Dr. Simon Behnam Isaac , MD
Internal Medicine β’ Dubuque, IA
3068 Huntington Dr
Dubuque, IA 520011591
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on June 7, 2006; this date does not establish years in practice.
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Published CMS data list 726 Medicare Part D prescriptions, including refills, in 2014.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2014. Published rows only; this is not a quality measure.
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Published Part D records, 2014:
- Lisinopril β 91 prescription fills, including refills.
- Levothyroxine Sodium β 68 prescription fills, including refills.
- Metformin Hcl β 65 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2014. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 24 records in the table Β· Guide: How to read Medicare Part D prescriber data
Practice Location & Contact Primary Location
3068 Huntington Dr
Dubuque, IA 520011591
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
857 standardized 30-day fills in 2014
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$17,682 in 2014
The total cost of these prescriptions in 2014, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2014.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019β2025.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.
Compared with the same specialty in Dubuque and Iowa
Billing and prescribing volume is not a quality rating.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Isaac are from 2014.
30 active clinicians are listed under Internal Medicine with a practice address in Dubuque, IA (857 in Iowa).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Dubuque
16.7% of these 30 clinicians have the CMS telehealth indicator.
46.7% of these 30 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
CMS data for Part D prescriptions are available for 2014 only.
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30-day fills
CMS data for 30-day fills are available for 2014 only.
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Part D drug cost
CMS data for Part D drug cost are available for 2014 only.
Sources: CMS Medicare Part D Prescribers (2014), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2014.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Lisinopril | Lisinopril | 91 | 3,210 | $451.08 | 27 |
| Levothyroxine Sodium | Levothyroxine Sodium | 68 | 2,385 | $807.38 | 15 |
| Metformin Hcl | Metformin Hcl | 65 | 2,250 | $405.82 | 19 |
| Amlodipine Besylate | Amlodipine Besylate | 51 | 1,830 | $195.83 | 14 |
| Omeprazole | Omeprazole | 49 | 2,010 | $696.57 | 16 |
| Proair Hfa | Albuterol Sulfate | 40 | 1,086 | $2,565.32 | 11 |
| Gabapentin | Gabapentin | 37 | 1,260 | $615.43 | 11 |
| Atorvastatin Calcium | Atorvastatin Calcium | 37 | 1,470 | $423.09 | 13 |
| Hydrochlorothiazide | Hydrochlorothiazide | 37 | 1,410 | $193.04 | 15 |
| Pravastatin Sodium | Pravastatin Sodium | 34 | 1,170 | $656.62 | β |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 22 | 567 | $1,620.56 | β |
| Metoprolol Tartrate | Metoprolol Tartrate | 21 | 870 | $100.82 | β |
| Losartan Potassium | Losartan Potassium | 20 | 600 | $137.18 | β |
| Symbicort | Budesonide/Formoterol Fumarate | 19 | 562 | $4,665.58 | β |
| Simvastatin | Simvastatin | 17 | 870 | $157.03 | β |
| Metoprolol Succinate | Metoprolol Succinate | 17 | 720 | $486.42 | β |
| Alendronate Sodium | Alendronate Sodium | 14 | 508 | $128.48 | β |
| Lorazepam | Lorazepam | 14 | 292 | $81.55 | β |
| Ibuprofen | Ibuprofen | 13 | 355 | $85.43 | β |
| Lansoprazole | Lansoprazole | 13 | 390 | $640.60 | β |
| Qvar | Beclomethasone Dipropionate | 13 | 375 | $2,059.49 | β |
| Furosemide | Furosemide | 12 | 360 | $29.14 | β |
| Clotrimazole-Betamethasone | Clotrimazole/Betamethasone Dip | 11 | 128 | $169.60 | β |
| Oxycodone Hcl | Oxycodone Hcl | 11 | 256 | $309.64 | β |
Source: CMS Part D by Provider and Drug, 2014; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Career & Practice History
NPI enumerated June 07, 2006.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to November 2026.
NPI Administrative Meta
Other Internal Medicine Providers in Dubuque
- Dr. Kristin Nelson, MD
- Dr. Mark Liaboe, MD
- Dr. Elise Mcpherson, DO
- Dr. Hillard Salas, MD
- Dr. Christine Sinsky, MD
- Dr. Allen Meurer, MD
Mailing Address
3068 Huntington Dr
Dubuque, IA 520011591