DONG L CHANG M.D., INC.
NPI 1235136243
Dermatology - Dermatopathology in Arcadia, CA


Quality Rating: 75 out of 100 score

NPI Status: Active since July 05, 2005

Contact Information

100 N SANTA ANITA AVE
ARCADIA, CA
ZIP 91006
Phone: (626) 821-5998
Fax: (626) 821-5990

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  • Individual
  • Male
  • Dermatology
  • Dermatopathology
  • CLIA Number: 05D0565339
  • CLIA Cert. Type: Physician Office
  • CLIA Exp. Date: 04-09-2026

About DONG CHANG

This page provides the complete NPI Profile along with additional information for Dong Chang, a provider established in Arcadia, California with a medical specialization in Dermatology, focusing in dermatopathology . The healthcare provider is registered in the NPI registry with number 1235136243 assigned on July 2005. The practitioner's primary taxonomy code is 207ND0900X with license number A33186 (CA). The provider is registered as an individual and his NPI record was last updated 3 years ago.

NPI
1235136243
Provider Name
DONG L CHANG M.D., INC.
Gender
Male
Entity Type
Individual
Location Address
100 N SANTA ANITA AVE ARCADIA, CA 91006
Location Phone
(626) 821-5998
Location Fax
(626) 821-5990
Mailing Address
100 N SANTA ANITA AVE ARCADIA, CA 91006
Mailing Phone
(626) 821-5998
Mailing Fax
(626) 821-5990
Is Sole Proprietor?
Yes
Enumeration Date
07-05-2005
Last Update Date
10-06-2023
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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

Dermatology Dermatopathology

Taxonomy Code
207ND0900X
Type
Allopathic & Osteopathic Physicians
License No.
A33186
License State
CA
Taxonomy Description
A dermatopathologist has the expertise to diagnose and monitor diseases of the skin including infectious, immunologic, degenerative and neoplastic diseases. This entails the examination and interpretation of specially prepared tissue sections, cellular scrapings and smears of skin lesions by means of routine and special (electron and fluorescent) microscopes.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1207N00000XAllopathic & Osteopathic Physicians

Dermatology

A33186 (CA)
2207ND0101XAllopathic & Osteopathic Physicians

Dermatology
MOHS-Micrographic Surgery

A33186 (CA)
3207NS0135XAllopathic & Osteopathic Physicians

Dermatology
Procedural Dermatology

A33186 (CA)

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.

Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm

This procedure involves the complex repair of a wound in areas like the forehead, cheeks, chin, mouth, neck, underarms, hands, or feet. The wound size ranges from 2.6-7.5 cm. The process includes cleaning, removing damaged tissue, and stitching the wound for proper healing.

This service was performed 11 times for 11 patients

Destruction of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 0.5 cm or less

This is a procedure where a small cancerous skin growth on the face, ears, eyelids, nose, lips, or mouth is removed. The growth is 0.5 cm or less. The aim is to eliminate the cancer and prevent it from spreading. It's a common, safe method to treat skin cancer.

This service was performed 13 times for 11 patients

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 216 times for 140 patients

Destruction of precancer skin growth, 15 or more growths

This procedure involves removing 15 or more precancerous skin growths to prevent them from developing into cancer. It's done using various methods like freezing, creams, or minor surgery. The goal is to protect your health by stopping cancer before it starts.

This service was performed 72 times for 48 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 659 times for 114 patients

Destruction of skin growth, 1-14 growths

"Destruction of skin growth" refers to a procedure where 1-14 abnormal skin growths are removed. This is done using methods such as freezing, burning, or laser therapy. It helps prevent the growth from causing discomfort or turning into a more serious condition.

This service was performed 174 times for 138 patients

Destruction of skin growth, 15 or more growths

"Destruction of skin growth" refers to a procedure where unwanted skin growths, such as warts or moles, are removed. In this case, 15 or more growths are treated. Techniques may include freezing, burning, or laser therapy. It's a safe, quick process to improve skin health.

This service was performed 28 times for 21 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 13 times for 12 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 481 times for 249 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 464 times for 306 patients

Established patient office or other outpatient visit, 40-54 minutes

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

This service was performed 32 times for 30 patients

Extended patient service without direct patient contact, first hour

Extended patient service without direct contact refers to a healthcare service where professionals spend time reviewing your health records, consulting with other providers, or planning your care without you being present, for the first hour.

This service was performed 15 times for 15 patients

Injection into skin growth, 1-7 growths

This procedure involves injecting medication into 1-7 skin growths. The medication helps to reduce the size of the growths or completely eliminate them. It's a simple, quick, and usually painless process performed by a medical professional.

