GRAHAM JOHN NEWSTEAD M.D.
NPI 1720109986
Allergy & Immunology in Warwick, RI
NPI Status: Active since April 03, 2007
Contact Information
300 TOLLGATE ROAD
SUITE 204
WARWICK, RI
ZIP 02886
Phone: (401) 738-2400
Fax: (401) 732-8953
- Individual
- Male
- Allergy & Immunology
About GRAHAM NEWSTEAD
This page provides the complete NPI Profile along with additional information for Graham Newstead, a provider established in Warwick, Rhode Island with a medical specialization in Allergy & Immunology. The healthcare provider is registered in the NPI registry with number 1720109986 assigned on April 2007. The practitioner's primary taxonomy code is 207K00000X with license number MD04236 (RI). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1720109986
- Provider Name
- GRAHAM JOHN NEWSTEAD M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 300 TOLLGATE ROAD SUITE 204 WARWICK, RI 02886
- Location Phone
- (401) 738-2400
- Location Fax
- (401) 732-8953
- Mailing Address
- 300 TOLLGATE ROAD SUITE 204 WARWICK, RI 02886
- Mailing Phone
- (401) 738-2400
- Mailing Fax
- (401) 732-8953
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 04-03-2007
- Last Update Date
- 09-11-2025
- Code Navigator
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
Allergy & Immunology
- Taxonomy Code
- 207K00000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- MD04236
- License State
- RI
- 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.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 208000000X | Allopathic & Osteopathic Physicians | Pediatrics | MD04236 (RI) |
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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 1720109986, we treat the final digit (6) 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 6).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 64 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 3 providers are registered at the same or a nearby location.
WARWICK, RI 02886
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1720109986, enumerated as an "individual" on April 03, 2007.
The provider is located at 300 TOLLGATE ROAD SUITE 204 WARWICK, RI 02886 and the phone number is (401) 738-2400.
Allergy & Immunology with taxonomy code 207K00000X.
