GALES FERRY MEDICAL GROUP LLC
NPI 1194859058
Internal Medicine in Gales Ferry, CT

NPI Status: Active since March 15, 2007

Contact Information

1527 ROUTE 12
GALES FERRY, CT
ZIP 06335
Phone: (860) 464-7274
Fax: (860) 464-7404

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  • Organization
  • Internal Medicine
  • CLIA Number: 07D0711410
  • CLIA Cert. Type: Physician Office
  • CLIA Exp. Date: 02-19-2028

About GALES FERRY MEDICAL GROUP LLC

This page provides the complete NPI Profile along with additional information for Gales Ferry Medical Group Llc, an internist established in Gales Ferry, Connecticut operating as a Internal Medicine. The healthcare provider is registered in the NPI registry with number 1194859058 assigned on March 2007. The practitioner's primary taxonomy code is 207R00000X. The provider is registered as an organization and their NPI record was last updated 6 years 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. The authorized official of this NPI record is Dr. John J Hennessey M.d. (Partner)

NPI
1194859058
Provider Name
GALES FERRY MEDICAL GROUP LLC
Entity Type
Organization
Location Address
1527 ROUTE 12 GALES FERRY, CT 06335
Location Phone
(860) 464-7274
Location Fax
(860) 464-7404
Mailing Address
PO BOX 335 GALES FERRY, CT 06335
Mailing Phone
(860) 464-7274
Mailing Fax
(860) 464-7404
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
03-15-2007
Last Update Date
08-22-2020
Code Navigator

An internist like Gales Ferry Medical Group Llc is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

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

Internal Medicine

Taxonomy Code
207R00000X
Type
Allopathic & Osteopathic Physicians
Taxonomy Description
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Group Taxonomy 193400000X MULTIPLE 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.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

DR. JOHN J HENNESSEY M.D.

Authorized Official Title
PARTNER
Authorized Official Phone
(860) 464-7253

CLIA Information

The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:

CLIA Number
07D0711410
Facility Type
Physician Office
Certificate Effective Date
February 20, 2026
Certificate Expiration Date
February 19, 2028
Laboratory Director
JOHN J. HENNESSEY
Certificate Type
Certificate for Provider-Performed Microscopy Procedures (PPMP)
Certificate Type Description
This CLIA certificate is issued to Gales Ferry Medical Group Llc in which a physician, midlevel practitioner or dentist that performs specific microscopy procedures during the course of a patient's visit. A limited list of provider-performed microscopy procedures is included under this certificate type, which are categorized as moderate complexity testing.

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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 1194859058, we treat the final digit (8) 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 8).

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
1
Unchanged
Pos 3
9
Doubled → 18 → 1 + 8
Pos 4
4
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
5
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
0
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
Check
8
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 9 → 18 → 9 8 → 16 → 7 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 + 1 + 1 + 8 + 4 + 1 + 6 + 5 + 1 + 8 + 0 + 1 + 0 + 24 = 62

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

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1194859058.

Other Providers at the Same Location


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

Pediatrics
1527 ROUTE 12
GALES FERRY, CT 06335
Clinic/Center (Medical Specialty)
1527 ROUTE 12
GALES FERRY, CT 06335
Dentist (General Practice)
1527 ROUTE 12
GALES FERRY, CT 06335
Dentist (General Practice)
1527 ROUTE 12
GALES FERRY, CT 06335
Dentist (Orthodontics and Dentofacial Orthopedics)
1527 ROUTE 12
GALES FERRY, CT 06335
Internal Medicine
1527 ROUTE 12, SUITE 1
GALES FERRY, CT 06335
Internal Medicine
1527 ROUTE 12
GALES FERRY, CT 06335
Pediatrics
1527 ROUTE 12
GALES FERRY, CT 06335
Pediatrics
1527 ROUTE 12, BOX 608
GALES FERRY, CT 06335
Pediatrics
1527 ROUTE 12
GALES FERRY, CT 06335
Pediatrics
1527 ROUTE 12
GALES FERRY, CT 06335
Pediatrics
1527 ROUTE 12
GALES FERRY, CT 06335
Pediatrics
1527 ROUTE 12
GALES FERRY, CT 06335
Pediatrics
1527 ROUTE 12
GALES FERRY, CT 06335
Dentist (General Practice)
1527 ROUTE 12
GALES FERRY, CT 06335
Dentist (Pediatric Dentistry)
1527 ROUTE 12
GALES FERRY, CT 06335
Nurse Practitioner (Acute Care)
1527 ROUTE 12
GALES FERRY, CT 06335
Dentist (Pediatric Dentistry)
1527 ROUTE 12
GALES FERRY, CT 06335
Nurse Practitioner (Family)
1527 ROUTE 12, SUITE 101
GALES FERRY, CT 06335
Pediatrics
1527 ROUTE 12
GALES FERRY, CT 06335

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1194859058, enumerated as an "organization" on March 15, 2007.

The provider is located at 1527 ROUTE 12 GALES FERRY, CT 06335 and the phone number is (860) 464-7274.

Internal Medicine with taxonomy code 207R00000X.