Mark Hiser, M.D.
NPI 1538184924 · Cardiovascular Disease Physician · Rockford, IL
Enrolled with Medicare as Practitioner - Cardiac Electrophysiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Hiser, M.D. is a Cardiovascular Disease Physician provider in Rockford, IL (NPI 1538184924).
Provider details
- NPI number
- 1538184924
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 36055207 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
830 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Anticoagulant Management of Patient Taking Warfarin93793 | 423 | $11 |
| Blood Test, Clotting Time85610 | 180 | $4 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 68 | $123 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 62 | $87 |
| Evaluation of Single, Dual, Multiple Lead Or Leadless Pacemaker System Or Implantable Defibrillator System, Remote Up to 90 Days93296 | 26 | $19 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 34 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 189 | 57 |
| Atorvastatin Calcium | 135 | 38 |
| Warfarin Sodium | 124 | 40 |
| Apixabanbrand: Eliquis | 120 | 34 |
| Losartan Potassium | 113 | 34 |
| Rivaroxabanbrand: Xarelto | 106 | 33 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-13
- Last updated
- 2009-11-11
Frequently asked questions
- What is Mark Hiser's NPI number?
- Mark Hiser's National Provider Identifier (NPI) is 1538184924, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Hiser's specialty?
- Mark Hiser is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Hiser located?
- Mark Hiser's practice location on file with NPPES is 444 Roxbury Road, Rockford, IL 61107-5059.
- What is Mark Hiser's phone number?
- The practice phone number listed in the NPPES registry for Mark Hiser is (815) 398-3000.
- Does Mark Hiser accept Medicare?
- Mark Hiser is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Hiser's NPI active?
- Yes — Mark Hiser's NPI (1538184924) is active in the NPPES registry as of the last update on 2009-11-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.