DR. GREGORY B MCCALLUM (MD) – Family Medicine Physician, NPI 1689642282

DR. GREGORY B MCCALLUM (MD) is a healthcare provider. based in Redwood falls, Minnesota. specializing in FAMILY PRACTICE. They hold the professional credentials MD. They hold a License No. 34641 (MN). The NPI Number for DR. GREGORY B MCCALLUM (MD) is 1689642282

Main info

Male
36 Years Of Experience
Accepts Medicare Assignment
Name
DR. GREGORY B MCCALLUM (MD)
NPI
1689642282
Phone
(507) 637-2985
Address
1100 EAST BROADWAY
Enumeration Date
9 March 2006
Last Update Date
28 August 2024

Doctor Profile

Medical School Name
UNIVERSITY OF MINNESOTA MEDICAL SCHOOL
Secondary Phone
3202315000
Graduation Year
1990 (36 years ago)
PAC ID
8527103514
Group Practice PAC ID
8426457946
Professional Enrollment ID
I20100302000375
Address ID
MN562013556WI101XXSWXX400

Contacts

Secure Messaging
gmccallum436973@direct.centracare.com
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience64
Completeness85
Years active:20State licenses:1Other namesUpdated within 12 months

3,075 FAMILY PRACTICE in MN

Loading map...

Provider Addresses for DR. GREGORY B MCCALLUM (MD)

  • 1100, East Broadway Street, Redwood Falls, Redwood County, Minnesota, 56283, United States

    REDWOOD FALLS, MN 56283

    Phone: (507) 637-2985

    Fax: (507) 637-6678

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

Loading prescription activity...

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: 2010-03-02

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
I20100302000375IFamily PracticeMNTBD

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
99238Hospital discharge day management, 30 minutes or less1211$0
View full utilization report →

Insurance plans in this area (ZIP 56283)

Loading plans...

Provider's Procedures

DR. GREGORY B MCCALLUM (MD) performs procedures in FAMILY PRACTICE. See the list of HCPCS codes below.
SpecialtyPractice State
HCPCS Code
Description
Service Count
Beneficiary Count
FAMILY MEDICINEMN83036Hemoglobin A1C level3424
FAMILY MEDICINEMN85610Blood test, clotting time21359

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: 8426457946View full group profile
NameSpecialtyState
Certified Registered Nurse Anesthetist (Crna)MN
Certified Registered Nurse Anesthetist (Crna)MN
Certified Registered Nurse Anesthetist (Crna)MN
Physical Therapist In Private PracticeMN
Family PracticeMN
N E U R O L O G YMN
Nurse PractitionerMN
Internal MedicineMN
General SurgeryMN
O B S T E T R I C S/ G Y N E C O L O G YMN

Reviews

All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.

No reviews yet. Be the first to share your experience — your opinion helps families compare providers.

Frequently asked questions

Is DR. GREGORY B MCCALLUM (MD) listed with a National Provider Identifier?
Yes — DR. GREGORY B MCCALLUM (MD) has NPI 1689642282 on file in the registry.
Would DR. GREGORY B MCCALLUM (MD) appear as active to a payer?
You can treat DR. GREGORY B MCCALLUM (MD) as active for directory purposes; confirm clinical privileges separately.
What clinical focus is listed for DR. GREGORY B MCCALLUM (MD)?
At a glance, DR. GREGORY B MCCALLUM (MD) is tied to Family Medicine Physician. Clinical services aligned with this taxonomy classification.
Is DR. GREGORY B MCCALLUM (MD) located near Redwood Falls?
DR. GREGORY B MCCALLUM (MD) currently maps to Redwood Falls, Minnesota in this extract.
When was this NPI issued?
Enumeration for DR. GREGORY B MCCALLUM (MD) is noted as March 9, 2006 where the registry provides it.

Similar Providers

DR. JOSHUA D. FRIESE (MD)

Family Medicine Physician
1100, East Broadway Street, Redwood Falls, Redwood County, Minnesota, 56283, United States
NPI: 1407822133

DR. CORY M ROSSOW (MD)

Family Medicine Physician
1100, East Broadway Street, Redwood Falls, Redwood County, Minnesota, 56283, United States
NPI: 1316913049

DR. CYNTHIA K GRONAU (MD)

Family Medicine Physician
1100, East Broadway Street, Redwood Falls, Redwood County, Minnesota, 56283, United States
NPI: 1124094842

DR. ALAN G OLSON (MD)

Family Medicine Physician
1100, East Broadway Street, Redwood Falls, Redwood County, Minnesota, 56283, United States
NPI: 1619943081

DR. DENNIS P NELSON (MD)

Family Medicine Physician
1100, East Broadway Street, Redwood Falls, Redwood County, Minnesota, 56283, United States
NPI: 1417923798

DR. STEVEN D MEDRUD (MD)

Family Medicine Physician
1100, East Broadway Street, Redwood Falls, Redwood County, Minnesota, 56283, United States
NPI: 1497721708

DAVID L DANIELSON (MD)

Family Medicine Physician
1100 EAST BROADWAY
NPI: 1679885974

GAVIN J MAURER (MD)

Family Medicine Physician
1115, East 20th Street, Sioux Falls, Minnehaha County, South Dakota, 57105, United States
NPI: 1164955621

ROBIN ELAINE MULLER (M.D.)

Family Medicine Physician
1100, East Broadway Street, Redwood Falls, Redwood County, Minnesota, 56283, United States
NPI: 1255867008