1. Home
  2. Directory
  3. Tennessee
  4. Knoxville
  5. Psychologist
  6. NPI Profile

CATHERINE M GRELLO PH.D.
NPI 1407993892
Psychologist - Clinical in Knoxville, TN

Active since February 01, 2007PECOS EnrolledAccepts Medicare Assignment
6231 HIGHLAND PLACE WAY STE 201, KNOXVILLE, TN 37919(865) 584-8547(865) 584-5932 Get Directions Write a Review

NPPES record last updated: March 7, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Catherine M Grello Ph.d. NPPES

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

CATHERINE M GRELLO PH.D. (NPI 1407993892) is an individual clinical provider in Knoxville, Tennessee, licensed in Tennessee (2686) and active in the NPI registry since February 2007. She is enrolled in Medicare PECOS and is a graduate of Other (2005).

NPPES Registry Identity

NPI1407993892
Entity TypeIndividualFemale
Primary Taxonomy103TC0700X
Provider Legal NameCATHERINE M GRELLOCredential: PH.D.
Location Address6231 HIGHLAND PLACE WAY STE 201Knoxville, TN 37919-4083
Mailing Address6231 Highland Place Way Ste 201Knoxville, TN 37919-4083 · (865) 584-8547 · Fax (865) 584-5932
Phone(865) 584-8547
Fax(865) 584-5932
Sole ProprietorYes
Medical School CMSOtherGraduated 2005
Enumeration DateFebruary 1, 2007
Last NPPES UpdateMarch 7, 2026
NPPES CertifiedMarch 7, 2026
✔ NPI 1407993892 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
License✔ Licensed in TN · 2686
Definition
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.
6231 HIGHLAND PLACE WAY STE 201, Knoxville, TN 37919
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BlueCross BlueShield of Tennessee, Oscar Insurance Company, Providence Health Plan and more.Insurance ›

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

Catherine M Grello 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 ID4183718299
PECOS Enrollment IDI20070920000344
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37919 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$160.89 typical visit price
range $52.64 – $160.89
Typical copayment $40.22 (range $13.16 – $40.22)
Most-billed visit code 99205
Established Patient
$93.60 typical visit price
range $16.72 – $131.41
Typical copayment $23.40 (range $4.18 – $32.85)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Catherine Grello's NPI number?

The NPI number for Catherine Grello is 1407993892. It was assigned to this individual provider in the NPPES registry on February 1, 2007.

Where is Catherine Grello located?

Catherine Grello practices at 6231 Highland Place Way Ste 201, Knoxville, TN 37919. The listed phone number is (865) 584-8547.

What is Catherine Grello's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Is Catherine Grello enrolled in Medicare?

Yes. Catherine Grello 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.

What insurance does Catherine Grello accept?

Health plans from BlueCross BlueShield of Tennessee, Oscar Insurance Company, Providence Health Plan and UnitedHealthcare list Catherine Grello as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Catherine Grello was last updated on March 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months 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.