Mark Iltis, MD
NPI 1659369353 · Family Medicine Physician · Durant, IA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Iltis, MD is a Family Medicine Physician provider in Durant, IA (NPI 1659369353).
Provider details
- NPI number
- 1659369353
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 27823 (IA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
818 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 237 | $118 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 207 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 180 | $84 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 88 | $119 |
| Hemoglobin A1c Level83036 | 31 | $10 |
| Admn Sarscov2 Vacc 1 Dose90480 | 15 | $40 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 79 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 306 | 114 |
| Amlodipine Besylate | 199 | 75 |
| Metformin Hcl | 189 | 76 |
| Omeprazole | 168 | 56 |
| Lisinopril | 167 | 63 |
| Simvastatin | 162 | 54 |
| Levothyroxine Sodium | 161 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$14 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-07
- Last updated
- 2021-05-27
- Certified
- 2021-05-27
Frequently asked questions
- What is Mark Iltis's NPI number?
- Mark Iltis's National Provider Identifier (NPI) is 1659369353, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Iltis's specialty?
- Mark Iltis is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Iltis located?
- Mark Iltis's practice location on file with NPPES is 619 5th Street, Durant, IA 52747.
- What is Mark Iltis's phone number?
- The practice phone number listed in the NPPES registry for Mark Iltis is (563) 785-4487.
- Does Mark Iltis accept Medicare?
- Mark Iltis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Iltis's NPI active?
- Yes — Mark Iltis's NPI (1659369353) is active in the NPPES registry as of the last update on 2021-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.