HOLLY GRISHKAT
NPI 1982826269
Psychologist in Drexel Hill, PA

Active since May 03, 2007PECOS EnrolledAccepts Medicare Assignment
3403 HUEY AVE, DREXEL HILL, PA 19026(610) 368-0165 Get Directions Write a Review

NPPES record last updated: February 20, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Holly Grishkat NPPES

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

HOLLY GRISHKAT (NPI 1982826269) is an individual psychologist in Drexel Hill, Pennsylvania, licensed in Pennsylvania (PS008642L) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS, maintains a secondary practice location in Bryn Mawr, and is a graduate of Other (1991).

NPPES Registry Identity

NPI1982826269
Entity TypeIndividualFemale
Primary Taxonomy103T00000X
Provider Legal NameHOLLY GRISHKAT
Location Address3403 HUEY AVEDrexel Hill, PA 19026-2310
Mailing Address3403 Huey AveDrexel Hill, PA 19026-2310 · (610) 368-0165
Sole ProprietorNo
Medical School CMSOtherGraduated 1991
Enumeration DateMay 3, 2007
Last NPPES UpdateFebruary 20, 2023
NPPES CertifiedFebruary 20, 2023
✔ NPI 1982826269 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License✔ Licensed in PA · PS008642L
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.
Also ListedCounselorTaxonomy 101Y00000X · License PS008642L (PA)
3403 HUEY AVE, Drexel Hill, PA 19026

Secondary Practice Location 1

Location 1735 Old Lancaster Ave.Bryn Mawr, PA 19010-3414 · Phone (610) 527-9360 · Fax (610) 527-9361

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Holly Grishkat 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 ID9931439866
PECOS Enrollment IDI20190919001107
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.

Medicare Billing Reassignments

2

Medicare enrollment records show Holly Grishkat reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Clinical
1489 BALTIMORE PIKE STE 250
Springfield, PA 19064
  • Reassigned Medicare billing, Pennsylvania enrollment
  • Medicare enrollment name: Optum Behavioral Care Of Connecticut PC
  • 89 clinicians in this Medicare group
Psychologist
999 W CHESTER PIKE STE 101
West Chester, PA 19382
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 31 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Holly Grishkat's NPI number?

The NPI number for Holly Grishkat is 1982826269. It was assigned to this individual provider in the NPPES registry on May 3, 2007.

Where is Holly Grishkat located?

Holly Grishkat practices at 3403 Huey Ave, Drexel Hill, PA 19026. The listed phone number is (610) 368-0165.

What is Holly Grishkat's specialty?

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

Is Holly Grishkat enrolled in Medicare?

Yes. Holly Grishkat 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.

Which organizations bill Medicare for Holly Grishkat's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Holly Grishkat reassigns Medicare benefits to 2 organizations: Optum Behavioral Care Of Connecticut, P.C. (Springfield, PA) and Hopewell Psychology LLC (West Chester, PA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Holly Grishkat's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Holly Grishkat was last updated on February 20, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.