ELI RYBAK MD
NPI 1306926969
Obstetrics & Gynecology - Reproductive Endocrinology in Basking Ridge, NJ

NPI Status: Active since October 17, 2006

Contact Information

140 ALLEN RD
BASKING RIDGE, NJ
ZIP 07920
Phone: (908) 604-7800
Fax: (973) 290-8370

NPI Profile Information
Primary Taxonomy
Medicare Participation & PECOS Status
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Obstetrics & Gynecology
Reproductive Endocrinology
Opted-Out Medicare

About ELI RYBAK

This page provides the complete NPI Profile along with additional information for Eli Rybak, a women's health care provider established in Basking Ridge, New Jersey with a medical specialization in Obstetrics & Gynecology, focusing in reproductive endocrinology . The healthcare provider is registered in the NPI registry with number 1306926969 assigned on October 2006. The practitioner's primary taxonomy code is 207VE0102X with license number 236178 (NJ). The provider is registered as an individual and his NPI record was last updated 13 years ago.

NPI: 1306926969
Provider Name: ELI RYBAK MD
Gender: Male
Entity Type: Individual
Location Address: 140 ALLEN RD BASKING RIDGE, NJ 07920
Location Phone: (908) 604-7800
Location Fax: (973) 290-8370
Mailing Address: 140 ALLEN RD BASKING RIDGE, NJ 07920
Mailing Phone: (908) 604-7800
Mailing Fax: (973) 290-8370
Is Sole Proprietor?: No
Enumeration Date: 10-17-2006
Last Update Date: 06-13-2013
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Women's health care providers like Eli Rybak treat and diagnose diseases and conditions that affect a woman's physical and emotional health. Women's health professionals come from a variety of different specialties, including obstetrician/gynecologists, general surgeons, perinatologists, physician assistants, nurse practitioners or nurse midwives. A women's health provider might help you with family planning, breast care, pregnancy and child birth, osteoporosis, menopause, heart disease, etc.

The provider doesn't accept Medicare and has signed an affidavit to be excluded from the Medicare program. If you are a Medicare beneficiary this means a provider can charge whatever they want for services rendered but must follow certain rules to do so. Eli Rybak opted out of Medicare effective on 07-03-2024 until 07-03-2026. Opt out periods last for two years and cannot be terminated unless the provider is opting out for the very first time and the affidavit is terminated no later than 90 days after the opt out effective date. Opt-out affidavits might renew automatically renew every two years. The provider opted out of Medicare and cannot order and refer services to other healthcare providers.

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: Obstetrics & Gynecology Reproductive Endocrinology
Taxonomy Code: 207VE0102X
Type: Allopathic & Osteopathic Physicians
License No.: 236178
License State: NJ
Taxonomy Description: An obstetrician/gynecologist who is capable of managing complex problems relating to reproductive endocrinology and infertility.

Medicare Participation & PECOS Enrollment Status

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

Opted-Out of Medicare? Yes
Opt-Out Effective Date: 07-03-2024
Opt-Out End Date: 07-03-2026
Eligible to Order and Refer? No

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 1306926969, we treat the final digit (9) 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).

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 → 0

Pos 4

Unchanged

Pos 5

Doubled → 18 → 1 + 8

Pos 6

Unchanged

Pos 7

Doubled → 12 → 1 + 2

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 0 → 0 9 → 18 → 9 6 → 12 → 3 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 0 + 6 + 1 + 8 + 2 + 1 + 2 + 9 + 1 + 2 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9

This NPI is valid

The calculated check digit is 9, which matches the last digit of 1306926969.