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GLEN ERIK TONNESSEN MD
NPI 1154387389
Internal Medicine - Cardiovascular Disease in Flemington, NJ

Active since April 25, 2006PECOS EnrolledAccepts Medicare Assignment
83.37/100
CMS Quality Rating
1100 WESCOTT DRIVE, SUITE G 3, FLEMINGTON, NJ 08822(908) 788-1710(908) 788-1716 Get Directions Write a Review

NPPES record last updated: March 27, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 27, 2025, May 25, 2017, Mar 4, 2016 (3 updates tracked since 2016).

About Glen Erik Tonnessen Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GLEN ERIK TONNESSEN MD (NPI 1154387389) is an individual cardiovascular disease provider in Flemington, New Jersey, licensed in New Jersey (MA055129) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with Hunterdon Medical Center, and is a graduate of Other (1987).

NPPES Registry Identity

NPI1154387389
Entity TypeIndividualMale
Primary Taxonomy207RC0000X
Provider Legal NameGLEN ERIK TONNESSENCredential: MD
Location Address1100 WESCOTT DRIVE, SUITE G 3Flemington, NJ 08822
Mailing Address1100 Wescott Drive, Suite G 3Flemington, NJ 08822 · (908) 788-1710 · Fax (908) 788-1716
Phone(908) 788-1710
Fax(908) 788-1716
Sole ProprietorNo
Medical School CMSOtherGraduated 1987
Enumeration DateApril 25, 2006
Last NPPES UpdateMarch 27, 20253 updates tracked since enumeration
NPPES CertifiedMarch 27, 2025
✔ NPI 1154387389 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in NJ · MA055129
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
Also ListedPhlebologyTaxonomy 202K00000X · License 25MA05512900 (NJ)
1100 WESCOTT DRIVE, Flemington, NJ 08822
Open in Google Maps ↗

Other Identifiers 1

Medicaid5H53003NJ

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Glen Erik Tonnessen Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7315842887
PECOS Enrollment IDI20100812000672
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Glen Tonnessen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Hunterdon Medical Center
0.1 mi
General Acute Care Hospital
2100 WESCOTT DR
Flemington, NJ 08822
  • Reassigned Medicare billing, New Jersey enrollment
  • Also billed through NPI 1841560158 (New Jersey)
  • 13 clinicians in this Medicare group
NPI 1922095116 (908) 788-6100
Hunterdon Cardiovascular Associates
8.7 mi
Phlebology
1738 STATE ROUTE 31 STE 110
Clinton, NJ 08809
  • Reassigned Medicare billing, New Jersey enrollment
  • 30 clinicians in this Medicare group
NPI 1053334276 (908) 788-0066

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 10

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
576 services406 patients
Injection of chemical agent into single incompetent vein of leg using ultrasound guidance 36465
This procedure involves injecting a chemical agent into a non-functioning vein in your leg. Ultrasound technology is used to accurately locate the vein. The chemical helps to close off the vein, rerouting blood flow to healthier veins.
174 services87 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
120 services104 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000
An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
95 services89 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
68 services68 patients
Destruction of first incompetent vein of arm or leg using radiofrequency and imaging guidance 36475
This procedure involves using radiofrequency energy, a type of heat energy, to close off an unhealthy vein in your arm or leg. Imaging guidance helps ensure precise targeting of the vein. This helps improve blood flow by rerouting it through healthier veins.
62 services50 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Hunterdon Medical Center

Acute Care Hospitals · Flemington, NJ
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number310005
Location2100 Wescott DriveFlemington, NJ 08822 · Hunterdon County
Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 08822 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$144.86 typical visit price
range $63.84 – $190.92
Typical copayment $36.21 (range $15.96 – $47.73)
Most-billed visit code 99204
Established Patient
$79.09 typical visit price
range $20.97 – $155.92
Typical copayment $19.77 (range $5.24 – $38.98)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

83.37/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality100
Promoting Interoperability99
Improvement Activities40
Cost45.42

Reported Quality Measures

Advance Care Plan
100%351 patients5/55-star benchmark: 100%
Controlling High Blood Pressure
84%137 patients4/55-star benchmark: 91%
Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)
Lower rates are better for this measure.
20%41 patients4/55-star benchmark: 91%
Falls: Screening for Future Fall Risk
97%334 patients4/55-star benchmark: 100%
HIV Screening
25%503 patients2/55-star benchmark: 60%
Preventive Care and Screening: Screening for High Blood Pressure and Follow-Up Documented
40%847 patients3/55-star benchmark: 61%
Provide Patients Electronic Access to Their Health Information
92%287 patients4/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Pneumatic compressor, segmental home model without calibrated gradient pressure E0651
DME-Other DME · category DE000N
1 supplier16 claims16 services$883.80 avg. paid by Medicare
Segmental pneumatic appliance for use with pneumatic compressor, full leg E0667
DME-Other DME · category DE000N
1 supplier16 claims32 services$313.13 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 12

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JONATHAN DAVID RHOADS PA
Physician Assistant
1100 WESCOTT DRIVE, SUITE G-3
FLEMINGTON, NJ 08822
Hunterdon County (908) 788-1710
PRINCETON-FLEMINGTON EYE INSTITUTE,INC.
Ophthalmology
1100 WESCOTT DRIVE, SUITE 305
FLEMINGTON, NJ 08822
Hunterdon County (908) 713-1444
KATHARINE E JUDSON-YAGER
Physician Assistant
1100 WESCOTT DRIVE, SUITE G-3
FLEMINGTON, NJ 08822
Hunterdon County (908) 788-6471
CATHLEEN DONOVAN MALOY PA
Physician Assistant
1100 WESCOTT DRIVE, SUITE G-3
FLEMINGTON, NJ 08822
Hunterdon County (908) 788-6471
JENNIFER L. KUSANT PA
Physician Assistant
1100 WESCOTT DRIVE, SUITE G-3
FLEMINGTON, NJ 08822
Hunterdon County (908) 788-6471
DR. ROBERT A BENIGNO M.D.
Internal Medicine (Cardiovascular Disease)
1100 WESCOTT DRIVE, G-3
FLEMINGTON, NJ 08822
Hunterdon County (908) 788-1710
AUSTIN H. KUTSCHER JR. MD
Internal Medicine (Cardiovascular Disease)
1100 WESCOTT DRIVE, SUITE G3
FLEMINGTON, NJ 08822
Hunterdon County (908) 788-1710
JONATHAN K. HORIUCHI MD
Internal Medicine (Cardiovascular Disease)
1100 WESCOTT DRIVE, SUITE G3
FLEMINGTON, NJ 08822
Hunterdon County (908) 788-1710

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Glen Tonnessen's NPI number?

The NPI number for Glen Tonnessen is 1154387389. It was assigned to this individual provider in the NPPES registry on April 25, 2006.

Where is Glen Tonnessen located?

Glen Tonnessen practices at 1100 Wescott Drive Suite G 3, Flemington, NJ 08822. The listed phone number is (908) 788-1710.

What is Glen Tonnessen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Glen Tonnessen enrolled in Medicare?

Yes. Glen Tonnessen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Glen Tonnessen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Glen Tonnessen reassigns Medicare benefits to 2 organizations: Hunterdon Medical Center (Flemington, NJ) and Hunterdon Cardiovascular Associates (Clinton, NJ). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Glen Tonnessen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Glen Tonnessen affiliated with any hospitals?

According to CMS data, Glen Tonnessen is affiliated with Hunterdon Medical Center.

When was this NPI record last updated?

The NPPES record for Glen Tonnessen was last updated on March 27, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.