This service was performed 59 times for 41 patients

Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm

This procedure involves the repair of a wound between 2.6-7.5 cm located on the scalp, underarms, trunk, arms, or legs. The process includes cleaning, debridement (removal of damaged tissue), and suturing (stitching) of the wound to promote healing.

This service was performed 11 times for 11 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 103 times for 103 patients

New patient office or other outpatient visit, 45-59 minutes

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

This service was performed 22 times for 22 patients

Pathology examination of tissue using a microscope, intermediate complexity

A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.

This service was performed 358 times for 214 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 14 times for 14 patients

Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks

This procedure involves the careful removal of a growth from the head, neck, hands, or feet. The removed tissue, divided into 1-5 blocks, is then examined under a microscope to study its characteristics and determine the nature of the growth.

This service was performed 25 times for 23 patients

Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks

This procedure involves the careful removal of abnormal growths from the head, neck, hands, or feet. The removed tissues, divided into 1-5 blocks, are then examined under a microscope to identify any irregularities. The process may be carried out in multiple stages for thorough examination.

This service was performed 15 times for 12 patients

Shaving of skin growth of body, arms, or legs, 0.5 cm or less

This is a simple procedure where a small skin growth on your body, arms, or legs, measuring 0.5 cm or less, is carefully shaved off. It's typically quick, with minimal discomfort. It helps to prevent any potential health issues related to the growth.

This service was performed 30 times for 25 patients

Shaving of skin growth of body, arms, or legs, 0.6-1.0 cm

This procedure involves the careful removal of a small skin growth on the body, arms, or legs. It's done by shaving off the growth that's 0.6-1.0 cm in size. It's a common, safe method to treat non-cancerous skin growths and improve skin appearance.

This service was performed 35 times for 31 patients

Shaving of skin growth of body, arms, or legs, 1.1-2.0 cm

This procedure involves the careful removal of a skin growth on your body, arms, or legs. The growth is between 1.1 and 2.0 cm. A special tool is used to shave off the growth, which is a quick and relatively painless process.

This service was performed 21 times for 21 patients

Shaving of skin growth of face, ears, eyelids, nose, lips, or mouth, 0.5 cm or less

This procedure involves the careful removal of a small skin growth on the face or related areas. A medical professional uses a special tool to gently shave off the growth, which is 0.5 cm or less. It's a common, safe procedure.

This service was performed 51 times for 42 patients

Shaving of skin growth of face, ears, eyelids, nose, lips, or mouth, 0.6-1.0 cm

This procedure involves removing a small skin growth on the face or related areas like the ears, eyelids, nose, lips, or mouth. The growth is gently shaved off, typically under local anesthesia. It's a quick, safe process for growths between 0.6-1.0 cm in size.

This service was performed 30 times for 26 patients

Shaving of skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm

This procedure involves the careful removal of a skin growth on the face, ears, eyelids, nose, lips, or mouth. The growth being treated is between 1.1 and 2.0 cm in size. The process is typically quick, with minimal discomfort, and aids in maintaining skin health.

This service was performed 28 times for 22 patients

Shaving of skin growth of scalp, neck, hands, feet, or genitals, 0.5 cm or less

This is a procedure where a small skin growth on the scalp, neck, hands, or feet, measuring 0.5 cm or less, is carefully removed. The process involves shaving off the growth layer by layer to ensure complete removal. It's a safe and common practice.

This service was performed 12 times for 12 patients

Shaving of skin growth of scalp, neck, hands, feet, or genitals, 0.6-1.0 cm

This procedure involves the careful removal of a small skin growth, between 0.6-1.0 cm in size, from the scalp, neck, hands, or feet. It's done using a special tool to gently shave off the growth, ensuring minimal discomfort.

This service was performed 13 times for 12 patients

Simple or single drainage of skin abscess

A simple or single drainage of skin abscess is a procedure to remove pus from a skin infection. A small cut is made on the abscess, the pus is drained out, and the area is cleaned. This helps to reduce pain, speed up recovery, and prevent the spread of infection.

This service was performed 16 times for 15 patients

Tissue fungi or parasites

Tissue fungi or parasites refer to microorganisms that can infect various parts of the body. This may cause symptoms like fatigue, fever, and skin changes. Diagnosis involves testing samples from the affected area. Treatment often includes medication to eliminate the infection.

This service was performed 47 times for 43 patients

Overall MIPS Quality Performance

The provider participated in CMS Quality Payment Program under the Merit-based Incentive Payment System (MIPS) and has an overall final score of 75, based on four performance areas: quality, improvement activities, promoting interoperability, and cost. The purpose of this information is to help people with Medicare make informed decisions and incentivize doctors and clinicians to maximize performance.

