DR. ANNA R CHANG M.D.
NPI 1568402931
Internal Medicine in Concord, CA


Quality Rating: 85.73 out of 100 score

NPI Status: Active since June 07, 2006

Contact Information

2700 GRANT ST
SUITE 200
CONCORD, CA
ZIP 94520
Phone: (925) 687-8860
Fax: (925) 687-1570

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  • Individual
  • Female
  • Years of Experience 29
  • Internal Medicine
  • Accepts Medicare Approved Payment
  • PECOS Enrolled
  • Medicare Quality Reporting

About ANNA CHANG

This page provides the complete NPI Profile along with additional information for Anna Chang, an internist established in Concord, California with a medical specialization in Internal Medicine and more than 29 years of experience. She graduated from University Of California, San Diego School Of Medicine in 1998. The healthcare provider is registered in the NPI registry with number 1568402931 assigned on June 2006. The practitioner's primary taxonomy code is 207R00000X with license number A69618 (CA). The provider is registered as an individual and her NPI record was last updated 14 years ago.

NPI
1568402931
Provider Name
DR. ANNA R CHANG M.D.
Gender
Female
Entity Type
Individual
Location Address
2700 GRANT ST SUITE 200 CONCORD, CA 94520
Location Phone
(925) 687-8860
Location Fax
(925) 687-1570
Mailing Address
DEPT 34929 P.O. BOX 39000 SAN FRANCISCO, CA 94139
Mailing Phone
(925) 952-2828
Mailing Fax
(925) 687-1570
Medical School Name
UNIVERSITY OF CALIFORNIA, SAN DIEGO SCHOOL OF MEDICINE
Graduation Year
1998
Is Sole Proprietor?
No
Enumeration Date
06-07-2006
Last Update Date
06-18-2012
Code Navigator

An internist like Anna Chang is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

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

Internal Medicine

Taxonomy Code
207R00000X
Type
Allopathic & Osteopathic Physicians
License No.
A69618
License State
CA
Taxonomy Description
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

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.

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
H40380MEDICARE UPIN (02)CA 
P00368846MEDICARE PIN (08)CA 
00A696181MEDICARE PIN (08)CA 
00A696180MEDICAID (05)CA 

Medicare Participation & PECOS Enrollment Status

Anna Chang is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Anna Chang is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 6608836168

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20041019000322

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Provider Referred Orders for Durable Medical Equipment, Devices & Supplies

The following list reflects the services, supplies or durable medical equipment ordered by this provider to a DME supplier on behalf of patients. The information below is derived from Medicare claims data and reflects the BETOS category, HCPCS code information and the number times each service was submitted under the Medicare fee-for-service program.

Durable Medical Equipment

  • DME-Other DME (DE017N)

    Supplies for maintenance of insulin infusion catheter, per week (HCPCS:A4224)

    6 DME suppliers used 38 Medicare Claims 484 Services Paid

  • DME-Other DME (DE017N)

    Supplies for external insulin infusion pump, syringe type cartridge, sterile, each (HCPCS:A4225)

    5 DME suppliers used 38 Medicare Claims 1245 Services Paid

  • DME-Other DME (DE017N)

    Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips (HCPCS:A4253)

    38 DME suppliers used 121 Medicare Claims 397 Services Paid

  • DME-Medical/Surgical Supplies (DA000N)

    Lancets, per box of 100 (HCPCS:A4259)

    16 DME suppliers used 32 Medicare Claims 55 Services Paid

  • DME-Other DME (DE017N)

    External ambulatory infusion pump, insulin (HCPCS:E0784)

    2 DME suppliers used 25 Medicare Claims 25 Services Paid

  • DME-Other DME (DE017N)

    Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service (HCPCS:K0553)

    11 DME suppliers used 384 Medicare Claims 384 Services Paid

  • DME-Other DME (DE017N)

    Receiver (monitor), dedicated, for use with therapeutic glucose continuous monitor system (HCPCS:K0554)

    3 DME suppliers used 17 Medicare Claims 17 Services Paid

Unknown

  • Treatment-Injections and Infusions (nononcologic) (RI000N)

    Insulin for administration through dme (i.e., insulin pump) per 50 units (HCPCS:J1817)

    7 DME suppliers used 20 Medicare Claims 2550 Services Paid

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.

Administration of influenza virus vaccine

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

This service was performed 11 times for 11 patients

Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report

This procedure involves placing a small sensor under your skin to continuously monitor your blood sugar levels in tissue fluid. The data is interpreted and a report is generated to help manage your diabetes more effectively.

This service was performed 67 times for 42 patients

Diabetes outpatient self-management training services, group session (2 or more), per 30 minutes

This is a 30-minute group training session for diabetes patients. It helps you manage your diabetes better by teaching you about diet, exercise, medication, and monitoring blood sugar levels. You'll also learn how to handle emergencies and reduce diabetes-related complications.

This service was performed 52 times for 19 patients

Diabetes outpatient self-management training services, individual, per 30 minutes

This service involves personalized training sessions, each lasting 30 minutes, to help manage diabetes. It includes guidance on monitoring blood sugar, healthy eating, physical activity, medication usage, and dealing with daily challenges of living with diabetes.

This service was performed 845 times for 360 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 120 times for 104 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 394 times for 198 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 42 times for 37 patients

Hemoglobin a1c level

Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.

This service was performed 245 times for 129 patients

Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less

This is a procedure where a medical professional inserts a small tube into your vein to deliver medication, nutrients, or fluids directly into your bloodstream. This can be for treatment, prevention, or diagnosis. The process typically takes less than an hour.

