JOHN G GRANTHAM M.D.
NPI 1992789614
Radiology - Diagnostic Radiology in Boulder, CO

NPI Status: Active since December 06, 2005

Contact Information

2750 BROADWAY ST
BOULDER, CO
ZIP 80304
Phone: (303) 440-3000

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  • Individual
  • Male
  • Radiology
  • Diagnostic Radiology

About JOHN GRANTHAM

This page provides the complete NPI Profile along with additional information for John Grantham, a provider established in Boulder, Colorado with a medical specialization in Radiology, focusing in diagnostic radiology . The healthcare provider is registered in the NPI registry with number 1992789614 assigned on December 2005. The practitioner's primary taxonomy code is 2085R0202X with license number 26497 (CO). The provider is registered as an individual and his NPI record was last updated 14 years ago.

NPI
1992789614
Provider Name
JOHN G GRANTHAM M.D.
Gender
Male
Entity Type
Individual
Location Address
2750 BROADWAY ST BOULDER, CO 80304
Location Phone
(303) 440-3000
Mailing Address
2750 BROADWAY ST BOULDER, CO 80304
Mailing Phone
(303) 440-3000
Is Sole Proprietor?
No
Enumeration Date
12-06-2005
Last Update Date
10-31-2012
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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

Radiology Diagnostic Radiology

Taxonomy Code
2085R0202X
Type
Allopathic & Osteopathic Physicians
License No.
26497
License State
CO
Taxonomy Description
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
12258MEDICARE ID-TYPE UNSPECIFIED (04)CO 
D24801MEDICARE UPIN (02) 

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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 1992789614, we treat the final digit (4) 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 76. The final step is to find the difference between that total and the next multiple of ten (80 - 76 = 4).

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
9
Unchanged
Pos 3
9
Doubled → 18 → 1 + 8
Pos 4
2
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
8
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
6
Unchanged
Pos 9
1
Doubled → 2
Check
4
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 9 → 18 → 9 7 → 14 → 5 9 → 18 → 9 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 1 + 8 + 2 + 1 + 4 + 8 + 1 + 8 + 6 + 2 + 24 = 76

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

The next multiple of ten after 76 is 80. The difference is the calculated check digit.

80 - 76 = 4
This NPI is valid
The calculated check digit is 4, which matches the last digit of 1992789614.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Ophthalmology
2750 BROADWAY ST
BOULDER, CO 80304
Psychiatry & Neurology (Neurology)
2750 BROADWAY ST
BOULDER, CO 80304
Internal Medicine (Rheumatology)
2750 BROADWAY ST
BOULDER, CO 80304
Internal Medicine (Endocrinology, Diabetes & Metabolism)
2750 BROADWAY ST
BOULDER, CO 80304
Family Medicine
2750 BROADWAY ST
BOULDER, CO 80304
Orthopaedic Surgery
2750 BROADWAY ST
BOULDER, CO 80304
Physician Assistant (Medical)
2750 BROADWAY ST
BOULDER, CO 80304
Nurse Practitioner (Adult Health)
2750 BROADWAY ST
BOULDER, CO 80304
Physician Assistant (Medical)
2750 BROADWAY ST
BOULDER, CO 80304
Emergency Medicine
2750 BROADWAY ST
BOULDER, CO 80304
Registered Nurse (Ambulatory Care)
2750 BROADWAY ST
BOULDER, CO 80304
Anesthesiology (Pain Medicine)
2750 BROADWAY ST
BOULDER, CO 80304
Podiatrist (Foot & Ankle Surgery)
2750 BROADWAY ST
BOULDER, CO 80304
Occupational Therapist
2750 BROADWAY ST, PT
BOULDER, CO 80304
Physician Assistant
2750 BROADWAY ST
BOULDER, CO 80304
Anesthesiology (Pain Medicine)
2750 BROADWAY ST
BOULDER, CO 80304
Audiologist
2750 BROADWAY ST
BOULDER, CO 80304
Physician Assistant
2750 BROADWAY ST
BOULDER, CO 80304
Clinic/Center (Ambulatory Surgical)
2750 BROADWAY ST
BOULDER, CO 80304
Audiologist
2750 BROADWAY ST
BOULDER, CO 80304

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1992789614, enumerated as an "individual" on December 06, 2005.

The provider is located at 2750 BROADWAY ST BOULDER, CO 80304 and the phone number is (303) 440-3000.

Radiology with taxonomy code 2085R0202X and a focus in Diagnostic Radiology.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.