DR. GEOFFREY W RAKE JR. M.D.
NPI 1306820261
Allergy & Immunology in Silver Spring, MD

NPI Status: Active since December 05, 2005

Contact Information

1335 E WEST HWY
SUITE 6-100
SILVER SPRING, MD
ZIP 20910
Phone: (301) 295-8127

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  • Individual
  • Male
  • Allergy & Immunology

About GEOFFREY RAKE

This page provides the complete NPI Profile along with additional information for Geoffrey Rake, a provider established in Silver Spring, Maryland with a medical specialization in Allergy & Immunology. The healthcare provider is registered in the NPI registry with number 1306820261 assigned on December 2005. The practitioner's primary taxonomy code is 207K00000X with license number 57833 (MA). The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1306820261
Provider Name
DR. GEOFFREY W RAKE JR. M.D.
Gender
Male
Entity Type
Individual
Location Address
1335 E WEST HWY SUITE 6-100 SILVER SPRING, MD 20910
Location Phone
(301) 295-8127
Mailing Address
11802 LISBOROUGH RD BOWIE, MD 20720
Mailing Phone
(301) 262-5201
Is Sole Proprietor?
Yes
Enumeration Date
12-05-2005
Last Update Date
07-08-2007
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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

Allergy & Immunology

Taxonomy Code
207K00000X
Type
Allopathic & Osteopathic Physicians
License No.
57833
License State
MA
Taxonomy Description
An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.

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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 1306820261, 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 49. The final step is to find the difference between that total and the next multiple of ten (50 - 49 = 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
0
Doubled → 0
Pos 4
6
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
2
Unchanged
Pos 7
0
Doubled → 0
Pos 8
2
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
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 0 → 0 8 → 16 → 7 0 → 0 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 + 6 + 2 + 0 + 2 + 1 + 2 + 24 = 49

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

The next multiple of ten after 49 is 50. The difference is the calculated check digit.

50 - 49 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1306820261.

Other Providers at the Same Location


The following 4 providers are registered at the same or a nearby location.

Registered Nurse
1335 E WEST HWY, SUITE 6-100
SILVER SPRING, MD 20910
Internal Medicine
1335 E WEST HWY, SUITE 6-100
SILVER SPRING, MD 20910
Registered Nurse
1335 E WEST HWY, SUITE 3100
SILVER SPRING, MD 20910
Pharmacist
1335 E WEST HWY, SUITE 6-100
SILVER SPRING, MD 20910

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1306820261, enumerated as an "individual" on December 05, 2005.

The provider is located at 1335 E WEST HWY SUITE 6-100 SILVER SPRING, MD 20910 and the phone number is (301) 295-8127.

Allergy & Immunology with taxonomy code 207K00000X.