Glen Tonnessen, MD
NPI 1154387389 · Cardiovascular Disease Physician · Flemington, NJ
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Glen Tonnessen, MD is a Cardiovascular Disease Physician provider in Flemington, NJ (NPI 1154387389).
Provider details
- NPI number
- 1154387389
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA05512900 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
1,787 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 596 | $18 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 576 | $140 |
| Injection of Chemical Agent Into Single Incompetent Vein of Leg Using Ultrasound Guidance36465 | 174 | $1,450 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 120 | $100 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 95 | $16 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 39 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 255 | 74 |
| Atorvastatin Calcium | 189 | 52 |
| Metoprolol Succinate | 177 | 48 |
| Ezetimibe | 176 | 47 |
| Amlodipine Besylate | 128 | 37 |
| Losartan Potassium | 126 | 36 |
| Apixabanbrand: Eliquis |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,495 across 77 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
- 2006-04-25
- Last updated
- 2025-03-27
- Certified
- 2025-03-27
Frequently asked questions
- What is Glen Tonnessen's NPI number?
- Glen Tonnessen's National Provider Identifier (NPI) is 1154387389, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Glen Tonnessen's specialty?
- Glen Tonnessen is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Glen Tonnessen located?
- Glen Tonnessen's practice location on file with NPPES is 1100 Wescott Drive, Flemington, NJ 08822.
- What is Glen Tonnessen's phone number?
- The practice phone number listed in the NPPES registry for Glen Tonnessen is (908) 788-1710.
- Does Glen Tonnessen accept Medicare?
- Glen Tonnessen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Glen Tonnessen's NPI active?
- Yes — Glen Tonnessen's NPI (1154387389) is active in the NPPES registry as of the last update on 2025-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.