MR. GARY JOSEPH GEISSLER P.T., A.T.C.
NPI 1316929151
Specialist/Technologist - Athletic Trainer in Wellesley, MA

NPI Status: Active since November 17, 2005

Contact Information

332 WASHINGTON ST
SUITE 10
WELLESLEY, MA
ZIP 02481
Phone: (781) 431-6161
Fax: (781) 431-1458

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  • Individual
  • Male
  • Specialist/Technologist
  • Athletic Trainer

About GARY GEISSLER

This page provides the complete NPI Profile along with additional information for Gary Geissler, a provider established in Wellesley, Massachusetts with a medical specialization in Specialist/technologist, focusing in athletic trainer . The healthcare provider is registered in the NPI registry with number 1316929151 assigned on November 2005. The practitioner's primary taxonomy code is 2255A2300X with license number 217 (MA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1316929151
Provider Name
MR. GARY JOSEPH GEISSLER P.T., A.T.C.
Gender
Male
Entity Type
Individual
Location Address
332 WASHINGTON ST SUITE 10 WELLESLEY, MA 02481
Location Phone
(781) 431-6161
Location Fax
(781) 431-1458
Mailing Address
1 LOWELL ST LEXINGTON, MA 02420
Mailing Phone
(781) 862-3627
Is Sole Proprietor?
Yes
Enumeration Date
11-17-2005
Last Update Date
09-11-2025
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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

Specialist/Technologist Athletic Trainer

Taxonomy Code
2255A2300X
Type
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
License No.
217
License State
MA
Taxonomy Description
Athletic trainers are allied health care professionals who work in consultation with or under the direction of physicians, and specialize in the prevention, assessment, treatment and rehabilitation of injuries and illnesses. Currently, the entry-level employment requirements are a bachelor's degree with a major in athletic training from an accredited university or college. A majority of athletic trainers hold advanced degrees. National board certification is generally required as a condition of state licensure and employment. Most states regulate athletic trainers, and they practice within the scope of that license or regulation. Clinical practice includes emergency care, rehabilitation, reconditioning, therapeutic exercise, wellness programs, exercise physiology, kinesiology, biomechanics, nutrition, psychology and health care administration.

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)
1225100000XRespiratory, Developmental, Rehabilitative and Restorative Service Providers

Physical Therapist

6229 (MA)
22251S0007XRespiratory, Developmental, Rehabilitative and Restorative Service Providers

Physical Therapist
Sports

6229 (MA)
32251X0800XRespiratory, Developmental, Rehabilitative and Restorative Service Providers

Physical Therapist
Orthopedic

6229 (MA)

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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 1316929151, we treat the final digit (1) 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 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 1).

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
3
Unchanged
Pos 3
1
Doubled → 2
Pos 4
6
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
2
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
1
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
Check
1
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 1 → 2 9 → 18 → 9 9 → 18 → 9 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 2 + 6 + 1 + 8 + 2 + 1 + 8 + 1 + 1 + 0 + 24 = 59

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

The next multiple of ten after 59 is 60. The difference is the calculated check digit.

60 - 59 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1316929151.

Other Providers at the Same Location


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

Dentist (Oral and Maxillofacial Surgery)
332 WASHINGTON ST
WELLESLEY, MA 02481
Physical Therapist (Orthopedic)
332 WASHINGTON ST, SUITE 10
WELLESLEY HILLS, MA 02481
Physical Therapist
332 WASHINGTON ST, SUITE 10
WELLESLEY HILLS, MA 02481
Oral & Maxillofacial Surgery
332 WASHINGTON ST, GURALNICK, ROSENBERG & STEMP
WELLESLEY, MA 02481
Physical Therapist
332 WASHINGTON ST, SUITE 315
WELLESLEY HILLS, MA 02481
Pediatrics (Adolescent Medicine)
332 WASHINGTON ST, SUITE 275
WELLESLEY, MA 02481
Specialist
332 WASHINGTON ST, SUITE 340
WELLESLEY, MA 02481
Dermatology (MOHS-Micrographic Surgery)
332 WASHINGTON ST
WELLESLEY, MA 02481
Chiropractor
332 WASHINGTON ST, SUITE 360
WELLESLEY HILLS, MA 02481
Pediatrics
332 WASHINGTON ST, SUITE 260
WELLESLEY, MA 02481
Internal Medicine (Endocrinology, Diabetes & Metabolism)
332 WASHINGTON ST, STE. 245
WELLESLEY, MA 02481
Psychologist (Clinical)
332 WASHINGTON ST, FRASER MEDICAL BUILDING, SUITE 375
WELLESLEY HILLS, MA 02481
Surgery (Plastic and Reconstructive Surgery)
332 WASHINGTON ST, SUITE 205
WELLESLEY, MA 02481
Social Worker (Clinical)
332 WASHINGTON ST, SUITE 380
WELLESLEY, MA 02481
Specialist
332 WASHINGTON ST, MEZZANINE LEVEL
WELLESLEY, MA 02481
Chiropractor
332 WASHINGTON ST, SUITE 240
WELLESLEY HILLS, MA 02481
Pediatrics (Adolescent Medicine)
332 WASHINGTON ST, SUITE 275
WELLESLEY HILLS, MA 02481
Nurse Practitioner (Adult Health)
332 WASHINGTON ST, SUITE 380
WELLESLEY, MA 02481
Dentist (General Practice)
332 WASHINGTON ST, SUITE 365
WELLESLEY HILLS, MA 02481
Pediatrics
332 WASHINGTON ST, SUITE 260
WELLESLEY, MA 02481

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1316929151, enumerated as an "individual" on November 17, 2005.

The provider is located at 332 WASHINGTON ST SUITE 10 WELLESLEY, MA 02481 and the phone number is (781) 431-6161.

Specialist/Technologist with taxonomy code 2255A2300X and a focus in Athletic Trainer.