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: July 19, 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
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

Other Identifiers 1

Medicaid5H53003NJ

Medicare Participation & PECOS Enrollment Status

Glen Tonnessen is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Glen Tonnessen is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 7315842887

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20100812000672

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Provider Referred Orders for Durable Medical Equipment, Devices & Supplies

The following list reflects the services, supplies or durable medical equipment ordered by this provider to a DME supplier on behalf of patients. The information below is derived from Medicare claims data and reflects the BETOS category, HCPCS code information and the number times each service was submitted under the Medicare fee-for-service program.

Durable Medical Equipment

  • DME-Other DME (DE000N)

    Pneumatic compressor, segmental home model without calibrated gradient pressure (HCPCS:E0651)

    1 DME suppliers used 16 Medicare Claims 16 Services Paid

  • DME-Other DME (DE000N)

    Segmental pneumatic appliance for use with pneumatic compressor, full leg (HCPCS:E0667)

    1 DME suppliers used 16 Medicare Claims 32 Services Paid

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Chemical destruction of first incompetent vein of arm or leg using imaging guidance

This procedure involves using a chemical to close off a malfunctioning vein in your arm or leg. Imaging guidance is used to accurately locate the vein. This helps improve blood flow by rerouting it through healthier veins.

This service was performed 16 times for 11 patients

Destruction of first incompetent vein of arm or leg using radiofrequency and imaging guidance

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.

This service was performed 62 times for 50 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

This service was performed 14 times for 13 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more

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.

This service was performed 120 times for 104 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more

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.

This service was performed 576 times for 406 patients

Injection of chemical agent into single incompetent vein of leg using ultrasound guidance

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.

This service was performed 174 times for 87 patients

Laser destruction of incompetent vein of arm or leg using imaging guidance

Laser destruction of an incompetent vein is a non-invasive procedure where a laser is used to seal off a malfunctioning vein in the arm or leg. The process is guided by imaging technology to ensure precision and effectiveness. This helps alleviate symptoms like pain and swelling.

This service was performed 23 times for 21 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more

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.

This service was performed 68 times for 68 patients

Removal of varicose veins of arm or leg, 10-20 incisions

This procedure involves removing varicose veins, which are enlarged, swollen veins, from your arm or leg. Your doctor will make 10-20 small incisions, then carefully remove the problematic veins. This can help improve blood flow and alleviate discomfort.

This service was performed 43 times for 36 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report

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.

This service was performed 95 times for 89 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $36.21 for a new patient copayment and $19.77 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 08822 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

  • Average New Patient Price $144.86
  • Minimum New Patient Price $63.84
  • Maximum New Patient Price $190.92
  • Average New Patient Copayment $36.21
  • Minimum New Patient Copayment $15.96
  • Maximum New Patient Copayment $47.73

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99213

  • Average Established Patient Price $79.09
  • Minimum Established Patient Price $20.97
  • Maximum Established Patient Price $155.92
  • Average Established Patient Copayment $19.77
  • Minimum Established Patient Copayment $5.24
  • Maximum Established Patient Copayment $38.98

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

Overall MIPS Quality Performance

The provider participated in CMS Quality Payment Program under the Merit-based Incentive Payment System (MIPS) and has an overall final score of 83.37, based on four performance areas: quality, improvement activities, promoting interoperability, and cost. The purpose of this information is to help people with Medicare make informed decisions and incentivize doctors and clinicians to maximize performance. The provider also has detailed performance information the following quality measures: .

The Merit-based Incentive Payment System (MIPS) is a way providers could use to participate in CMS Quality Payment Program (QPP). The MIPS program affects clinician reimbursement for Part B covered professional services and also rewards them for improving the quality of patient care and outcomes.

  • Final Score: 83.37 out of 100

    The MIPS program evaluates providers across multiple categories with a specific weight for each category resulting a in a MIPS final score that ranges from 0 to 100 points. The MIPS Final Score determines whether providers receive a negative, neutral or positive MIPS payment adjustment.

  • Quality Score: 100

    The Quality category assesses providers performance on clinical practices and patient outcomes under the traditional MIPS program. The quality measures help identify the quality of healthcare processes, outcomes, and patient experiences. The Quality measure category comprises 40% of a provider's final MIPS score.

    There are six collection types for MIPS quality measures: Electronic Clinical Quality Measures (eCQMs), MIPS Clinical Quality Measures (CQMs), Qualified Clinical Data Registry (QCDR) Measures, Medicare Part B claims measures, CMS Web Interface measures and The Consumer Assessment of Healthcare Providers and Systems (CAHPS) for MIPS Survey.

