Psychologist | Clinical Psychology | 18+ years experience

Dr. Maria Isabel Holtrop, PSYD

1672 W Avenue J Ste 207, Lancaster, California, 93534-2861

About Dr. Maria Isabel Holtrop

Dr. Maria Isabel Holtrop is a psychologist based in Lancaster, California with 18 years of experience in Clinical Psychology. She completed her graduation in 2008. She accepts the Medicare-approved amount. Patients will not be billed for any more than the Medicare deductible and coinsurance. Active license number of Dr. Maria Isabel Holtrop is PSY 22962 for Clinical Psychology in California. Her current practice location is 1672 W Avenue J Ste 207, Lancaster. Patients can reach her at 661-225-7166 or can fax her at 661-943-3871. Dr. Maria Isabel Holtrop is PSYD in Clinical Psychology and her NPI number (Unique professional ID assigned by NPPES) is 1316170004.

Dr. Maria Isabel Holtrop is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). Her main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that she can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Practice Information

Dr. Maria Isabel Holtrop speciality, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name Dr. Maria Isabel Holtrop
Specialization Clinical Psychology
Credentials PSYD
Accepts Medicare Assignment Yes
Experience 18+ years
Graduation Year 2008
Gender Female
Practice Address: 1672 W Avenue J Ste 207,
Lancaster, CA - 93534-2861
Fax 661-943-3871

Professional Identification Codes

NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.

PAC ID 9931473915
Enrollment ID I20170915000051
NPI Number1316170004
NPI Enumeration Date: 27 Aug, 2009
NPI Last Update On: 27 Aug, 2009

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Dr. Maria Isabel Holtrop are as mentioned below.

License NumberSpecializationStateStatus
PSY 22962Clinical Psychology CaliforniaPrimary

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

Dr. Maria Isabel Holtrop
1672 W Avenue J Ste 207,
Lancaster, CA - 93534-2861
Phone: 661-225-7166
Fax: 661-943-3871

Book an Appointment with Dr. Maria Isabel Holtrop

To schedule an appointment, contact Dr. Maria Isabel Holtrop at 1672 W Avenue J Ste 207, Lancaster, California or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Maria Isabel Holtrop:

Dr. Maria Isabel Holtrop is a psychologist specializing in Clinical Psychology. She is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). Her main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that she can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Dr. Maria Isabel Holtrop has approximately 18 years of experience in Clinical Psychology.

Yes, Dr. Maria Isabel Holtrop accepts Medicare assignment, meaning the provider participates in Medicare and accepts Medicare-approved amounts for eligible services.

Yes, Dr. Maria Isabel Holtrop is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.

Dr. Maria Isabel Holtrop practices at 1672 W Avenue J Ste 207, Lancaster, California, 93534-2861.

To schedule an appointment with Dr. Maria Isabel Holtrop, please contact the office at 661-225-7166.

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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 September, 2026.