HAYDEN ALLEN ANZ MD
NPI 1033795562
Orthopaedic Surgery in Saint Louis, MO

NPI Status: Active since March 23, 2021

Contact Information

660 S EUCLID AVE
SAINT LOUIS, MO
ZIP 63110
Phone: (314) 514-3500

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  • Individual
  • Male
  • Orthopaedic Surgery

About HAYDEN ANZ

This page provides the complete NPI Profile along with additional information for Hayden Anz, a provider established in Saint Louis, Missouri with a medical specialization in Orthopaedic Surgery. The healthcare provider is registered in the NPI registry with number 1033795562 assigned on March 2021. The practitioner's primary taxonomy code is 207X00000X with license number 2025053853 (MO). The provider is registered as an individual and his NPI record was last updated June 2026.

NPI
1033795562
Provider Name
HAYDEN ALLEN ANZ MD
Gender
Male
Entity Type
Individual
Location Address
660 S EUCLID AVE SAINT LOUIS, MO 63110
Location Phone
(314) 514-3500
Mailing Address
660 S EUCLID AVE SAINT LOUIS, MO 63110
Is Sole Proprietor?
No
Enumeration Date
03-23-2021
Last Update Date
06-23-2026
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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

Orthopaedic Surgery

Taxonomy Code
207X00000X
Type
Allopathic & Osteopathic Physicians
License No.
2025053853
License State
MO
Taxonomy Description
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.

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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 1033795562, we treat the final digit (2) 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 58. The final step is to find the difference between that total and the next multiple of ten (60 - 58 = 2).

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
3
Doubled → 6
Pos 4
3
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
9
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
5
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
2
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 3 → 6 7 → 14 → 5 5 → 10 → 1 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 6 + 3 + 1 + 4 + 9 + 1 + 0 + 5 + 1 + 2 + 24 = 58

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

The next multiple of ten after 58 is 60. The difference is the calculated check digit.

60 - 58 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1033795562.

Other Providers at the Same Location


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

Clinic/Center (Pain)
660 S EUCLID AVE
SAINT LOUIS, MO 63110
Internal Medicine (Endocrinology, Diabetes & Metabolism)
660 S EUCLID AVE, CAMPUS BOX 8015
SAINT LOUIS, MO 63110
Internal Medicine (Rheumatology)
660 S EUCLID AVE
SAINT LOUIS, MO 63110
Nurse Anesthetist, Certified Registered
660 S EUCLID AVE
SAINT LOUIS, MO 63110
Nurse Practitioner (Adult Health)
660 S EUCLID AVE
SAINT LOUIS, MO 63110
Internal Medicine (Endocrinology, Diabetes & Metabolism)
660 S EUCLID AVE
SAINT LOUIS, MO 63110
Pediatrics
660 S EUCLID AVE
SAINT LOUIS, MO 63110
Ophthalmology
660 S EUCLID AVE
SAINT LOUIS, MO 63110
Internal Medicine (Pulmonary Disease)
660 S EUCLID AVE
SAINT LOUIS, MO 63110
Psychiatry & Neurology (Neurology with Special Qualifications in Child Neurology)
660 S EUCLID AVE, BOX 8111
SAINT LOUIS, MO 63110
Nurse Anesthetist, Certified Registered
660 S EUCLID AVE
SAINT LOUIS, MO 63110
Obstetrics & Gynecology (Maternal & Fetal Medicine)
660 S EUCLID AVE
SAINT LOUIS, MO 63110
Anesthesiology
660 S EUCLID AVE
SAINT LOUIS, MO 63110
Internal Medicine (Infectious Disease)
660 S EUCLID AVE
SAINT LOUIS, MO 63110
Emergency Medicine
660 S EUCLID AVE
SAINT LOUIS, MO 63110
Internal Medicine (Infectious Disease)
660 S EUCLID AVE
SAINT LOUIS, MO 63110
Nurse Practitioner (Adult Health)
660 S EUCLID AVE
SAINT LOUIS, MO 63110
Internal Medicine (Infectious Disease)
660 S EUCLID AVE
SAINT LOUIS, MO 63110
Medical Genetics (Clinical Genetics (M.D.))
660 S EUCLID AVE
SAINT LOUIS, MO 63110
Internal Medicine (Infectious Disease)
660 S EUCLID AVE
SAINT LOUIS, MO 63110

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1033795562, enumerated as an "individual" on March 23, 2021.

The provider is located at 660 S EUCLID AVE SAINT LOUIS, MO 63110 and the phone number is (314) 514-3500.

Orthopaedic Surgery with taxonomy code 207X00000X.