The Merit-based Incentive Payment System (MIPS) is a way providers could use to participate in CMS Quality Payment Program (QPP). The MIPS program affects clinician reimbursement for Part B covered professional services and also rewards them for improving the quality of patient care and outcomes.

  • Final Score: 75 out of 100

    The MIPS program evaluates providers across multiple categories with a specific weight for each category resulting a in a MIPS final score that ranges from 0 to 100 points. The MIPS Final Score determines whether providers receive a negative, neutral or positive MIPS payment adjustment.

  • Quality Score: N/A

    The Quality category assesses providers performance on clinical practices and patient outcomes under the traditional MIPS program. The quality measures help identify the quality of healthcare processes, outcomes, and patient experiences. The Quality measure category compromises 40% providers final MPIS scores.

    There are six collection types for MIPS quality measures: Electronic Clinical Quality Measures (eCQMs), MIPS Clinical Quality Measures (CQMs), Qualified Clinical Data Registry (QCDR) Measures, Medicare Part B claims measures, CMS Web Interface measures and The Consumer Assessment of Healthcare Providers and Systems (CAHPS) for MIPS Survey.

  • Promoting Interoperability Score: N/A

    The Interoperability category measures the providers ability to use technology to exchange and make use of healthcare information in a way that is less burdensome and improves outcomes. The Interoperability measure category compromises 25% providers final MPIS scores.

    The MIPS Interoperability measure focuses on the use of certified electronic health record technology (CEHRT) to improve patient access health information, the exchange of information between clinicians and pharmacies and the systematic collection, analysis, and interpretation of healthcare data.

  • Improvement Activities Score: N/A

    The Improvement Activities performance category evaluates the providers participation in clinical activities that support the improvement of clinical practice, care delivery, and outcomes. Providers have the option to choose 2 to 4 activities from an inventory of over 100 improvement activities. Providers typically choose the activities that best fit their needs. The improvement activities measure category compromises 15% providers final MPIS scores.

    The Improvement measures aim to better patient engagement, patient safety and other areas of patient care. The Improvement Activities category compromises 15% of providers final MPIS scores.

  • Cost Score: N/A

    The Cost performance category asses the amount and types of services provided and how clinicians coordinate care and seek improvement of health outcomes by ensuring patients receive the appropriate services.

    Although providers don't determine the price of healthcare services they are important in delivering high-quality care at a reasonable cost. The Cost measures category compromises 20% of providers final MPIS scores.

  • Cost Score: N/A

    The Cost performance category asses the amount and types of services provided and how clinicians coordinate care and seek improvement of health outcomes by ensuring patients receive the appropriate services.

    Although providers don't determine the price of healthcare services they are important in delivering high-quality care at a reasonable cost. The Cost measures category compromises 20% of providers final MPIS scores.

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
05D0565339
Facility Type
Physician Office
Certificate Effective Date
April 10, 2024
Certificate Expiration Date
April 09, 2026
Laboratory Director
CARL J. CHANG MD
Certificate Type
Certificate for Provider-Performed Microscopy Procedures (PPMP)
Certificate Type Description
This CLIA certificate is issued to Dong Chang in which a physician, midlevel practitioner or dentist that performs specific microscopy procedures during the course of a patient's visit. A limited list of provider-performed microscopy procedures is included under this certificate type, which are categorized as moderate 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 1235136243, 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
2
Unchanged
Pos 3
3
Doubled → 6
Pos 4
5
Unchanged
Pos 5
1
Doubled → 2
Pos 6
3
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
2
Unchanged
Pos 9
4
Doubled → 8
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 6 → 12 → 3 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 6 + 5 + 2 + 3 + 1 + 2 + 2 + 8 + 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 1235136243.

Other Providers at the Same Location


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

Specialist
100 N SANTA ANITA AVE
ARCADIA, CA 91006
Dermatology
100 N SANTA ANITA AVE
ARCADIA, CA 91006
Clinic/Center (Health Service)
100 N SANTA ANITA AVE
ARCADIA, CA 91006
Dermatology
100 N SANTA ANITA AVE
ARCADIA, CA 91006
Physician Assistant (Medical)
100 N SANTA ANITA AVE
ARCADIA, CA 91006
Internal Medicine (Hematology & Oncology)
100 N SANTA ANITA AVE
ARCADIA, CA 91006
Physician Assistant
100 N SANTA ANITA AVE
ARCADIA, CA 91006
Dermatology (Dermatopathology)
100 N SANTA ANITA AVE
ARCADIA, CA 91006

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1235136243, enumerated as an "individual" on July 05, 2005.

The provider is located at 100 N SANTA ANITA AVE ARCADIA, CA 91006 and the phone number is (626) 821-5998.

Dermatology with taxonomy code 207ND0900X and a focus in Dermatopathology.