Psychologist | Counseling Psychology

Mark S Sadler, PH.D.

4520 S Harvard Ave Ste 200c, Tulsa, Oklahoma, 74135-2925

About Mark S Sadler

Mark S Sadler is a psychologist based in Tulsa, Oklahoma who is specialized in Counseling Psychology. Active license number of Mark S Sadler is 411 for Counseling Psychology in Oklahoma. His current practice location is 4520 S Harvard Ave Ste 200c, Tulsa. Patients can reach him at 918-743-3224 or can fax him at 918-743-9623. Mark S Sadler is PH.D. in Counseling Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1164535167.

Mark S Sadler help people with physical, emotional and mental health issues, improve their sense of well‐being, alleviate feelings of distress and resolve crises. He also provides assessment, diagnosis, and treatment of more severe psychological symptoms.
Counseling psychologists mainly focuses on: Healthy aspects and strengths of clients (whether being seen as individuals, couples, families, groups or organizations; Environmental/situational influences (how cultural, gender and lifestyle issues shape people’s experiences and concerns); Issues of diversity and social justice (e.g., advocacy); The role of career and work in peoples’ lives.

Practice Information

Mark S Sadler 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 Mark S Sadler
Specialization Counseling Psychology
Credentials PH.D.
Gender Male
Practice Address: 4520 S Harvard Ave Ste 200c,
Tulsa, OK - 74135-2925
Fax 918-743-9623

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.

NPI Number1164535167
NPI Enumeration Date: 16 Aug, 2006
NPI Last Update On: 11 Sep, 2019

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 Mark S Sadler are as mentioned below.

License NumberSpecializationStateStatus
411Counseling Psychology OklahomaPrimary

Mailing Address

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

Mark S Sadler
4520 S Harvard Ave Ste 200c,
Tulsa, OK - 74135-2925
Phone: 918-743-3224
Fax: 918-743-9623

Book an Appointment with Mark S Sadler

To schedule an appointment, contact Mark S Sadler at 4520 S Harvard Ave Ste 200c, Tulsa, Oklahoma or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Mark S Sadler:

Mark S Sadler is a psychologist specializing in Counseling Psychology. He help people with physical, emotional and mental health issues, improve their sense of well‐being, alleviate feelings of distress and resolve crises. He also provides assessment, diagnosis, and treatment of more severe psychological symptoms.
Counseling psychologists mainly focuses on: Healthy aspects and strengths of clients (whether being seen as individuals, couples, families, groups or organizations; Environmental/situational influences (how cultural, gender and lifestyle issues shape people’s experiences and concerns); Issues of diversity and social justice (e.g., advocacy); The role of career and work in peoples’ lives.

Yes, Mark S Sadler is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.

Mark S Sadler practices at 4520 S Harvard Ave Ste 200c, Tulsa, Oklahoma, 74135-2925.

To schedule an appointment with Mark S Sadler, please contact the office at 918-743-3224.

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