OLD GREENWICH MEDICAL GROUP LLC
NPI 1730932880
Internal Medicine in Old Greenwich, CT

NPI Status: Active since April 09, 2024

Contact Information

8 W END AVE
OLD GREENWICH, CT
ZIP 06870
Phone: (203) 637-5400
Fax: (203) 637-5408

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  • Organization
  • Internal Medicine
  • CLIA Number: 07D2037604
  • CLIA Cert. Type: Physician Office
  • CLIA Exp. Date: 03-01-2028

About OLD GREENWICH MEDICAL GROUP LLC

This page provides the complete NPI Profile along with additional information for Old Greenwich Medical Group Llc, an internist established in Old Greenwich, Connecticut operating as a Internal Medicine. The healthcare provider is registered in the NPI registry with number 1730932880 assigned on April 2024. The practitioner's primary taxonomy code is 207R00000X. The provider is registered as an organization and their NPI record was last updated 2 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 Karyna Estrella (Pracice Manager)

NPI
1730932880
Provider Name
OLD GREENWICH MEDICAL GROUP LLC
Entity Type
Organization
Location Address
8 W END AVE OLD GREENWICH, CT 06870
Location Phone
(203) 637-5400
Location Fax
(203) 637-5408
Mailing Address
8 W END AVE OLD GREENWICH, CT 06870
Mailing Phone
(203) 637-5400
Mailing Fax
(203) 637-5408
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
04-09-2024
Last Update Date
05-07-2024
Code Navigator

An internist like Old Greenwich 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 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

KARYNA ESTRELLA

Authorized Official Title
PRACICE MANAGER
Authorized Official Phone
(203) 637-5400

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
07D2037604
Facility Type
Physician Office
Certificate Effective Date
March 02, 2026
Certificate Expiration Date
March 01, 2028
Laboratory Director
JAYNE PINCUS
Certificate Type
Certificate of Waiver
Certificate Type Description
This CLIA certificate is issued to Old Greenwich Medical Group Llc to perform only waived tests. CLIA defines waived tests as simple tests with a low risk for an incorrect result. Waived tests include certain tests listed in CLIA regulations, tests cleared by the FDA for home use and tests approved by the FDA for waived status and that meet CLIA waiver criteria.

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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 1730932880, we treat the final digit (0) 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 70. The final step is to find the difference between that total and the next multiple of ten (70 - 70 = 0).

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
7
Unchanged
Pos 3
3
Doubled → 6
Pos 4
0
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
3
Unchanged
Pos 7
2
Doubled → 4
Pos 8
8
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
Check
0
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 9 → 18 → 9 2 → 4 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 6 + 0 + 1 + 8 + 3 + 4 + 8 + 1 + 6 + 24 = 70

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

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

70 - 70 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1730932880.

Other Providers at the Same Location


The following 19 providers are registered at the same or a nearby location.

Internal Medicine
8 W END AVE
OLD GREENWICH, CT 06870
Pediatrics
8 W END AVE
OLD GREENWICH, CT 06870
Pediatrics
8 W END AVE
OLD GREENWICH, CT 06870
Pediatrics
8 W END AVE
OLD GREENWICH, CT 06870
Pediatrics
8 W END AVE
OLD GREENWICH, CT 06870
Pediatrics
8 W END AVE
OLD GREENWICH, CT 06870
Internal Medicine
8 W END AVE
OLD GREENWICH, CT 06870
Internal Medicine
8 W END AVE
OLD GREENWICH, CT 06870
Dentist (General Practice)
8 W END AVE, OLD GREENWICH PROFESSIONAL BLDG.
OLD GREENWICH, CT 06870
Pediatrics
8 W END AVE, GREENWICH PEDIATRIC ASSOCIATES
OLD GREENWICH, CT 06870
Internal Medicine
8 W END AVE
OLD GREENWICH, CT 06870
Nurse Practitioner (Pediatrics)
8 W END AVE
OLD GREENWICH, CT 06870
Internal Medicine
8 W END AVE
OLD GREENWICH, CT 06870
Pediatrics
8 W END AVE
OLD GREENWICH, CT 06870
Pediatrics
8 W END AVE
OLD GREENWICH, CT 06870
Pediatrics
8 W END AVE
OLD GREENWICH, CT 06870
Pediatrics
8 W END AVE
OLD GREENWICH, CT 06870
Internal Medicine
8 W END AVE
OLD GREENWICH, CT 06870
Physician Assistant
8 W END AVE
OLD GREENWICH, CT 06870

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1730932880, enumerated as an "organization" on April 09, 2024.

The provider is located at 8 W END AVE OLD GREENWICH, CT 06870 and the phone number is (203) 637-5400.

Internal Medicine with taxonomy code 207R00000X.