ALISON MARISSA HIXON MD, PHD
NPI 1700454956
Psychiatry & Neurology - Neurology in Saint Louis, MO

NPI Status: Active since June 15, 2021

Contact Information

1 BARNES JEWISH HOSPITAL PLZ
SAINT LOUIS, MO
ZIP 63110
Phone: (314) 362-5000

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

Individual
Female
Psychiatry & Neurology
Neurology

About ALISON HIXON

This page provides the complete NPI Profile along with additional information for Alison Hixon, a provider established in Saint Louis, Missouri with a medical specialization in Psychiatry & Neurology, focusing in neurology . The healthcare provider is registered in the NPI registry with number 1700454956 assigned on June 2021. The practitioner's primary taxonomy code is 2084N0400X with license number 2021022168 (MO). The provider is registered as an individual and her NPI record was last updated May 2026.

NPI: 1700454956
Provider Name: ALISON MARISSA HIXON MD, PHD
Gender: Female
Entity Type: Individual
Location Address: 1 BARNES JEWISH HOSPITAL PLZ SAINT LOUIS, MO 63110
Location Phone: (314) 362-5000
Mailing Address: 660 S EUCLID AVE SAINT LOUIS, MO 63110
Is Sole Proprietor?: No
Enumeration Date: 06-15-2021
Last Update Date: 05-07-2026
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Location Map

Secondary Locations

125 E Idaho St
Boise, ID 83712
(208) 381-1950

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: Psychiatry & Neurology Neurology
Taxonomy Code: 2084N0400X
Type: Allopathic & Osteopathic Physicians
License No.: 2021022168
License State: MO
Taxonomy Description: A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No.	Taxonomy Code	Type	Classification / Specialization	License No. (State)
1	2084N0400X	Allopathic & Osteopathic Physicians	Psychiatry & Neurology Neurology	3481800 (ID)

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 1700454956, we treat the final digit (6) 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 6).

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 → 0

Pos 4

Unchanged

Pos 5

Doubled → 8

Pos 6

Unchanged

Pos 7

Doubled → 8

Pos 8

Unchanged

Pos 9

Doubled → 10 → 1 + 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 0 → 0 4 → 8 4 → 8 5 → 10 → 1