DR. KEITH MARK HULL MD, PHD
NPI 1053688804
Internal Medicine - Rheumatology in Gaithersburg, MD

NPI Status: Active since November 22, 2011

Contact Information

7 METROPOLITAN CT STE 1
GAITHERSBURG, MD
ZIP 20878
Phone: (240) 773-0300

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  • Individual
  • Male
  • Internal Medicine
  • Rheumatology

About KEITH HULL

This page provides the complete NPI Profile along with additional information for Keith Hull, an internist established in Gaithersburg, Maryland with a medical specialization in Internal Medicine, focusing in rheumatology . The healthcare provider is registered in the NPI registry with number 1053688804 assigned on November 2011. The practitioner's primary taxonomy code is 207RR0500X with license number D0063885 (MD). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1053688804
Provider Name
DR. KEITH MARK HULL MD, PHD
Gender
Male
Entity Type
Individual
Location Address
7 METROPOLITAN CT STE 1 GAITHERSBURG, MD 20878
Location Phone
(240) 773-0300
Mailing Address
7 METROPOLITAN CT STE 1 GAITHERSBURG, MD 20878
Mailing Phone
(240) 773-0300
Is Sole Proprietor?
Yes
Enumeration Date
11-22-2011
Last Update Date
03-29-2025
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An internist like Keith Hull 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 Rheumatology

Taxonomy Code
207RR0500X
Type
Allopathic & Osteopathic Physicians
License No.
D0063885
License State
MD
Taxonomy Description
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.

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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 1053688804, 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 56. The final step is to find the difference between that total and the next multiple of ten (60 - 56 = 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
0
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
3
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
8
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
8
Unchanged
Pos 9
0
Doubled → 0
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 5 → 10 → 1 6 → 12 → 3 8 → 16 → 7 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 1 + 0 + 3 + 1 + 2 + 8 + 1 + 6 + 8 + 0 + 24 = 56

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

The next multiple of ten after 56 is 60. The difference is the calculated check digit.

60 - 56 = 4
This NPI is valid
The calculated check digit is 4, which matches the last digit of 1053688804.

Other Providers at the Same Location


The following 8 providers are registered at the same or a nearby location.

Voluntary or Charitable
7 METROPOLITAN CT STE 1
GAITHERSBURG, MD 20878
Internal Medicine (Infectious Disease)
7 METROPOLITAN CT STE 1
GAITHERSBURG, MD 20878
Specialist
7 METROPOLITAN CT STE 1
GAITHERSBURG, MD 20878
Nurse Practitioner (Family)
7 METROPOLITAN CT STE 1
GAITHERSBURG, MD 20878
Internal Medicine
7 METROPOLITAN CT STE 1
GAITHERSBURG, MD 20878
Internal Medicine
7 METROPOLITAN CT STE 1
GAITHERSBURG, MD 20878
Internal Medicine (Nephrology)
7 METROPOLITAN CT STE 1
GAITHERSBURG, MD 20878
Physician Assistant
7 METROPOLITAN CT STE 1
GAITHERSBURG, MD 20878

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1053688804, enumerated as an "individual" on November 22, 2011.

The provider is located at 7 METROPOLITAN CT STE 1 GAITHERSBURG, MD 20878 and the phone number is (240) 773-0300.

Internal Medicine with taxonomy code 207RR0500X and a focus in Rheumatology.