MR. RANDALL WARREN SUMMERVILLE (PSYD) – Clinical Psychologist, NPI 1821180803

MR. RANDALL WARREN SUMMERVILLE (PSYD) is a healthcare provider. based in Lombard, Illinois. specializing in CLINICAL PSYCHOLOGIST. They hold the professional credentials PSYD. They hold a License No. 071-006658 (IL). The NPI Number for MR. RANDALL WARREN SUMMERVILLE (PSYD) is 1821180803

Main info

Male
Sole Proprietor
24 Years Of Experience
Accepts Medicare Assignment
Name
MR. RANDALL WARREN SUMMERVILLE (PSYD)
NPI
1821180803
Phone
(630) 424-8900
Address
477 E BUTTERFIELD RD STE 102
Enumeration Date
28 September 2006
Last Update Date
5 December 2022

Doctor Profile

Medical School Name
OTHER
Secondary Phone
6304248900
Graduation Year
2002 (24 years ago)
PAC ID
0244275881
Group Practice PAC ID
5799881488
Professional Enrollment ID
I20050623000418
Address ID
IL601484880LO477XXRDXX403
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience72
Completeness75
Years active:19State licenses:1Digital endpointsOther names

1,600 CLINICAL PSYCHOLOGIST in IL

Provider Addresses for MR. RANDALL WARREN SUMMERVILLE (PSYD)

  • 477 E BUTTERFIELD RD STE 102

    LOMBARD, IL 601484880

    Phone: (630) 424-8900

    Fax: (630) 424-9017

    Type: Location

  • 246, East Janata Boulevard, Highland Hills, Lombard, DuPage County, Illinois, 60148, United States

    SUITE 140

    LOMBARD, IL 601485317

    Phone: (630) 424-8900

    Fax: (630) 424-9017

    Type: Mailing

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2005-06-23

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20050623000418IClinical PsychologistILTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
96139Administration of psychological or neuropsychological test by technician, each additional 30 minutes893169$0
96133Evaluation of neuropsychological test, each additional hour821374$0
96137Administration of psychological or neuropsychological test, each additional 30 minutes446176$0
96132Evaluation of neuropsychological test, first hour386383$0
96136Administration of psychological or neuropsychological test, first 30 minutes213210$0
View full utilization report →

Insurance plans in this area (ZIP 60148)

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Provider's Procedures

MR. RANDALL WARREN SUMMERVILLE (PSYD) performs procedures in CLINICAL PSYCHOLOGIST. See the list of HCPCS codes below.
SpecialtyPractice State
HCPCS Code
Description
Service Count
Beneficiary Count
PSYCHOLOGIST, CLINICALIL96118Neuropsychological testing, interpretation, and report by psychologist or physician per hour6315

Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 5799881488View full group profile
NameSpecialtyState
Clinical PsychologistIL
Clinical Social WorkerVA

Reviews

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Frequently asked questions

How do payers reference MR. RANDALL WARREN SUMMERVILLE (PSYD)?
For MR. RANDALL WARREN SUMMERVILLE (PSYD), use NPI 1821180803 as the unique 10-digit identifier.
Is there an active status for MR. RANDALL WARREN SUMMERVILLE (PSYD)?
For scheduling context, MR. RANDALL WARREN SUMMERVILLE (PSYD) is shown as active in the registry.
What clinical focus is listed for MR. RANDALL WARREN SUMMERVILLE (PSYD)?
At a glance, MR. RANDALL WARREN SUMMERVILLE (PSYD) is tied to Clinical Psychologist. Clinical services aligned with this taxonomy classification.
Where in Illinois is MR. RANDALL WARREN SUMMERVILLE (PSYD) registered?
Use Lombard, Illinois as the headline location for MR. RANDALL WARREN SUMMERVILLE (PSYD) here.
Does MR. RANDALL WARREN SUMMERVILLE (PSYD) accept insurance?
Insurance participation is not part of the core NPI extract — call the plan or office to confirm.

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