Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MARLON TODD GIESER PH.D.
NPI 1922005172
Psychologist in Upper Montclair, NJ

Active since July 01, 2005PECOS Enrolled
543 VALLEY RD, UPPER MONTCLAIR, NJ 07043(973) 746-0084(973) 233-1217 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Marlon Todd Gieser Ph.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARLON TODD GIESER PH.D. (NPI 1922005172) is an individual psychologist in Upper Montclair, New Jersey, licensed in New Jersey (1912) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS and is a graduate of Other (1980).

NPPES Registry Identity

NPI1922005172
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameDR. MARLON TODD GIESERCredential: PH.D.
Location Address543 VALLEY RDUpper Montclair, NJ 07043-1881
Mailing Address543 Valley RdUpper Montclair, NJ 07043-1881 · (973) 746-0084 · Fax (973) 233-1217
Fax(973) 233-1217
Sole ProprietorNo
Medical School CMSOtherGraduated 1980
Enumeration DateJuly 1, 2005
Last NPPES UpdateJuly 13, 2026
NPI 1922005172 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License Licensed in NJ · 1912
Definition
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.
543 VALLEY RD, Upper Montclair, NJ 07043

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dr. Marlon Todd Gieser Ph.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7810177029
PECOS Enrollment IDI20110210000418
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Psychotherapy, 45 minutes 90834
Psychotherapy is a treatment method where you converse with a therapist about your thoughts, feelings, and behaviors. In a 45-minute session, the therapist assists you in understanding and managing your mental health concerns, improving emotional wellness, and promoting personal growth.
807 services28 patients

Other Providers at the Same Location NPPES 10

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Counselor
543 VALLEY RD, SUITE 7
UPPER MONTCLAIR, NJ 07043
Psychologist (Clinical)
543 VALLEY RD, SUITE 9
UPPER MONTCLAIR, NJ 07043
Social Worker (Clinical)
543 VALLEY RD, 2ND FLOOR
UPPER MONTCLAIR, NJ 07043
Psychologist
543 VALLEY RD, SUITE 6
UPPER MONTCLAIR, NJ 07043
Social Worker (Clinical)
543 VALLEY RD, SUITE 9
MONTCLAIR, NJ 07043
Psychologist
543 VALLEY RD
UPPER MONTCLAIR, NJ 07043
Psychiatry & Neurology (Psychiatry)
543 VALLEY RD, SUITE 7
UPPER MONTCLAIR, NJ 07043
Counselor (Mental Health)
543 VALLEY RD
UPPER MONTCLAIR, NJ 07043

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Marlon Gieser's NPI number?

The NPI number for Marlon Gieser is 1922005172. It was assigned to this individual provider in the NPPES registry on July 1, 2005.

Where is Marlon Gieser located?

Marlon Gieser practices at 543 Valley Rd, Upper Montclair, NJ 07043. The listed phone number is (973) 746-0084.

What is Marlon Gieser's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

Is Marlon Gieser enrolled in Medicare?

Yes. Marlon Gieser is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Marlon Gieser was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 28 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.