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GERALD CHRISTOPHER MCCALLUM PH.D.
NPI 1700856614
Psychologist - Clinical in Naperville, IL

Active since January 24, 2006PECOS EnrolledAccepts Medicare Assignment
1555 N. NAPERVILLE WHEATON RD., SUITE 108, NAPERVILLE, IL 60563(630) 983-8400(630) 983-8402 Get Directions Write a Review

NPPES record last updated: December 17, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 17, 2018, Jun 22, 2017 (2 updates tracked since 2017).

About Gerald Christopher Mccallum Ph.d. NPPES

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

GERALD CHRISTOPHER MCCALLUM PH.D. (NPI 1700856614) is an individual clinical provider in Naperville, Illinois, licensed in Illinois (071-004781) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1992).

NPPES Registry Identity

NPI1700856614
Entity TypeIndividualMale
Primary Taxonomy103TC0700X
Provider Legal NameGERALD CHRISTOPHER MCCALLUMCredential: PH.D.
Location Address1555 N. NAPERVILLE WHEATON RD., SUITE 108Naperville, IL 60563-1557
Mailing AddressPo Box 4345Naperville, IL 60567-4345 · (630) 983-8400 · Fax (630) 983-8402
Phone(630) 983-8400
Fax(630) 983-8402
Sole ProprietorNo
Medical School CMSOtherGraduated 1992
Enumeration DateJanuary 24, 2006
Last NPPES UpdateDecember 17, 20182 updates tracked since enumeration
✔ NPI 1700856614 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
Licenses✔ Licensed in IL · 071-004781✔ Licensed in IL · 071004781
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.
1555 N. NAPERVILLE WHEATON RD., Naperville, IL 60563
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.Insurance ›

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

Gerald Christopher Mccallum 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 ID3375627334
PECOS Enrollment IDI20080228000646
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 Gerald Mccallum reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Richard Kneip, Ph.D., P.C.
251 mi
Community/Behavioral Health
6548 TOWN CENTER DR STE D
Clarkston, MI 48346
  • Reassigned Medicare billing, Illinois enrollment
  • Medicare enrollment name: Richard Kneip Phd PC
  • 45 clinicians in this Medicare group
NPI 1679739700 (800) 693-1916
Grow Healthcare Group PA
1,194 mi
Mental Health
66 W FLAGLER ST STE 900
Miami, FL 33130
  • Reassigned Medicare billing, Illinois enrollment
  • 581 clinicians in this Medicare group
NPI 1245845932 (786) 244-7711

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60563 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
$181.38 typical visit price
range $59.81 – $181.38
Typical copayment $45.34 (range $14.95 – $45.34)
Most-billed visit code 99205
Established Patient
$105.07 typical visit price
range $19.15 – $147.12
Typical copayment $26.26 (range $4.78 – $36.78)
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 Gerald Mccallum's NPI number?

The NPI number for Gerald Mccallum is 1700856614. It was assigned to this individual provider in the NPPES registry on January 24, 2006.

Where is Gerald Mccallum located?

Gerald Mccallum practices at 1555 N. Naperville Wheaton Rd. Suite 108, Naperville, IL 60563. The listed phone number is (630) 983-8400.

What is Gerald Mccallum's specialty?

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

Is Gerald Mccallum enrolled in Medicare?

Yes. Gerald Mccallum 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 Gerald Mccallum's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gerald Mccallum reassigns Medicare benefits to 2 organizations: Richard Kneip, Ph.D., P.C. (Clarkston, MI) and Grow Healthcare Group PA (Miami, FL). 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 Gerald Mccallum's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gerald Mccallum accept?

Health plans from Oscar Health list Gerald Mccallum 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 Gerald Mccallum was last updated on December 17, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.