THOMAS J. DANYLIW MD
NPI 1003881426
Preventive Medicine - Occupational Medicine in Middletown, CT

NPI Status: Active since February 20, 2006

Contact Information

28 CRESCENT ST
MIDDLETOWN, CT
ZIP 06457
Phone: (860) 344-6394
Fax: (860) 344-6748

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  • Individual
  • Male
  • Preventive Medicine
  • Occupational Medicine

About THOMAS DANYLIW

This page provides the complete NPI Profile along with additional information for Thomas Danyliw, a provider established in Middletown, Connecticut with a medical specialization in Preventive Medicine, focusing in occupational medicine . The healthcare provider is registered in the NPI registry with number 1003881426 assigned on February 2006. The practitioner's primary taxonomy code is 2083X0100X with license number E09021 (CT). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1003881426
Provider Name
THOMAS J. DANYLIW MD
Gender
Male
Entity Type
Individual
Location Address
28 CRESCENT ST MIDDLETOWN, CT 06457
Location Phone
(860) 344-6394
Location Fax
(860) 344-6748
Mailing Address
28 CRESCENT ST MIDDLETOWN, CT 06457
Mailing Phone
(860) 344-6394
Mailing Fax
(860) 344-6748
Is Sole Proprietor?
No
Enumeration Date
02-20-2006
Last Update Date
09-11-2025
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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

Preventive Medicine Occupational Medicine

Taxonomy Code
2083X0100X
Type
Allopathic & Osteopathic Physicians
License No.
E09021
License State
CT
Taxonomy Description
Occupational medicine focuses on the health of workers, including the ability to perform work; the physical, chemical, biological, and social environments of the workplace; and the health outcomes of environmental exposures. Practitioners in this field address the promotion of health in the work place, and the prevention and management of occupational and environmental injury, illness, and disability.

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)
1207P00000XAllopathic & Osteopathic Physicians

Emergency Medicine

021446 (DE)

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NPI 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 1003881426, we treat the final digit (6) 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 54. The final step is to find the difference between that total and the next multiple of ten (60 - 54 = 6).

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
0
Unchanged
Pos 3
0
Doubled → 0
Pos 4
3
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
8
Unchanged
Pos 7
1
Doubled → 2
Pos 8
4
Unchanged
Pos 9
2
Doubled → 4
Check
6
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 0 → 0 8 → 16 → 7 1 → 2 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 0 + 3 + 1 + 6 + 8 + 2 + 4 + 4 + 24 = 54

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

The next multiple of ten after 54 is 60. The difference is the calculated check digit.

60 - 54 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1003881426.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Physician Assistant (Medical)
28 CRESCENT ST
MIDDLETOWN, CT 06457
Physician Assistant (Medical)
28 CRESCENT ST
MIDDLETOWN, CT 06457
Psychiatry & Neurology (Psychiatry)
28 CRESCENT ST
MIDDLETOWN, CT 06457
Physician Assistant (Medical)
28 CRESCENT ST, AMELIA BALDWIN, ENROLLMENT COORDINATOR
MIDDLETOWN, CT 06457
Internal Medicine
28 CRESCENT ST
MIDDLETOWN, CT 06457
Internal Medicine
28 CRESCENT ST
MIDDLETOWN, CT 06457
Emergency Medicine
28 CRESCENT ST
MIDDLETOWN, CT 06457
Emergency Medicine
28 CRESCENT ST
MIDDLETOWN, CT 06457
Emergency Medicine
28 CRESCENT ST
MIDDLETOWN, CT 06457
Emergency Medicine
28 CRESCENT ST
MIDDLETOWN, CT 06457
Emergency Medicine
28 CRESCENT ST
MIDDLETOWN, CT 06457
Emergency Medicine
28 CRESCENT ST
MIDDLETOWN, CT 06457
Psychiatry & Neurology (Child & Adolescent Psychiatry)
28 CRESCENT ST, FAMILY ADVOCACY
MIDDLETOWN, CT 06457
Emergency Medicine
28 CRESCENT ST
MIDDLETOWN, CT 06457
Emergency Medicine
28 CRESCENT ST
MIDDLETOWN, CT 06457
Physician Assistant (Medical)
28 CRESCENT ST
MIDDLETOWN, CT 06457
Physician Assistant (Medical)
28 CRESCENT ST
MIDDLETOWN, CT 06457
Emergency Medicine
28 CRESCENT ST
MIDDLETOWN, CT 06457
Physician Assistant (Medical)
28 CRESCENT ST
MIDDLETOWN, CT 06457
Emergency Medicine
28 CRESCENT ST
MIDDLETOWN, CT 06457

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1003881426, enumerated as an "individual" on February 20, 2006.

The provider is located at 28 CRESCENT ST MIDDLETOWN, CT 06457 and the phone number is (860) 344-6394.

Preventive Medicine with taxonomy code 2083X0100X and a focus in Occupational Medicine.