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DR. JOHN MICHAEL CALLAHAN M.D.
NPI 1851704480
Pediatrics in Dubuque, IA

Active since June 11, 2014PECOS Enrolled
1000 LANGWORTHY ST, DUBUQUE, IA 52001(563) 584-3440(563) 584-3009 Get Directions Write a Review

NPPES record last updated: July 5, 2017. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. John Michael Callahan M.d. NPPES

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

DR. JOHN MICHAEL CALLAHAN M.D. (NPI 1851704480) is an individual pediatrics provider in Dubuque, Iowa, licensed in Iowa (MD-44274) and active in the NPI registry since June 2014. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1851704480
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameDR. JOHN MICHAEL CALLAHANCredential: M.D.
Location Address1000 LANGWORTHY STDubuque, IA 52001-7313
Mailing Address1500 Associates Dr.Dubuque, IA 52002-2201 · (563) 584-4100 · Fax (563) 584-4110
Phone(563) 584-3440
Fax(563) 584-3009
Sole ProprietorNo
Enumeration DateJune 11, 2014
Last NPPES UpdateJuly 5, 2017
✔ NPI 1851704480 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in IA · MD-44274
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
1000 LANGWORTHY ST, Dubuque, IA 52001
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Accepted Insurance

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

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. John Michael Callahan M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 52001 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
$81.84 typical visit price
range $52.96 – $161.40
Typical copayment $20.46 (range $13.24 – $40.35)
Most-billed visit code 99203
Established Patient
$94.05 typical visit price
range $16.91 – $131.98
Typical copayment $23.51 (range $4.22 – $32.99)
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.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

LARISSA R DEHNING PA-C
Physician Assistant
1000 LANGWORTHY ST
DUBUQUE, IA 52001
Dubuque County (563) 584-3226
KIM M. EHLERS A.R.N.P.
Nurse Practitioner
1000 LANGWORTHY ST
DUBUQUE, IA 52001
Dubuque County (563) 584-3430
SUSAN G. BUSHMAN A.R.N.P.
Nurse Practitioner
1000 LANGWORTHY ST
DUBUQUE, IA 52001
Dubuque County (563) 584-3480
BRIAN LEO LOC D.O.
Internal Medicine (Cardiovascular Disease)
1000 LANGWORTHY ST
DUBUQUE, IA 52001
Dubuque County (563) 584-3425
JOSEPH BERNARD FULLER M.D.
Surgery
1000 LANGWORTHY ST
DUBUQUE, IA 52001
Dubuque County (563) 584-3450
THOMAS ANTHONY SINSKY M.D.
Internal Medicine
1000 LANGWORTHY ST
DUBUQUE, IA 52001
Dubuque County (563) 584-3430
KARI PFAB ARNP
Nurse Practitioner
1000 LANGWORTHY ST
DUBUQUE, IA 52001
Dubuque County (563) 584-3425
CHARLES ALLEN PARKER M.D.
Otolaryngology
1000 LANGWORTHY ST
DUBUQUE, IA 52001
Dubuque County (563) 584-3475

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 John Callahan's NPI number?

The NPI number for John Callahan is 1851704480. It was assigned to this individual provider in the NPPES registry on June 11, 2014.

Where is John Callahan located?

John Callahan practices at 1000 Langworthy St, Dubuque, IA 52001. The listed phone number is (563) 584-3440.

What is John Callahan's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is John Callahan enrolled in Medicare?

Yes. John Callahan is registered in the Medicare PECOS enrollment system.

What insurance does John Callahan accept?

Health plans from Medica and Oscar Insurance Company list John Callahan 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 John Callahan was last updated on July 5, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.