FREDERICK SIMON ISAAK M.D.
NPI 1639129281
Emergency Medicine in Dubuque, IA

Q: What is Frederick Isaak's NPI number?

The NPI number for Frederick Isaak is 1639129281. It was assigned to this individual provider in the NPPES registry on May 12, 2006.

Q: What is Frederick Isaak's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Q: When was this NPI record last updated?

The NPPES record for Frederick Isaak was last updated on April 11, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.

Active since May 12, 2006PECOS EnrolledAccepts Medicare Assignment

1000 LANGWORTHY ST, DUBUQUE, IA 52001(563) 584-3455(563) 584-3177 Get Directions Write a Review

NPPES record last updated: April 11, 2008. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Frederick Simon Isaak M.d. NPPES

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

FREDERICK SIMON ISAAK M.D. (NPI 1639129281) is an individual emergency medicine provider in Dubuque, Iowa, licensed in Iowa (28293) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS and is a graduate of University Of North Dakota School Of Medicine (1986).

NPPES Registry Identity

NPI1639129281

Entity TypeIndividualMale

Primary Taxonomy207P00000X

Provider Legal NameFREDERICK SIMON ISAAKCredential: M.D.

Location Address1000 LANGWORTHY STDubuque, IA 52001-7313

Mailing Address1500 Associates DrDubuque, IA 52002-2201 · (563) 584-4100 · Fax (563) 584-4110

Phone(563) 584-3455

Fax(563) 584-3177

Sole ProprietorNo

Medical School CMSUniversity Of North Dakota School Of MedicineGraduated 1986

Enumeration DateMay 12, 2006

Last NPPES UpdateApril 11, 2008

✔ NPI 1639129281 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207P00000X

License✔ Licensed in IA · 28293

Definition

An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

Also ListedPreventive Medicine · Occupational MedicineTaxonomy 2083X0100X · License 28293 (IA)

1000 LANGWORTHY ST, Dubuque, IA 52001

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Other Identifiers 3

Medicare UPINE62952

Medicaid0189407IA

Medicare ID-Type Unspecified02726IA

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 and accepts Medicare assignment

Frederick Simon Isaak M.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 ID1850426685

PECOS Enrollment IDI20100318000844

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.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

40 services40 patients

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