DR. DAN CONSTANTINE DELIGIANIS M.D.
NPI 1558591990
Ophthalmology in Fort Gratiot, MI

NPI Status: Active since July 20, 2009

Contact Information

4170 FAIRWAY DRIVE
FORT GRATIOT, MI
ZIP 48059
Phone: (810) 385-8752
Fax: (810) 987-4572

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  • Individual
  • Male
  • Ophthalmology

About DAN DELIGIANIS

This page provides the complete NPI Profile along with additional information for Dan Deligianis, a provider established in Fort Gratiot, Michigan with a medical specialization in Ophthalmology. The healthcare provider is registered in the NPI registry with number 1558591990 assigned on July 2009. The practitioner's primary taxonomy code is 207W00000X with license number 4301042936 (MI). The provider is registered as an individual and his NPI record was last updated 17 years ago.

NPI
1558591990
Provider Name
DR. DAN CONSTANTINE DELIGIANIS M.D.
Other Name
DAN C. DELIGIANIS M.D.
Other Name Type
Professional Name (2)
Gender
Male
Entity Type
Individual
Location Address
4170 FAIRWAY DRIVE FORT GRATIOT, MI 48059
Location Phone
(810) 385-8752
Location Fax
(810) 987-4572
Mailing Address
616 HURON AVE PORT HURON, MI 48060
Mailing Phone
(810) 985-6933
Mailing Fax
(810) 987-4572
Is Sole Proprietor?
Yes
Enumeration Date
07-20-2009
Last Update Date
07-20-2009
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Ophthalmologists like Dan Deligianis specialize in diagnosing and treating eye conditions. They may perform surgeries to correct vision issues or prevent vision loss due to diseases like glaucoma. Additionally, they can provide eyeglasses, prescribe contact lenses, and offer other vision-related services.

Location Map

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

Ophthalmology

Taxonomy Code
207W00000X
Type
Allopathic & Osteopathic Physicians
License No.
4301042936
License State
MI
Taxonomy Description
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

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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 1558591990, we treat the final digit (0) 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 70. The final step is to find the difference between that total and the next multiple of ten (70 - 70 = 0).

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
5
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
8
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
9
Unchanged
Pos 7
1
Doubled → 2
Pos 8
9
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
0
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 5 → 10 → 1 5 → 10 → 1 1 → 2 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 1 + 0 + 8 + 1 + 0 + 9 + 2 + 9 + 1 + 8 + 24 = 70

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

The next multiple of ten after 70 is 70. The difference is the calculated check digit.

70 - 70 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1558591990.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1558591990, enumerated as an "individual" on July 20, 2009.

The provider is located at 4170 FAIRWAY DRIVE FORT GRATIOT, MI 48059 and the phone number is (810) 385-8752.

Ophthalmology with taxonomy code 207W00000X.