Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. JAMES MICHAEL HASIK DDS
NPI 1003872508
Dentist - General Practice in Saint Louis, MO

Active since April 24, 2006
915 N GRAND BLVD, DENTAL CLINIC, SAINT LOUIS, MO 63106(314) 652-4100 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

  • Individual
  • Male
  • Dentist
  • General Practice

About JAMES HASIK

This page provides the complete NPI Profile along with additional information for James Hasik, a provider established in Saint Louis, Missouri with a medical specialization in Dentist, focusing in general practice . The healthcare provider is registered in the NPI registry with number 1003872508 assigned on April 2006. The practitioner's primary taxonomy code is 1223G0001X with license number 010557 (MO). The provider is registered as an individual and his NPI record was last updated July 2026.

NPI
1003872508
Provider Name
DR. JAMES MICHAEL HASIK DDS
Gender
Male
Entity Type
Individual
Location Address
915 N GRAND BLVD DENTAL CLINIC SAINT LOUIS, MO 63106
Location Phone
(314) 652-4100
Mailing Address
13019 WINDING TRAIL LN DES PERES, MO 63131
Mailing Phone
(314) 821-1008
Is Sole Proprietor?
No
Enumeration Date
04-24-2006
Last Update Date
07-13-2026
Code Navigator

A dentist like James Hasik is a skilled in and licensed provider that diagnoses and treats problems with patients teeth, gums, and related parts of the mouth. Dentists educate patients on how to take care of the teeth and gums and provide information on diet choices that affect oral health. Dentists must be licensed in the state in which they work.

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

Dentist General Practice

Taxonomy Code
1223G0001X
Type
Dental Providers
License No.
010557
License State
MO
Taxonomy Description
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.

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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 1003872508, 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 52. The final step is to find the difference between that total and the next multiple of ten (60 - 52 = 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
0
Unchanged
Pos 3
0
Doubled → 0
Pos 4
3
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
7
Unchanged
Pos 7
2
Doubled → 4
Pos 8
5
Unchanged
Pos 9
0
Doubled → 0
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 0 → 0 8 → 16 → 7 2 → 4 0 → 0

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 + 7 + 4 + 5 + 0 + 24 = 52

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

The next multiple of ten after 52 is 60. The difference is the calculated check digit.

60 - 52 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1003872508.

Other Providers at the Same Location


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

Medicare Defined Swing Bed Unit
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Dentist (Dental Public Health)
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Physician Assistant
915 N GRAND BLVD, 11FJC
SAINT LOUIS, MO 63106
Pharmacist
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Nurse Practitioner (Adult Health)
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Occupational Therapist
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Internal Medicine
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Internal Medicine
915 N GRAND BLVD, JOHN COCHRAN VAMC 11F-JC
SAINT LOUIS, MO 63106
Pathology (Anatomic Pathology)
915 N GRAND BLVD, PATHOLOGY AND LABORATORY SERVICE, VAMC
SAINT LOUIS, MO 63106
Optometrist
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Nuclear Medicine
915 N GRAND BLVD, VA MEDICAL CENTER
SAINT LOUIS, MO 63106
Internal Medicine (Medical Oncology)
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Psychologist (Clinical)
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Nurse Practitioner (Family)
915 N GRAND BLVD, 122-JC
SAINT LOUIS, MO 63106
Nurse Practitioner (Family)
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Radiology (Diagnostic Radiology)
915 N GRAND BLVD, RADIOLOGY
SAINT LOUIS, MO 63106
Internal Medicine (Geriatric Medicine)
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Social Worker (Clinical)
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Social Worker (Clinical)
915 N GRAND BLVD
SAINT LOUIS, MO 63106
Internal Medicine (Cardiovascular Disease)
915 N GRAND BLVD, CARDIOLOGY DIVISION, BLDG 1 ROOM C219
SAINT LOUIS, MO 63106

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1003872508, enumerated as an "individual" on April 24, 2006.

The provider is located at 915 N GRAND BLVD DENTAL CLINIC SAINT LOUIS, MO 63106 and the phone number is (314) 652-4100.

Dentist with taxonomy code 1223G0001X and a focus in General Practice.