IVAR LESLIE FRITHSEN MD
NPI 1891803755
Family Medicine in Keene, NH

Active since August 29, 2006PECOS EnrolledAccepts Medicare Assignment
73.11/100
CMS Quality Rating

NPPES record last updated: April 18, 2012. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Ivar Leslie Frithsen Md NPPES

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

IVAR LESLIE FRITHSEN MD (NPI 1891803755) is an individual family medicine provider in Keene, New Hampshire, licensed in South Carolina (25940) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Mary Hitchcock Memorial Hospital, and is a graduate of Other (2002).

NPPES Registry Identity

NPI1891803755
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameIVAR LESLIE FRITHSENCredential: MD
Location Address580 COURT STKeene, NH 03431-1718
Mailing Address580 Court StKeene, NH 03431-1718 · (603) 354-5454
Sole ProprietorNo
Medical School CMSOtherGraduated 2002
Enumeration DateAugust 29, 2006
Last NPPES UpdateApril 18, 2012
NPI 1891803755 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License Licensed in SC · 25940
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
580 COURT ST, Keene, NH 03431

Other Identifiers 5

Medicaid259400SC
Medicaid32001211NH
Medicare PIN002586501NH
Medicare UPINI34877
Medicare ID-Type UnspecifiedAA0975SC

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Ivar Leslie Frithsen 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 ID6901834779
PECOS Enrollment IDI20120405000070, I20240930002320
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.

Areas of Expertise CMS Part B claims 3

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
74 services29 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
27 services26 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
16 services11 patients

Hospital Affiliations CMS Care Compare 4

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

Mary Hitchcock Memorial Hospital

Acute Care Hospitals · Lebanon, NH
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number300003
Location1 Medical Center DriveLebanon, NH 03756 · Grafton County
Emergency services Birthing friendly

Littleton Regional Healthcare

Critical Access Hospitals · Littleton, NH
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number301302
Location600 St Johnsbury RoadLittleton, NH 03561 · Grafton County
Emergency services

Brattleboro Memorial Hospital

Acute Care Hospitals · Brattleboro, VT
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number470011
Location17 Belmont AveBrattleboro, VT 05301 · Windham County
Emergency services Birthing friendly

Northeastern Vermont Regional Hospital

Critical Access Hospitals · Saint Johnsbury, VT
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number471303
Location1315 Hospital DriveSaint Johnsbury, VT 05819 · Caledonia County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 03431 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
$89.14 typical visit price
range $57.75 – $174.26
Typical copayment $22.28 (range $14.43 – $43.56)
Most-billed visit code 99203
Established Patient
$101.54 typical visit price
range $18.70 – $142.15
Typical copayment $25.38 (range $4.67 – $35.53)
Most-billed visit code 99214
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.

73.11/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality60.04
Promoting Interoperability91
Improvement Activities40
Cost47.04

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.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
2 suppliers14 claims14 services$21.31 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
3 suppliers22 claims22 services$114.10 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 20

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

Advanced Practice Midwife
580 COURT ST
KEENE, NH 03431
Anesthesiology
580 COURT ST, DEPT OF ANESTHESIOLOGY
KEENE, NH 03431
Nurse Practitioner (Family)
580 COURT ST
KEENE, NH 03431
Internal Medicine
580 COURT ST
KEENE, NH 03431
Internal Medicine (Cardiovascular Disease)
580 COURT ST
KEENE, NH 03431
Radiology (Diagnostic Radiology)
580 COURT ST
KEENE, NH 03431
Physician Assistant
580 COURT ST
KEENE, NH 03431
Emergency Medicine
580 COURT ST, EMERGENCY DEPARTMENT
KEENE, NH 03431

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 Ivar Frithsen's NPI number?

The NPI number for Ivar Frithsen is 1891803755. It was assigned to this individual provider in the NPPES registry on August 29, 2006.

Where is Ivar Frithsen located?

Ivar Frithsen practices at 580 Court St, Keene, NH 03431. The listed phone number is (603) 354-5454.

What is Ivar Frithsen's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Ivar Frithsen enrolled in Medicare?

Yes. Ivar Frithsen 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.

What insurance does Ivar Frithsen accept?

Health plans from Anthem Blue Cross and Blue Shield list Ivar Frithsen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Ivar Frithsen affiliated with any hospitals?

According to CMS data, Ivar Frithsen is affiliated with Mary Hitchcock Memorial Hospital, Littleton Regional Healthcare, Brattleboro Memorial Hospital and Northeastern Vermont Regional Hospital.

When was this NPI record last updated?

The NPPES record for Ivar Frithsen was last updated on April 18, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years 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.