DR. RACHEL HUMPHREY M.D.
NPI 1679898779
Internal Medicine - Medical Oncology in Princeton, NJ

NPI Status: Active since March 31, 2010

Contact Information

251 BOUVANT DR
PRINCETON, NJ
ZIP 08540
Phone: (609) 396-0708

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  • Individual
  • Female
  • Internal Medicine
  • Medical Oncology

About RACHEL HUMPHREY

This page provides the complete NPI Profile along with additional information for Rachel Humphrey, an internist established in Princeton, New Jersey with a medical specialization in Internal Medicine, focusing in medical oncology . The healthcare provider is registered in the NPI registry with number 1679898779 assigned on March 2010. The practitioner's primary taxonomy code is 207RX0202X with license number 036306 (CT). The provider is registered as an individual and her NPI record was last updated 16 years ago.

NPI
1679898779
Provider Name
DR. RACHEL HUMPHREY M.D.
Gender
Female
Entity Type
Individual
Location Address
251 BOUVANT DR PRINCETON, NJ 08540
Location Phone
(609) 396-0708
Mailing Address
251 BOUVANT DR PRINCETON, NJ 08540
Mailing Phone
(609) 396-0708
Is Sole Proprietor?
Yes
Enumeration Date
03-31-2010
Last Update Date
03-31-2010
Code Navigator

An internist like Rachel Humphrey 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 Medical Oncology

Taxonomy Code
207RX0202X
Type
Allopathic & Osteopathic Physicians
License No.
036306
License State
CT
Taxonomy Description
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.

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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 1679898779, 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 81. The final step is to find the difference between that total and the next multiple of ten (90 - 81 = 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
1
Doubled → 2
Pos 2
6
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
9
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
9
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
7
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
Check
9
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 7 → 14 → 5 8 → 16 → 7 8 → 16 → 7 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 4 + 9 + 1 + 6 + 9 + 1 + 6 + 7 + 1 + 4 + 24 = 81

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

The next multiple of ten after 81 is 90. The difference is the calculated check digit.

90 - 81 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1679898779.

Other Providers at the Same Location


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

Internal Medicine (Medical Oncology)
251 BOUVANT DR
PRINCETON, NJ 08540

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1679898779, enumerated as an "individual" on March 31, 2010.

The provider is located at 251 BOUVANT DR PRINCETON, NJ 08540 and the phone number is (609) 396-0708.

Internal Medicine with taxonomy code 207RX0202X and a focus in Medical Oncology.