DR. HEIDI RENAE LANCASTER PSYD
NPI 1639015688
Psychologist - Clinical in Glendale, AZ

NPI Status: Active since April 23, 2026

Contact Information

4425 W OLIVE AVE STE 151
GLENDALE, AZ
ZIP 85302
Phone: (602) 456-4817

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  • Individual
  • Female
  • Psychologist
  • Clinical

About HEIDI LANCASTER

This page provides the complete NPI Profile along with additional information for Heidi Lancaster, a provider established in Glendale, Arizona with a medical specialization in Psychologist, focusing in clinical . The healthcare provider is registered in the NPI registry with number 1639015688 assigned on April 2026. The practitioner's primary taxonomy code is 103TC0700X with license number PSY-006086 (AZ). The provider is registered as an individual and her NPI record was last updated April 2026.

NPI
1639015688
Provider Name
DR. HEIDI RENAE LANCASTER PSYD
Gender
Female
Entity Type
Individual
Location Address
4425 W OLIVE AVE STE 151 GLENDALE, AZ 85302
Location Phone
(602) 456-4817
Mailing Address
5940 W UNION HILLS DR STE D215 GLENDALE, AZ 85308
Mailing Phone
(602) 670-7625
Is Sole Proprietor?
Yes
Enumeration Date
04-23-2026
Last Update Date
04-29-2026
Code Navigator

A clinical psychologist like Heidi Lancaster assesses, diagnoses, and treats mental, emotional, and behavioral disorders. Clinical psychologists help people deal with problems ranging from short-term personal issues to severe, chronic conditions. Clinical psychologists interview patients, give diagnostic tests, provide psychotherapy and design behavior modification programs to help patients.

Location Map

Secondary Locations

  • 4545 Navajo St
    Denver, CO 80211
    (720) 961-3764
  • 7055 W Bell Rd Ste B05
    Glendale, AZ 85308
    (720) 961-3764

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

Taxonomy Code
103TC0700X
Type
Behavioral Health & Social Service Providers
License No.
PSY-006086
License State
AZ
Taxonomy Description
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

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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 1639015688, we treat the final digit (8) 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 8).

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
3
Doubled → 6
Pos 4
9
Unchanged
Pos 5
0
Doubled → 0
Pos 6
1
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
6
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
Check
8
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 0 → 0 5 → 10 → 1 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 6 + 9 + 0 + 1 + 1 + 0 + 6 + 1 + 6 + 24 = 62

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

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1639015688.

Other Providers at the Same Location


The following 4 providers are registered at the same or a nearby location.

Psychologist
4425 W OLIVE AVE STE 151
GLENDALE, AZ 85302
Marriage & Family Therapist
4425 W OLIVE AVE STE 151
GLENDALE, AZ 85302
Psychologist (Clinical)
4425 W OLIVE AVE STE 151
GLENDALE, AZ 85302
Psychologist (Forensic)
4425 W OLIVE AVE STE 151
GLENDALE, AZ 85302

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1639015688, enumerated as an "individual" on April 23, 2026.

The provider is located at 4425 W OLIVE AVE STE 151 GLENDALE, AZ 85302 and the phone number is (602) 456-4817.

Psychologist with taxonomy code 103TC0700X and a focus in Clinical.