, CA 94024

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1629998075, enumerated as an "individual" on July 16, 2026.

The provider is located at 851 FREMONT AVE LOS ALTOS, CA 94024 and the phone number is (650) 941-1698.

Counselor with taxonomy code 101YM0800X and a focus in Mental Health.