DR. REX COLEMAN GROMER MD
NPI 1992384648
Otolaryngology in Menasha, WI

NPI Status: Active since April 07, 2021

Contact Information

2 LAKE RD
MENASHA, WI
ZIP 54952
Phone: (920) 246-3543

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  • Individual
  • Male
  • Otolaryngology

About REX GROMER

This page provides the complete NPI Profile along with additional information for Rex Gromer, a provider established in Menasha, Wisconsin with a medical specialization in Otolaryngology. The healthcare provider is registered in the NPI registry with number 1992384648 assigned on April 2021. The practitioner's primary taxonomy code is 207Y00000X with license number 18738-20 (WI). The provider is registered as an individual and his NPI record was last updated 5 years ago.

NPI
1992384648
Provider Name
DR. REX COLEMAN GROMER MD
Gender
Male
Entity Type
Individual
Location Address
2 LAKE RD MENASHA, WI 54952
Location Phone
(920) 246-3543
Mailing Address
2 LAKE RD MENASHA, WI 54952
Mailing Phone
(920) 246-3543
Is Sole Proprietor?
Yes
Enumeration Date
04-07-2021
Last Update Date
04-07-2021
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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

Otolaryngology

Taxonomy Code
207Y00000X
Type
Allopathic & Osteopathic Physicians
License No.
18738-20
License State
WI
Taxonomy Description
An otolaryngologist-head and neck surgeon provides comprehensive medical and surgical care for patients with diseases and disorders that affect the ears, nose, throat, the respiratory and upper alimentary systems and related structures of the head and neck. An otolaryngologist diagnoses and provides medical and/or surgical therapy or prevention of diseases, allergies, neoplasms, deformities, disorders and/or injuries of the ears, nose, sinuses, throat, respiratory and upper alimentary systems, face, jaws and the other head and neck systems. Head and neck oncology, facial plastic and reconstructive surgery and the treatment of disorders of hearing and voice are fundamental areas of expertise.

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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 1992384648, we treat the final digit (8) 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 82. The final step is to find the difference between that total and the next multiple of ten (90 - 82 = 8).

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

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 1 + 8 + 2 + 6 + 8 + 8 + 6 + 8 + 24 = 82

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

The next multiple of ten after 82 is 90. The difference is the calculated check digit.

90 - 82 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1992384648.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1992384648, enumerated as an "individual" on April 07, 2021.

The provider is located at 2 LAKE RD MENASHA, WI 54952 and the phone number is (920) 246-3543.

Otolaryngology with taxonomy code 207Y00000X.