Gary Friesen, MD
NPI 1730123183 · Cardiovascular Disease Physician · Marquette, MI
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gary Friesen, MD is a Cardiovascular Disease Physician provider in Marquette, MI (NPI 1730123183).
Provider details
- NPI number
- 1730123183
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4301069400 (MI)
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
1,435 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) |
|---|---|---|
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 661 | $68 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg) With Review By Physician93018 | 124 | $14 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg) With Supervision By Physician93016 | 108 | $21 |
| Ultrasound of Heart, Follow-Up93308 | 103 | $24 |
| Nuclear Medicine Studies of Heart Muscle at Rest and With Stress and Spect78452 | 97 | $75 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 94 | 32 |
| Atorvastatin Calcium | 69 | 19 |
| Losartan Potassium | 63 | 21 |
| Amlodipine Besylate | 54 | 19 |
| Carvedilol | 29 | — |
| Apixabanbrand: Eliquis | 24 | — |
| Isosorbide Mononitratebrand: Isosorbide Mononitrate Er |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$163 across 3 records (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
- 2006-06-16
- Last updated
- 2008-02-05
Frequently asked questions
- What is Gary Friesen's NPI number?
- Gary Friesen's National Provider Identifier (NPI) is 1730123183, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Friesen's specialty?
- Gary Friesen is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Gary Friesen located?
- Gary Friesen's practice location on file with NPPES is 1414 West Fair Avenue, Marquette, MI 49855.
- What is Gary Friesen's phone number?
- The practice phone number listed in the NPPES registry for Gary Friesen is (906) 225-3870.
- Does Gary Friesen accept Medicare?
- Gary Friesen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gary Friesen's NPI active?
- Yes — Gary Friesen's NPI (1730123183) is active in the NPPES registry as of the last update on 2008-02-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.