This service was performed 45 times for 45 patients

Injection of drug or substance under skin or into muscle

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

This service was performed 26 times for 19 patients

Injection, denosumab, 1 mg

Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.

This service was performed 900 times for 11 patients

Injection, zoledronic acid, 1 mg

Zoledronic acid is a medication given via injection to strengthen bones. It's often used in patients with osteoporosis or certain types of cancer. The injection helps reduce the risk of fractures and other bone complications.

This service was performed 225 times for 45 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 26 times for 26 patients

Telephone medical discussion with physician, 11-20 minutes

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

This service was performed 46 times for 35 patients

Telephone medical discussion with physician, 21-30 minutes

This service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.

This service was performed 12 times for 12 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $38.45 for a new patient copayment and $29.87 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 94520 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

  • Average New Patient Price $153.83
  • Minimum New Patient Price $69
  • Maximum New Patient Price $202.35
  • Average New Patient Copayment $38.45
  • Minimum New Patient Copayment $17.25
  • Maximum New Patient Copayment $50.58

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

  • Average Established Patient Price $119.48
  • Minimum Established Patient Price $23.44
  • Maximum Established Patient Price $166.46
  • Average Established Patient Copayment $29.87
  • Minimum Established Patient Copayment $5.86
  • Maximum Established Patient Copayment $41.61

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

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 85.73, 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 provider also has detailed performance information the following quality measures: .

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: 85.73 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: 82.68

    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: 99

    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: 40

    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: 70.58

    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: 70.58

    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.

MIPS Quality Measures

The following performance measures were reported under the Merit-Based Incentive Payment System (MIPS) and Qualified Clinical Data Registry (QCDR) quality measures program.

Quality Measure Performance Number of Patients
Appropriate Use of DXA Scans in Women Under 65 Years Who Do Not Meet the Risk Factor Profile for Osteoporotic Fracture 5% "Inverse Quality Measure"
This is an inverse quality measure, a lower rate means the provider is rated better.
80
Breast Cancer Screening 81% 460
Cervical Cancer Screening 65% 474
Colorectal Cancer Screening 65% 822
Controlling High Blood Pressure 84% 619
Coronary Artery Disease (CAD): Beta-Blocker Therapy Prior Myocardial Infarction (MI) or Left Ventricular Systolic Dysfunction (LVEF <= 40%) 92% 25
Diabetes: Eye Exam 33% 611
Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%) 14% "Inverse Quality Measure"
This is an inverse quality measure, a lower rate means the provider is rated better.
611
Documentation of Current Medications in the Medical Record 95% 3384
e-Prescribing 99% 505
Falls: Screening for Future Fall Risk 60% 610
HIV Screening 31% 813
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan 57% 1089
Preventive Care and Screening: Screening for Depression and Follow-Up Plan 43% 893
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention 92% 694
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention 41% 41
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention 96% 694
Provide Patients Electronic Access to Their Health Information 100% 877
Statin Therapy for the Prevention and Treatment of Cardiovascular Disease 83% 797

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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 1568402931, we treat the final digit (1) 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 69. The final step is to find the difference between that total and the next multiple of ten (70 - 69 = 1).

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
5
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
8
Unchanged
Pos 5
4
Doubled → 8
Pos 6
0
Unchanged
Pos 7
2
Doubled → 4
Pos 8
9
Unchanged
Pos 9
3
Doubled → 6
Check
1
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 6 → 12 → 3 4 → 8 2 → 4 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 1 + 2 + 8 + 8 + 0 + 4 + 9 + 6 + 24 = 69

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

The next multiple of ten after 69 is 70. The difference is the calculated check digit.

70 - 69 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1568402931.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Hospitalist
2700 GRANT ST, #200
CONCORD, CA 94520
Specialist
2700 GRANT ST, SUITE 320
CONCORD, CA 94520
Internal Medicine
2700 GRANT ST, SUITE 200
CONCORD, CA 94520
Family Medicine
2700 GRANT ST, SUITE 200
CONCORD, CA 94520
Internal Medicine
2700 GRANT ST, SUITE 200
CONCORD, CA 94520
Internal Medicine
2700 GRANT ST, SUITE 200
CONCORD, CA 94520
Internal Medicine
2700 GRANT ST, SUITE 200
CONCORD, CA 94520
Family Medicine
2700 GRANT ST, SUITE 200
CONCORD, CA 94520
Family Medicine
2700 GRANT ST, SUITE 200
CONCORD, CA 94520
Family Medicine
2700 GRANT ST, SUITE 200
CONCORD, CA 94520
Internal Medicine
2700 GRANT ST, SUITE 200
CONCORD, CA 94520
Internal Medicine
2700 GRANT ST, SUITE 200
CONCORD, CA 94520
Internal Medicine
2700 GRANT ST, SUITE 200
CONCORD, CA 94520
Internal Medicine
2700 GRANT ST, SUITE 200
CONCORD, CA 94520
Family Medicine
2700 GRANT ST, SUITE 200
CONCORD, CA 94520
Hospitalist
2700 GRANT ST, SUITE 200
CONCORD, CA 94520
Family Medicine
2700 GRANT ST, SUITE 200
CONCORD, CA 94520
Pharmacist
2700 GRANT ST
CONCORD, CA 94520
Internal Medicine (Cardiovascular Disease)
2700 GRANT ST, STE 311
CONCORD, CA 94520
Otolaryngology
2700 GRANT ST, SUITE 104
CONCORD, CA 94520

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1568402931, enumerated as an "individual" on June 07, 2006.

The provider is located at 2700 GRANT ST SUITE 200 CONCORD, CA 94520 and the phone number is (925) 687-8860.

Internal Medicine with taxonomy code 207R00000X.

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