  • Promoting Interoperability Score: 99

    The Interoperability category measures the providers ability to use technology to exchange and make use of healthcare information in a way that is less burdensome and improves outcomes. The Interoperability measure category comprises 25% of a provider's final MIPS score.

    The MIPS Interoperability measure focuses on the use of certified electronic health record technology (CEHRT) to improve patient access health information, the exchange of information between clinicians and pharmacies and the systematic collection, analysis, and interpretation of healthcare data.

  • Improvement Activities Score: 40

    The Improvement Activities performance category evaluates the providers participation in clinical activities that support the improvement of clinical practice, care delivery, and outcomes. Providers have the option to choose 2 to 4 activities from an inventory of over 100 improvement activities. Providers typically choose the activities that best fit their needs. The improvement activities measure category comprises 15% of a provider's final MIPS score.

    The Improvement measures aim to better patient engagement, patient safety and other areas of patient care. The Improvement Activities category comprises 15% of a provider's final MIPS score.

  • Cost Score: 45.42

    The Cost performance category assesses the amount and types of services provided and how clinicians coordinate care and seek improvement of health outcomes by ensuring patients receive the appropriate services.

    Although providers don't determine the price of healthcare services they are important in delivering high-quality care at a reasonable cost. The Cost measures category comprises 20% of a provider's final MIPS score.

MIPS Quality Measures

The following performance measures were reported under the Merit-Based Incentive Payment System (MIPS) and Qualified Clinical Data Registry (QCDR) quality measures program.

Quality Measure Performance Number of Patients
Advance Care Plan 100% 351
Controlling High Blood Pressure 84% 137
Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%) 20% "Inverse Quality Measure"
This is an inverse quality measure, a lower rate means the provider is rated better.
41
Falls: Screening for Future Fall Risk 97% 334
HIV Screening 25% 503
Preventive Care and Screening: Screening for High Blood Pressure and Follow-Up Documented 40% 847
Provide Patients Electronic Access to Their Health Information 92% 287

Find Provider Hospital Affiliations - Privileges

Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.

Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. Glen Tonnessen is affiliated with the following medical facilities:

Hospital Name Address Phone Hospital Type Overall Rating
HUNTERDON MEDICAL CENTER2100 WESCOTT DRIVE
FLEMINGTON, NJ 08822
(908) 788-6100Acute Care Hospitals

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Other Providers at the Same Location


The following 12 providers are registered at the same or a nearby location.

Nurse Practitioner
1100 WESCOTT DRIVE, SUITE G-3
FLEMINGTON, NJ 08822
Physician Assistant
1100 WESCOTT DRIVE, SUITE G-3
FLEMINGTON, NJ 08822
Physician Assistant
1100 WESCOTT DRIVE, SUITE G-3
FLEMINGTON, NJ 08822
Physician Assistant
1100 WESCOTT DRIVE, SUITE G-3
FLEMINGTON, NJ 08822
Nurse Practitioner
1100 WESCOTT DRIVE, SUITE G3
FLEMINGTON, NJ 08822
Internal Medicine (Cardiovascular Disease)
1100 WESCOTT DRIVE, G-3
FLEMINGTON, NJ 08822
Ophthalmology
1100 WESCOTT DRIVE, SUITE 305
FLEMINGTON, NJ 08822
Internal Medicine (Cardiovascular Disease)
1100 WESCOTT DRIVE, SUITE G-3
FLEMINGTON, NJ 08822
Internal Medicine (Cardiovascular Disease)
1100 WESCOTT DRIVE, SUITE G3
FLEMINGTON, NJ 08822
Internal Medicine (Cardiovascular Disease)
1100 WESCOTT DRIVE, SUITE G3
FLEMINGTON, NJ 08822
Physician Assistant
1100 WESCOTT DRIVE, SUITE G-3
FLEMINGTON, NJ 08822
Nurse Practitioner (Acute Care)
1100 WESCOTT DRIVE, SUITE 63
FLEMINGTON, NJ 08822

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1154387389, enumerated as an "individual" on April 25, 2006.

The provider is located at 1100 WESCOTT DRIVE SUITE G 3 FLEMINGTON, NJ 08822 and the phone number is (908) 788-1710.

Internal Medicine with taxonomy code 207RC0000X and a focus in Cardiovascular Disease.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.

Glen Tonnessen is affiliated with: HUNTERDON MEDICAL CENTER.