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DR. JOHN C KOLLAR DO
NPI 1841227352
Surgery in Saddle Brook, NJ

Active since June 28, 2006PECOS EnrolledAccepts Medicare Assignment
449B MARKET ST, SADDLE BROOK, NJ 07663(201) 712-7900(201) 712-7902 Get Directions Write a Review

NPPES record last updated: January 27, 2010. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. John C Kollar Do NPPES

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

DR. JOHN C KOLLAR DO (NPI 1841227352) is an individual surgery provider in Saddle Brook, New Jersey, licensed in New Jersey (MB52216) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Bergen New Bridge Medical Center, and is a graduate of Rowan University School Of Osteopathic Medicine (1987).

NPPES Registry Identity

NPI1841227352
Entity TypeIndividualMale
Primary Taxonomy208600000X
Provider Legal NameDR. JOHN C KOLLARCredential: DO
Location Address449B MARKET STSaddle Brook, NJ 07663-5941
Mailing Address449b Market StSaddle Brook, NJ 07663-5941 · (201) 712-7900 · Fax (201) 712-7902
Phone(201) 712-7900
Fax(201) 712-7902
Sole ProprietorNo
Medical School CMSRowan University School Of Osteopathic MedicineGraduated 1987
Enumeration DateJune 28, 2006
Last NPPES UpdateJanuary 27, 2010
✔ NPI 1841227352 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License✔ Licensed in NJ · MB52216
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
449B MARKET ST, Saddle Brook, NJ 07663
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Other Identifiers 4

Medicaid5499208NJ
Medicare PIN702435RSKNJ
Medicare UPINF09620
Medicare PIN702435B61

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.Insurance ›

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

Dr. John C Kollar Do 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 ID1951593409
PECOS Enrollment IDI20101004000119
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

3

Medicare enrollment records show John Kollar reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Bergen Laparoscopic And General Surgery PA
Same address
Surgery
449 B MARKET ST
Saddle Brook, NJ 07663
  • Reassigned Medicare billing, New Jersey enrollment
NPI 1336185131 (201) 712-7900
Saddle Brook Medical Center PA
0.1 mi
Urgent Care
383 MARKET ST # B-4
Saddle Brook, NJ 07663
  • Reassigned Medicare billing, New Jersey enrollment
  • 2 clinicians in this Medicare group
NPI 1982631883 (201) 712-7900
Bergen County Improvement Authority
4.6 mi
Internal Medicine
230 E RIDGEWOOD AVE
Paramus, NJ 07652
  • Reassigned Medicare billing, New Jersey enrollment
  • 120 clinicians in this Medicare group
NPI 1891836441 (201) 967-4000

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 5

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.
36 services16 patients
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.
23 services12 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
16 services16 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
14 services14 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.
11 services11 patients

Hospital Affiliations CMS Care Compare

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

Bergen New Bridge Medical Center

Acute Care Hospitals · Paramus, NJ
OwnershipVoluntary non-profit - Private
CMS Certification Number310058
Location230 East Ridgewood AveParamus, NJ 07652 · Bergen County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 07663 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
$98.09 typical visit price
range $63.84 – $190.92
Typical copayment $24.52 (range $15.96 – $47.73)
Most-billed visit code 99203
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.

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 John Kollar's NPI number?

The NPI number for John Kollar is 1841227352. It was assigned to this individual provider in the NPPES registry on June 28, 2006.

Where is John Kollar located?

John Kollar practices at 449B Market St, Saddle Brook, NJ 07663. The listed phone number is (201) 712-7900.

What is John Kollar's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is John Kollar enrolled in Medicare?

Yes. John Kollar 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 John Kollar's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Kollar reassigns Medicare benefits to 3 organizations: Bergen Laparoscopic And General Surgery PA (Saddle Brook, NJ), Saddle Brook Medical Center PA (Saddle Brook, NJ) and Bergen County Improvement Authority (Paramus, 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 John Kollar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does John Kollar accept?

Health plans from Oscar Health list John Kollar 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 John Kollar affiliated with any hospitals?

According to CMS data, John Kollar is affiliated with Bergen New Bridge Medical Center.

When was this NPI record last updated?

The NPPES record for John Kollar was last updated on January 27, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.