DR. WILLIAM STEPHEN CHUNG M.D.
NPI 1831204486
Internal Medicine - Cardiovascular Disease in San Francisco, CA
NPI Status: Active since August 21, 2006
Contact Information
728 PACIFIC AVE
SUITE 507
SAN FRANCISCO, CA
ZIP 94133
Phone: (415) 986-2239
Fax: (415) 986-2237
- Individual
- Male
- Years of Experience 42
- Internal Medicine
- Cardiovascular Disease
- Accepts Medicare Approved Payment
- PECOS Enrolled
- Medicare Quality Reporting
About WILLIAM CHUNG
This page provides the complete NPI Profile along with additional information for William Chung, an internist established in San Francisco, California with a medical specialization in Internal Medicine, focusing in cardiovascular disease and more than 42 years of experience. The healthcare provider is registered in the NPI registry with number 1831204486 assigned on August 2006. The practitioner's primary taxonomy code is 207RC0000X with license number A51482 (CA). The provider is registered as an individual and his NPI record was last updated 13 years ago.
- NPI
- 1831204486
- Provider Name
- DR. WILLIAM STEPHEN CHUNG M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 728 PACIFIC AVE SUITE 507 SAN FRANCISCO, CA 94133
- Location Phone
- (415) 986-2239
- Location Fax
- (415) 986-2237
- Mailing Address
- 728 PACIFIC AVE SUITE 507 SAN FRANCISCO, CA 94133
- Mailing Phone
- (415) 986-2239
- Mailing Fax
- (415) 986-2237
- Medical School Name
- OTHER
- Graduation Year
- 1984
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 08-21-2006
- Last Update Date
- 03-15-2013
- Code Navigator
An internist like William Chung 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 Cardiovascular Disease
- Taxonomy Code
- 207RC0000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- A51482
- License State
- CA
- Taxonomy Description
- An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
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 |
|---|---|---|---|
| 00A514820 | MEDICARE ID-TYPE UNSPECIFIED (04) | ||
| F49581 | MEDICARE UPIN (02) | CA | |
| A514822 | MEDICAID (05) | CA |
Medicare Participation & PECOS Enrollment Status
William Chung 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.
William Chung 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: 8921102690
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: I20070406000161
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)
Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips (HCPCS:A4253)
4 DME suppliers used 39 Medicare Claims 78 Services Paid
DME-Medical/Surgical Supplies (DA000N)
Lancets, per box of 100 (HCPCS:A4259)
4 DME suppliers used 36 Medicare Claims 36 Services Paid
DME-Other DME (DE001N)
Continuous positive airway pressure (cpap) device (HCPCS:E0601)
1 DME suppliers used 21 Medicare Claims 21 Services Paid
Unknown
Treatment-Chemotherapy (RH012N)
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period (HCPCS:Q0512)
1 DME suppliers used 21 Medicare Claims 21 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
Established patient office or other outpatient visit, 10-19 minutes
Established patient office or other outpatient visit, 20-29 minutes
Established patient office or other outpatient visit, 30-39 minutes
Influenza vaccine, quadrivalent derived from cell cultures
Influenza vaccine, quadrivalent, 0.5 ml dosage
New patient office or other outpatient visit, 45-59 minutes
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only
Ultrasound of heart with color-depicted blood flow, rate, direction and valve function
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 78 times for 78 patientsThis 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 15 times for 15 patientsThis 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 447 times for 151 patientsThis 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 133 times for 79 patientsThe quadrivalent influenza vaccine, derived from cell cultures, is a flu shot that protects against four different flu viruses. It's made in labs using cell cultures instead of eggs, making it a good option for those with egg allergies. It's a crucial tool in preventing the flu.
This service was performed 61 times for 61 patientsThe Influenza vaccine, quadrivalent, 0.5 ml dosage, is a flu shot to protect against four strains of the flu virus. It's given as a small injection, typically in the arm, to help your body build immunity and fight off potential flu infections.
This service was performed 13 times for 13 patientsThis 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 21 times for 21 patientsA routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
This service was performed 445 times for 386 patientsThis is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.
This service was performed 41 times for 40 patientsPhysician Visit Costs
The typical physician office visit costs for Medicare beneficiaries in this area are: $38.45 for a new patient copayment and $21.22 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 94133 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 99213
- Average Established Patient Price $84.91
- Minimum Established Patient Price $23.44
- Maximum Established Patient Price $166.46
- Average Established Patient Copayment $21.22
- 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.
Quality Reporting
The provider participated in CMS Quality Payment Program. The Quality Payment Program aims to improve population health, reduce costs and improve the care received by Medicare beneficiaries. The following quality measures meet Medicare's statistical reporting standards. Not all providers report the same information, because not all providers give the same services to patients. The quality information is just a snapshot of some the care providers give to their patients. Reporting more or less information is not a reflection of quality.
| Quality Measure | Performance | Number of Patients |
|---|---|---|
| Age-Related Macular Degeneration (AMD): Counseling on Antioxidant Supplement | 36% | 25 |
| Percentage of patients aged 50 years and older with a diagnosis of age-related macular degeneration (AMD) or their caregiver(s) who were counseled within 12 months on the benefits and/or risks of the Age-Related Eye Disease Study (AREDS) formulation for preventing progression of AMD | ||
| Age-Related Macular Degeneration (AMD): Dilated Macular Examination | 24% | 25 |
| Percentage of patients aged 50 years and older with a diagnosis of age-related macular degeneration (AMD) who had a dilated macular examination performed which included documentation of the presence or absence of macular thickening or geographic atrophy or hemorrhage AND the level of macular degeneration severity during one or more office visits within 12 months | ||
| Breast Cancer Screening | 59% | 140 |
| Percentage of women 50-74 years of age who had a mammogram to screen for breast cancer | ||
| Care Plan | 64% | 510 |
| Percentage of patients aged 65 years and older who have an advance care plan or surrogate decision maker documented in the medical record that an advance care plan was discussed but the patient did not wish or was not able to name a surrogate decision maker or provide an advance care plan | ||
| Colorectal Cancer Screening | 79% | 257 |
| Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer | ||
| Coronary Artery Disease (CAD): Antiplatelet Therapy | 68% | 62 |
| Percentage of patients aged 18 years and older with a diagnosis of coronary artery disease (CAD) seen within a 12 month period who were prescribed aspirin or clopidogrel | ||
| Diabetes: Eye Exam | 48% | 64 |
| Percentage of patients 18-75 years of age with diabetes who had a retinal or dilated eye exam by an eye care professional during the measurement period or a negative retinal exam (no evidence of retinopathy) in the 12 months prior to the measurement period | ||
| