Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. COREY CZARNECKI DPM
NPI 1679197644
Podiatrist - Primary Podiatric Medicine in Oswego, IL

Active since June 04, 2020PECOS Enrolled
3963 US HIGHWAY 34, OSWEGO, IL 60543(630) 551-3338(949) 862-3678 Get Directions Write a Review

NPPES record last updated: July 16, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Jul 16, 2026, Aug 1, 2024, Jul 10, 2023 and 3 more (6 updates tracked since 2020).

  • Individual
  • Male
  • Years of Experience 7
  • Podiatrist
  • Primary Podiatric Medicine
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About COREY CZARNECKI

This page provides the complete NPI Profile along with additional information for Corey Czarnecki, a provider established in Oswego, Illinois with a medical specialization in Podiatrist, focusing in primary podiatric medicine and more than 7 years of experience. The healthcare provider is registered in the NPI registry with number 1679197644 assigned on June 2020. The practitioner's primary taxonomy code is 213EP1101X with license number 135.001103 (IL). The provider is registered as an individual and his NPI record was last updated July 2026.

NPI
1679197644
Provider Name
DR. COREY CZARNECKI DPM
Gender
Male
Entity Type
Individual
Location Address
3963 US HIGHWAY 34 OSWEGO, IL 60543
Location Phone
(630) 551-3338
Location Fax
(949) 862-3678
Mailing Address
3963 US HIGHWAY 34 OSWEGO, IL 60543
Mailing Phone
(630) 551-3338
Mailing Fax
(949) 862-3678
Medical School Name
OTHER
Graduation Year
2020
Is Sole Proprietor?
No
Enumeration Date
06-04-2020
Last Update Date
07-16-2026
Code Navigator

A podiatrist like Corey Czarnecki provides medical and surgical care for people with foot, ankle, and lower leg issues. Podiatrists treat foot and ankle ailments like calluses, ingrown toenails, heel spurs, arthritis, congenital foot deformities, foot problems associated with diabetes and arch problems.

Location Map

Secondary Locations

  • 810 E Division St
    Coal City, IL 60416
    (815) 634-2324
  • 27754 Blue Grass Dr Unit D
    Channahon, IL 60410
    (815) 521-9347

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Podiatrist Primary Podiatric Medicine

Taxonomy Code
213EP1101X
Type
Podiatric Medicine & Surgery Service Providers
License No.
135.001103
License State
IL

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1213E00000XPodiatric Medicine & Surgery Service Providers

Podiatrist

016006018 (IL)

Medicare Participation & PECOS Enrollment Status

Corey Czarnecki 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.

Corey Czarnecki 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) and a Home Health Agency (HHA).

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: 3577980903

    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: I20230726001676

    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: No

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. Corey Czarnecki is affiliated with the following medical facilities:

Hospital Name Address Phone Hospital Type Overall Rating
MORRIS HOSPITAL & HEALTHCARE CENTERS150 W HIGH ST
MORRIS, IL 60450
(815) 942-2932Acute Care Hospitals

Reviews for DR. COREY CZARNECKI DPM

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NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1679197644, we treat the final digit (4) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 76. The final step is to find the difference between that total and the next multiple of ten (80 - 76 = 4).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
6
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
9
Unchanged
Pos 5
1
Doubled → 2
Pos 6
9
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
6
Unchanged
Pos 9
4
Doubled → 8
Check
4
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 7 → 14 → 5 1 → 2 7 → 14 → 5 4 → 8

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 6 + 1 + 4 + 9 + 2 + 9 + 1 + 4 + 6 + 8 + 24 = 76

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 76 is 80. The difference is the calculated check digit.

80 - 76 = 4
This NPI is valid
The calculated check digit is 4, which matches the last digit of 1679197644.

Other Providers at the Same Location


The following 2 providers are registered at the same or a nearby location.

Durable Medical Equipment & Medical Supplies
3963 US HIGHWAY 34
OSWEGO, IL 60543
Durable Medical Equipment & Medical Supplies
3963 US HIGHWAY 34
OSWEGO, IL 60543

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1679197644, enumerated as an "individual" on June 04, 2020.

The provider is located at 3963 US HIGHWAY 34 OSWEGO, IL 60543 and the phone number is (630) 551-3338.

Podiatrist with taxonomy code 213EP1101X and a focus in Primary Podiatric Medicine.

Corey Czarnecki is affiliated with: MORRIS HOSPITAL & HEALTHCARE CENTERS.