Are you Frederick S. Isaak, M.D.? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileBased in Dubuque, IA, Frederick S. Isaak, M.D. is listed in the NPI registry under emergency medicine. Frederick graduated from University of North Dakota School of Medicine in 1986. Frederick is also listed as specializing in occupational medicine. Medicare claims data shows Frederick provided 40 services to 40 patients. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more. NPI 1639129281 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
1000 LANGWORTHY ST
Dubuque, IA 52001
Within Emergency Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Abdomen & Digestion
Allergy & Immune
Allergy & Immunology
Bites & Stings
Blood & Circulation
Brain & Nerves
Breathing
Digestion & Stomach
Ear, Nose & Throat
Endocrine & Metabolic
Environmental
Eye Care
Eye Emergency
General Emergency
Heart & Chest
Heart & Circulation
Heart & Lungs
Infections & Illness
Injuries & Trauma
Lungs & Breathing
Men's Health
Poisoning & Environmental
Poisoning & Toxins
Skin & Infections
Spine & Back
Urinary & Bladder
Urinary & Kidney
Women's Health
Abdominal Procedures
Airway & Breathing
Anesthesia & Sedation
Breathing & Airway
Critical Care
Diagnostics
Digestive Care
Ear, Nose & Throat
Eye & ENT
Eye Care
Heart & Diagnostics
Heart Care
Imaging & Diagnostics
Injections & Vaccines
Kidney Care
Lung & Respiratory
Medications
Mental Health
Minor Procedures
Minor Trauma
Orthopedic Procedures
Orthopedics
Poisoning & Toxicology
Specialized Care
Stroke & Vascular
Supportive Care
Toxicology
Women's Health
Wound Care
40 services · 40 patients · 1 distinct code
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
40 | As often as other peers in Emergency Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Frederick S. Isaak is an emergency physician in Dubuque, IA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Emergency Medicine”.
NPI registry
Frederick S. Isaak is listed at 1000 Langworthy St, Dubuque, IA 52001. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (563) 584-3455. Contact the office directly to confirm availability and scheduling.
NPI registry
Frederick S. Isaak's National Provider Identifier is 1639129281. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Frederick S. Isaak attended University of North Dakota School of Medicine, graduating in 1986. This comes from the CMS National Downloadable File.
CMS public data
Frederick S. Isaak has 40 years experience. Calculated from a graduation year of 1986, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Frederick S. Isaak the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Frederick S. Isaak. If this is you, claiming it is free.
Guide.md
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