DR. WILLIAM J KORNRICH MD
NPI 1144332198
Internal Medicine in Riverhead, NY

Active since August 31, 2006PECOS EnrolledAccepts Medicare Assignment
84.47/100
CMS Quality Rating
887 OLD COUNTRY RD, SUITE A, RIVERHEAD, NY 11901(631) 727-6122(631) 727-2672 Get Directions Write a Review

NPPES record last updated: March 10, 2021. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. William J Kornrich Md NPPES

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

DR. WILLIAM J KORNRICH MD (NPI 1144332198) is an individual internal medicine provider in Riverhead, New York, licensed in New York (182977) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Long Island Community Hospital, and is a graduate of State University Of New York At Stony Brook, School Of Medicine (1988).

NPPES Registry Identity

NPI1144332198
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. WILLIAM J KORNRICHCredential: MD
Location Address887 OLD COUNTRY RD, SUITE ARiverhead, NY 11901-2115
Mailing Address887 Old Country Rd, Suite ARiverhead, NY 11901-2115 · (631) 727-6122 · Fax (631) 727-2672
Fax(631) 727-2672
Sole ProprietorNo
Medical School CMSState University Of New York At Stony Brook, School Of MedicineGraduated 1988
Enumeration DateAugust 31, 2006
Last NPPES UpdateMarch 10, 2021
NPPES CertifiedMarch 10, 2021
NPI 1144332198 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License Licensed in NY · 182977
Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

887 OLD COUNTRY RD, Riverhead, NY 11901

Other Identifiers 1

Medicaid01265916NY

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

Dr. William J Kornrich 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 ID3779770771
PECOS Enrollment IDI20110831000280
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 12

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.
1,011 services530 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
541 services439 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
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.
461 services303 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
192 services192 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
94 services94 patients
Influenza vaccine split virus, preservative free 90662
The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.
87 services87 patients

Hospital Affiliations CMS Care Compare 3

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

Long Island Community Hospital

Acute Care Hospitals · Patchogue, NY
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330141
Location101 Hospital RoadPatchogue, NY 11772 · Suffolk County
Emergency services

John T Mather Memorial Hospital Of Port Jefferson

Acute Care Hospitals · Port Jefferson, NY
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330185
Location75 North Country RoadPort Jefferson, NY 11777 · Suffolk County
Emergency services

Suny/Stony Brook University Hospital

Acute Care Hospitals · Stony Brook, NY
4/5 CMS rating
OwnershipGovernment - State
CMS Certification Number330393
LocationHealth Sciences Center SunyStony Brook, NY 11794 · Suffolk County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11901 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
$154.28 typical visit price
range $67.40 – $203.53
Typical copayment $38.57 (range $16.85 – $50.88)
Most-billed visit code 99204
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
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.

84.47/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality93.33
Promoting Interoperability100
Improvement Activities40
Cost54.91

Referred Medical Equipment & Supplies CMS DME claims 3

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

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
10 suppliers20 claims56 services$5.81 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
4 suppliers12 claims20 services$0.98 avg. paid by Medicare
Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260
DME-Hospital Beds · category DB000N
1 supplier11 claims11 services$37.10 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.

Dentist (General Practice)
887 OLD COUNTRY RD, SUITE B
RIVERHEAD, NY 11901
Optometrist
887 OLD COUNTRY RD, SUITE K-L
RIVERHEAD, NY 11901
Internal Medicine (Infectious Disease)
887 OLD COUNTRY RD, SUITE A
RIVERHEAD, NY 11901
Clinic/Center (Hearing and Speech)
887 OLD COUNTRY RD
RIVERHEAD, NY 11901
Dentist (General Practice)
887 OLD COUNTRY RD
RIVERHEAD, NY 11901
Optometrist
887 OLD COUNTRY RD, SUITE G-K-L
RIVERHEAD, NY 11901
Dentist (General Practice)
887 OLD COUNTRY RD, SUITE B
RIVERHEAD, NY 11901
Internal Medicine (Infectious Disease)
887 OLD COUNTRY RD, SUITE A
RIVERHEAD, NY 11901

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 William Kornrich's NPI number?

The NPI number for William Kornrich is 1144332198. It was assigned to this individual provider in the NPPES registry on August 31, 2006.

Where is William Kornrich located?

William Kornrich practices at 887 Old Country Rd Suite A, Riverhead, NY 11901. The listed phone number is (631) 727-6122.

What is William Kornrich's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is William Kornrich enrolled in Medicare?

Yes. William Kornrich 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.

Is William Kornrich affiliated with any hospitals?

According to CMS data, William Kornrich is affiliated with Long Island Community Hospital, John T Mather Memorial Hospital Of Port Jefferson and Suny/Stony Brook University Hospital.

When was this NPI record last updated?

The NPPES record for William Kornrich was last updated on March 10, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.