DR. JOSHUA KRUGER MD, PHD
NPI 1023390192
Ophthalmology in Boston, MA

NPI Status: Active since September 15, 2011

Contact Information

243 CHARLES STREET
MASSACHUSETTS EYE AND EAR INFIRMARY
BOSTON, MA
ZIP 02114
Phone: (617) 935-5838
Fax: (617) 573-3851

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  • Individual
  • Male
  • Ophthalmology

About JOSHUA KRUGER

This page provides the complete NPI Profile along with additional information for Joshua Kruger, a provider established in Boston, Massachusetts with a medical specialization in Ophthalmology. The healthcare provider is registered in the NPI registry with number 1023390192 assigned on September 2011. The practitioner's primary taxonomy code is 207W00000X with license number 247943 (MA). The provider is registered as an individual and his NPI record was last updated 15 years ago.

NPI
1023390192
Provider Name
DR. JOSHUA KRUGER MD, PHD
Gender
Male
Entity Type
Individual
Location Address
243 CHARLES STREET MASSACHUSETTS EYE AND EAR INFIRMARY BOSTON, MA 02114
Location Phone
(617) 935-5838
Location Fax
(617) 573-3851
Mailing Address
243 CHARLES STREET MASSACHUSETTS EYE AND EAR INFIRMARY BOSTON, MA 02114
Mailing Phone
(617) 935-5838
Mailing Fax
(617) 573-3851
Is Sole Proprietor?
No
Enumeration Date
09-15-2011
Last Update Date
09-15-2011
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Ophthalmologists like Joshua Kruger specialize in diagnosing and treating eye conditions. They may perform surgeries to correct vision issues or prevent vision loss due to diseases like glaucoma. Additionally, they can provide eyeglasses, prescribe contact lenses, and offer other vision-related services.

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

Ophthalmology

Taxonomy Code
207W00000X
Type
Allopathic & Osteopathic Physicians
License No.
247943
License State
MA
Taxonomy Description
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

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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 1023390192, we treat the final digit (2) 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 58. The final step is to find the difference between that total and the next multiple of ten (60 - 58 = 2).

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
2
Doubled → 4
Pos 4
3
Unchanged
Pos 5
3
Doubled → 6
Pos 6
9
Unchanged
Pos 7
0
Doubled → 0
Pos 8
1
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
2
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 2 → 4 3 → 6 0 → 0 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 4 + 3 + 6 + 9 + 0 + 1 + 1 + 8 + 24 = 58

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

The next multiple of ten after 58 is 60. The difference is the calculated check digit.

60 - 58 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1023390192.

Other Providers at the Same Location


The following 15 providers are registered at the same or a nearby location.

Anesthesiology
243 CHARLES STREET, MEEI DEPT OF ANESTHESIOLOGY SUITE 712
BOSTON, MA 02114
Oral & Maxillofacial Surgery
243 CHARLES STREET, MASS EYE AND EAR INFIRMARY
BOSTON, MA 02114
Ophthalmology
243 CHARLES STREET, MASSACHUSETTS EYE & EAR INFIRMARY
BOSTON, MA 02114
Technician/Technologist (Optician)
243 CHARLES STREET
BOSTON, MA 02114
Ophthalmology
243 CHARLES STREET
BOSTON, MA 02114
Pharmacist
243 CHARLES STREET
BOSTON, MA 02114
Pharmacist
243 CHARLES STREET
BOSTON, MA 02114
Otolaryngology
243 CHARLES STREET, MASSACHUSETTS EYE AND EAR INFIRMARY
BOSTON, MA 02114
Ophthalmology
243 CHARLES STREET
BOSTON, MA 02114
Nurse Practitioner (Pediatrics)
243 CHARLES STREET, ANESTHESIA DEPARTMENT
BOSTON, MA 02114
Anesthesiology
243 CHARLES STREET, MASSACHUSETTS EYE AND EAR INFIRMARY
BOSTON, MA 02114
Optometrist
243 CHARLES STREET
BOSTON, MA 02114
Dermatology
243 CHARLES STREET
BOSTON, MA 02114
Student in an Organized Health Care Education/Training Program
243 CHARLES STREET, MASS EYE & EAR INFIRMARY
BOSTON, MA 02114
Otolaryngology
243 CHARLES STREET, DEPARTMENT OF OTOLARYNGOLOGY - LEVEL 4
BOSTON, MA 02114

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1023390192, enumerated as an "individual" on September 15, 2011.

The provider is located at 243 CHARLES STREET MASSACHUSETTS EYE AND EAR INFIRMARY BOSTON, MA 02114 and the phone number is (617) 935-5838.

Ophthalmology with taxonomy code 207W00000X.