DR. ROBERT D'SHAUN GROFF DO
NPI 1154028413
Military Health Care Provider in O Fallon, IL

NPI Status: Active since February 07, 2023

Contact Information

3 SAINT ELIZABETH BLVD STE 4000
O FALLON, IL
ZIP 62269
Phone: (618) 256-9355
Fax: (618) 206-2332

NPI Profile Information
Primary Taxonomy
Medicare Participation & PECOS Status
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Military Health Care Provider
PECOS Enrolled

About ROBERT GROFF

This page provides the complete NPI Profile along with additional information for Robert Groff, a provider established in O Fallon, Illinois with a medical specialization in Military Health Care Provider. The healthcare provider is registered in the NPI registry with number 1154028413 assigned on February 2023. The practitioner's primary taxonomy code is 171000000X. The provider is registered as an individual and his NPI record was last updated 2 years ago.

NPI: 1154028413
Provider Name: DR. ROBERT D'SHAUN GROFF DO
Gender: Male
Entity Type: Individual
Location Address: 3 SAINT ELIZABETH BLVD STE 4000 O FALLON, IL 62269
Location Phone: (618) 256-9355
Location Fax: (618) 206-2332
Mailing Address: 3 SAINT ELIZABETH BLVD STE 4000 O FALLON, IL 62269
Mailing Phone: (618) 256-9355
Mailing Fax: (618) 206-2332
Is Sole Proprietor?: No
Enumeration Date: 02-07-2023
Last Update Date: 05-15-2024
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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: Military Health Care Provider
Taxonomy Code: 171000000X
Type: Other Service Providers
Taxonomy Description: Active duty military health care providers not otherwise classified who need to be separately identified for operational, clinical, or administrative processes.

Medicare Participation & PECOS Enrollment Status

Robert Groff 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), a Home Health Agency (HHA) and Power Mobility Devices.

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
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: Yes

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 1154028413, we treat the final digit (3) 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 47. The final step is to find the difference between that total and the next multiple of ten (50 - 47 = 3).

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 → 10 → 1 + 0

Pos 4

Unchanged

Pos 5

Doubled → 0

Pos 6

Unchanged

Pos 7

Doubled → 16 → 1 + 6

Pos 8

Unchanged

Pos 9

Doubled → 2

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 5 → 10 → 1 0 → 0 8 → 16 → 7 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 1 + 0 + 4 + 0 + 2 + 1 + 6 + 4 + 2 + 24 = 47

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

The next multiple of ten after 47 is 50. The difference is the calculated check digit.

50 - 47 = 3

This NPI is valid

The calculated check digit is 3, which matches the last digit of 1154028413.