OON TIAN TAN M.D
NPI 1992766596
Dermatology in Boston, MA

NPI Status: Active since March 31, 2006

Contact Information

243 CHARLES STREET
BOSTON, MA
ZIP 02114
Phone: (617) 573-6493
Fax: (617) 424-8428

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  • Individual
  • Female
  • Dermatology

About OON TAN

This page provides the complete NPI Profile along with additional information for Oon Tan, a provider established in Boston, Massachusetts with a medical specialization in Dermatology. The healthcare provider is registered in the NPI registry with number 1992766596 assigned on March 2006. The practitioner's primary taxonomy code is 207N00000X with license number 51655 (MA). The provider is registered as an individual and her NPI record was last updated 11 years ago.

NPI
1992766596
Provider Name
OON TIAN TAN M.D
Gender
Female
Entity Type
Individual
Location Address
243 CHARLES STREET BOSTON, MA 02114
Location Phone
(617) 573-6493
Location Fax
(617) 424-8428
Mailing Address
243 CHARLES STREET BOSTON, MA 02114
Mailing Phone
(617) 573-6493
Mailing Fax
(617) 424-8428
Is Sole Proprietor?
No
Enumeration Date
03-31-2006
Last Update Date
10-08-2015
Code Navigator

A dermatologist like Oon Tan 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.
51655
License State
MA
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.

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Destruction of precancer skin growth, 1 growth

"Destruction of precancer skin growth" is a procedure that eliminates a single precancerous skin growth. This is done to prevent it from developing into skin cancer. The growth may be removed using various methods such as cryotherapy (freezing), laser therapy, or topical medications.

This service was performed 58 times for 40 patients

Destruction of precancer skin growth, 2-14 growths

This procedure involves removing 2-14 precancerous skin growths. The growths are treated to prevent them from potentially developing into skin cancer. The process is safe, with minimal discomfort, and promotes healthier skin.

This service was performed 55 times for 38 patients

Established patient office or other outpatient visit, 10-19 minutes

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

This service was performed 11 times for 11 patients

Established patient office or other outpatient visit, 20-29 minutes

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

This service was performed 98 times for 69 patients

Established patient office or other outpatient visit, 30-39 minutes

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

This service was performed 135 times for 100 patients

New patient office or other outpatient visit, 30-44 minutes

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

This service was performed 27 times for 27 patients

Punch biopsy, first skin growth

A punch biopsy is a procedure where a small, circular tool is used to remove a sample of skin tissue. This is usually done to test a skin growth for potential issues. You may feel a pinch, but discomfort is minimal. The area heals quickly.

This service was performed 18 times for 16 patients

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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 1992766596, we treat the final digit (6) 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 74. The final step is to find the difference between that total and the next multiple of ten (80 - 74 = 6).

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
6
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
5
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
6
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 6 → 12 → 3 9 → 18 → 9

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 + 6 + 1 + 2 + 5 + 1 + 8 + 24 = 74

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

The next multiple of ten after 74 is 80. The difference is the calculated check digit.

80 - 74 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1992766596.

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
Ophthalmology
243 CHARLES STREET, MASSACHUSETTS EYE AND EAR INFIRMARY
BOSTON, MA 02114
Anesthesiology
243 CHARLES STREET, MASSACHUSETTS EYE AND EAR INFIRMARY
BOSTON, MA 02114
Optometrist
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 1992766596, enumerated as an "individual" on March 31, 2006.

The provider is located at 243 CHARLES STREET BOSTON, MA 02114 and the phone number is (617) 573-6493.

Dermatology with taxonomy code 207N00000X.