UNION SQUARE DERMATOLOGY A PROFESSIONAL CORPORATION
NPI 1023263613
Dermatology in San Francisco, CA
NPI Status: Active since November 24, 2008
Contact Information
450 SUTTER ST
SUITE 830
SAN FRANCISCO, CA
ZIP 94108
Phone: (415) 393-0550
Fax: (415) 393-9956
- Organization
- Dermatology
- CLIA Number: 05D1059083
- CLIA Cert. Type: Physician Office
- CLIA Exp. Date: 02-19-2028
About UNION SQUARE DERMATOLOGY A PROFESSIONAL CORPORATION
This page provides the complete NPI Profile along with additional information for Union Square Dermatology A Professional Corporation, a provider established in San Francisco, California operating as a Dermatology. The healthcare provider is registered in the NPI registry with number 1023263613 assigned on November 2008. The practitioner's primary taxonomy code is 207N00000X with license number G 80000 (CA). The provider is registered as an organization and their NPI record was last updated 18 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. Vail Charles Reese M.d. (Physician)
- NPI
- 1023263613
- Provider Name
- UNION SQUARE DERMATOLOGY A PROFESSIONAL CORPORATION
- Entity Type
- Organization
- Location Address
- 450 SUTTER ST SUITE 830 SAN FRANCISCO, CA 94108
- Location Phone
- (415) 393-0550
- Location Fax
- (415) 393-9956
- Mailing Address
- 450 SUTTER ST SUITE 830 SAN FRANCISCO, CA 94108
- Mailing Phone
- (415) 393-0550
- Mailing Fax
- (415) 393-9956
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 11-24-2008
- Last Update Date
- 11-24-2008
- Code Navigator
A dermatologist like Union Square Dermatology A Professional Corporation is a medical specialty involving the management of skin conditions and diseases. Dermatologists diagnose some sexually transmitted diseases, warts, cancer, acne, dermatitis and may offer cosmetic treatments, and therapies that reduce age spots and wrinkles.
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
Dermatology
- Taxonomy Code
- 207N00000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- G 80000
- License State
- CA
- Taxonomy Description
- A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.
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.
CLIA Information
The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:
- CLIA Number
- 05D1059083
- Facility Type
- Physician Office
- Certificate Effective Date
- February 20, 2026
- Certificate Expiration Date
- February 19, 2028
- Laboratory Director
- VAIL C. REESE
- Certificate Type
- Certificate of Compliance
- Certificate Type Description
- This CLIA certificate is issued to Union Square Dermatology A Professional Corporation after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements. This type of certificate is issued to laboratories that perform nonwaived (moderate and/or high complexity) testing.
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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 1023263613, 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.
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 57 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
SAN FRANCISCO, CA 94108
SAN FRANCISCO, CA 94108
SAN FRANCISCO, CA 94108
SAN FRANCISCO, CA 94108
SAN FRANCISCO, CA 94108
SAN FRANCISCO, CA 94108
SAN FRANCISCO, CA 94108
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1023263613, enumerated as an "organization" on November 24, 2008.
The provider is located at 450 SUTTER ST SUITE 830 SAN FRANCISCO, CA 94108 and the phone number is (415) 393-0550.
Dermatology with taxonomy code 207N00000X.
