DR. ROBERT L STOFAC M.D.
NPI 1740667609
Clinic/Center - Ophthalmologic Surgery in Denver, CO

NPI Status: Active since April 29, 2015

Contact Information

2130 STOUT ST
DENVER, CO
ZIP 80205
Phone: (303) 293-2220
Fax: (303) 293-3977

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Clinic/Center
Ophthalmologic Surgery

About ROBERT STOFAC

This page provides the complete NPI Profile along with additional information for Robert Stofac, a provider established in Denver, Colorado with a medical specialization in Clinic/center, focusing in ophthalmologic surgery . The healthcare provider is registered in the NPI registry with number 1740667609 assigned on April 2015. The practitioner's primary taxonomy code is 261QS0132X with license number DRP.0000629 (CO). The provider is registered as an individual and his NPI record was last updated 11 years ago.

NPI: 1740667609
Provider Name: DR. ROBERT L STOFAC M.D.
Other Name: DR. ROBERT LEE STOFAC M.D.
Other Name Type: Other Name (5)
Gender: Male
Entity Type: Individual
Location Address: 2130 STOUT ST DENVER, CO 80205
Location Phone: (303) 293-2220
Location Fax: (303) 293-3977
Mailing Address: 10180 W ASBURY AVE LAKEWOOD, CO 80227
Mailing Phone: (303) 229-2422
Mailing Fax: (303) 293-3977
Is Sole Proprietor?: Yes
Enumeration Date: 04-29-2015
Last Update Date: 04-29-2015
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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: Clinic/Center Ophthalmologic Surgery
Taxonomy Code: 261QS0132X
Type: Ambulatory Health Care Facilities
License No.: DRP.0000629
License State: CO

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 1740667609, we treat the final digit (9) 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).

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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 8

Pos 4

Unchanged

Pos 5

Doubled → 12 → 1 + 2

Pos 6

Unchanged

Pos 7

Doubled → 14 → 1 + 4

Pos 8

Unchanged

Pos 9

Doubled → 0

Check

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 4 → 8 6 → 12 → 3 7 → 14 → 5 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 8 + 0 + 1 + 2 + 6 + 1 + 4 + 6 + 0 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9

This NPI is valid

The calculated check digit is 9, which matches the last digit of 1740667609.