MRS. CATHERINE EMILIE TILLMAN FLEDDERJOHN AAM BOARD CERTIFIED
NPI 1588539944
Specialist/Technologist, Other - Art, Medical in Concord, MA

NPI Status: Active since October 07, 2025

Contact Information

114R COMMONWEALTH AVE
CONCORD, MA
ZIP 01742
Phone: (631) 827-7312
Fax: (631) 827-7312

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NPPES record last updated: October 7, 2025. Verified against the NPPES registry weekly; last sync: July 12, 2026.

  • Individual
  • Female
  • Specialist/Technologist, Other
  • Art, Medical

About CATHERINE TILLMAN FLEDDERJOHN

This page provides the complete NPI Profile along with additional information for Catherine Tillman Fledderjohn, a provider established in Concord, Massachusetts with a medical specialization in Specialist/technologist, Other, focusing in art, medical . The healthcare provider is registered in the NPI registry with number 1588539944 assigned on October 2025. The practitioner's primary taxonomy code is 246ZA2600X with license number 2025-BAP06 (MA). The provider is registered as an individual and her NPI record was last updated one year ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization.

NPI
1588539944
Provider Name
MRS. CATHERINE EMILIE TILLMAN FLEDDERJOHN AAM BOARD CERTIFIED
Gender
Female
Entity Type
Individual
Location Address
114R COMMONWEALTH AVE CONCORD, MA 01742
Location Phone
(631) 827-7312
Location Fax
(631) 827-7312
Mailing Address
114R COMMONWEALTH AVE CONCORD, MA 01742
Mailing Phone
(631) 827-7312
Is Sole Proprietor?
Yes
Enumeration Date
10-07-2025
Last Update Date
10-07-2025
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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

Specialist/Technologist, Other Art, Medical

Taxonomy Code
246ZA2600X
Type
Technologists, Technicians & Other Technical Service Providers
License No.
2025-BAP06
License State
MA

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

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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 1588539944, 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 76. The final step is to find the difference between that total and the next multiple of ten (80 - 76 = 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
1
Doubled → 2
Pos 2
5
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
8
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
3
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
9
Unchanged
Pos 9
4
Doubled → 8
Check
4
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 8 → 16 → 7 5 → 10 → 1 9 → 18 → 9 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 1 + 6 + 8 + 1 + 0 + 3 + 1 + 8 + 9 + 8 + 24 = 76

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

The next multiple of ten after 76 is 80. The difference is the calculated check digit.

80 - 76 = 4
This NPI is valid
The calculated check digit is 4, which matches the last digit of 1588539944.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Clinic/Center (Mental Health (Including Community Mental Health Center))
114R COMMONWEALTH AVE
CONCORD, MA 01742

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1588539944, enumerated as an "individual" on October 07, 2025.

The provider is located at 114R COMMONWEALTH AVE CONCORD, MA 01742 and the phone number is (631) 827-7312.

Specialist/Technologist, Other with taxonomy code 246ZA2600X and a focus in Art, Medical.