HANNAH GERSHFIELD
NPI 1033747464
Massage Therapist in Portsmouth, NH

NPI Status: Active since March 31, 2020

Contact Information

14 MANCHESTER SQ STE 120
PORTSMOUTH, NH
ZIP 03801
Phone: (603) 547-0789

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

Individual
Female
Massage Therapist

About HANNAH GERSHFIELD

This page provides the complete NPI Profile along with additional information for Hannah Gershfield, a provider established in Portsmouth, New Hampshire with a medical specialization in Massage Therapist. The healthcare provider is registered in the NPI registry with number 1033747464 assigned on March 2020. The practitioner's primary taxonomy code is 225700000X with license number 7837 (NH). The provider is registered as an individual and her NPI record was last updated 3 years ago.

NPI: 1033747464
Provider Name: HANNAH GERSHFIELD
Gender: Female
Entity Type: Individual
Location Address: 14 MANCHESTER SQ STE 120 PORTSMOUTH, NH 03801
Location Phone: (603) 547-0789
Mailing Address: 235 CENTRAL AVE APT 5 DOVER, NH 03820
Mailing Phone: (603) 547-0789
Is Sole Proprietor?: Yes
Enumeration Date: 03-31-2020
Last Update Date: 12-08-2023
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Location Map

Secondary Locations

13 March Farm Way Unit C
Greenland, NH 03840
(603) 380-7174

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: Massage Therapist
Taxonomy Code: 225700000X
Type: Respiratory, Developmental, Rehabilitative and Restorative Service Providers
License No.: 7837
License State: NH
Taxonomy Description: An individual trained in the manipulation of tissues (as by rubbing, stroking, kneading, or tapping) with the hand or an instrument for remedial or hygienic purposes.

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 1033747464, we treat the final digit (4) 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 56. The final step is to find the difference between that total and the next multiple of ten (60 - 56 = 4).

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 → 6

Pos 4

Unchanged

Pos 5

Doubled → 14 → 1 + 4

Pos 6

Unchanged

Pos 7

Doubled → 14 → 1 + 4

Pos 8

Unchanged

Pos 9

Doubled → 12 → 1 + 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 3 → 6 7 → 14 → 5 7 → 14 → 5 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 + 4 + 1 + 4 + 4 + 1 + 2 + 24 = 56

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

The next multiple of ten after 56 is 60. The difference is the calculated check digit.

60 - 56 = 4

This NPI is valid

The calculated check digit is 4, which matches the last digit of 1033747464.