JOSEPH H CALHOUN MD PC
NPI 1437105723
Ophthalmology in Philadelphia, PA

NPI Status: Active since May 26, 2006

Contact Information

840 WALNUT ST
SUITE 1210
PHILADELPHIA, PA
ZIP 19107
Phone: (215) 928-3245
Fax: (215) 928-3983

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  • Organization
  • Ophthalmology

About JOSEPH H CALHOUN MD PC

This page provides the complete NPI Profile along with additional information for Joseph H Calhoun Md Pc, a provider established in Philadelphia, Pennsylvania operating as a Ophthalmology. The healthcare provider is registered in the NPI registry with number 1437105723 assigned on May 2006. The practitioner's primary taxonomy code is 207W00000X. The provider is registered as an organization and their NPI record was last updated 16 years ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Dr. Joseph H Calhoun Md (President Of Corp)

NPI
1437105723
Provider Name
JOSEPH H CALHOUN MD PC
Entity Type
Organization
Location Address
840 WALNUT ST SUITE 1210 PHILADELPHIA, PA 19107
Location Phone
(215) 928-3245
Location Fax
(215) 928-3983
Mailing Address
677 W DEKALB PIKE SUITE 13 KING OF PRUSSIA, PA 19406
Mailing Phone
(610) 265-8393
Mailing Fax
(215) 928-3983
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
05-26-2006
Last Update Date
07-30-2010
Code Navigator

Ophthalmologists like Joseph H Calhoun Md Pc 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.

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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

Ophthalmology

Taxonomy Code
207W00000X
Type
Allopathic & Osteopathic Physicians
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.

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

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.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

DR. JOSEPH H CALHOUN MD

Authorized Official Title
PRESIDENT OF CORP
Authorized Official Phone
(610) 265-8393

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
2155833000OTHER (01)PAKEYSTONE HEALTH PLAN EAST
069447MEDICARE ID-TYPE UNSPECIFIED (04)PAGROUP PROVIDER NUMBER

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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 1437105723, we treat the final digit (3) 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 57. The final step is to find the difference between that total and the next multiple of ten (60 - 57 = 3).

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
4
Unchanged
Pos 3
3
Doubled → 6
Pos 4
7
Unchanged
Pos 5
1
Doubled → 2
Pos 6
0
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
7
Unchanged
Pos 9
2
Doubled → 4
Check
3
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 3 → 6 1 → 2 5 → 10 → 1 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 6 + 7 + 2 + 0 + 1 + 0 + 7 + 4 + 24 = 57

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

The next multiple of ten after 57 is 60. The difference is the calculated check digit.

60 - 57 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1437105723.

Other Providers at the Same Location


The following 19 providers are registered at the same or a nearby location.

Ophthalmology
840 WALNUT ST, STE 920
PHILADELPHIA, PA 19107
Ophthalmology
840 WALNUT ST, SUITE 1250
PHILADELPHIA, PA 19107
Ophthalmology
840 WALNUT ST, SUITE 920
PHILADELPHIA, PA 19107
Ophthalmology
840 WALNUT ST, STE 1120
PHILA, PA 19107
Ophthalmology
840 WALNUT ST, SUITE 1110
PHILADELPHIA, PA 19107
Ophthalmology
840 WALNUT ST, SUITE 1020
PHILADELPHIA, PA 19107
Optometrist
840 WALNUT ST
PHILADELPHIA, PA 19107
Optometrist
840 WALNUT ST, 930
PHILADELPHIA, PA 19107
Ophthalmology
840 WALNUT ST, 11TH FLOOR
PHILADELPHIA, PA 19107
Ophthalmology
840 WALNUT ST, SUITE 1020
PHILADELPHIA, PA 19107
Special Hospital
840 WALNUT ST, 15TH FLOOR
PHILADELPHIA, PA 19107
Optometrist (Corneal and Contact Management)
840 WALNUT ST, SUIT 920
PHILADELPHIA, PA 19107
Ophthalmology
840 WALNUT ST, SUITE 920
PHILADELPHIA, PA 19107
Ophthalmology
840 WALNUT ST, SUITE 200
PHILADELPHIA, PA 19107
Ophthalmology
840 WALNUT ST, SUITE 1230
PHILADELPHIA, PA 19107
Ophthalmology (Ophthalmic Plastic and Reconstructive Surgery)
840 WALNUT ST, SUITE 930
PHILADELPHIA, PA 19107
Ophthalmology
840 WALNUT ST
PHILADELPHIA, PA 19107
Ophthalmology (Ophthalmic Plastic and Reconstructive Surgery)
840 WALNUT ST
PHILADELPHIA, PA 19107
Ophthalmology
840 WALNUT ST, SUITE 930
PHILADELPHIA, PA 19107

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1437105723, enumerated as an "organization" on May 26, 2006.

The provider is located at 840 WALNUT ST SUITE 1210 PHILADELPHIA, PA 19107 and the phone number is (215) 928-3245.

Ophthalmology with taxonomy code 207W00000X.

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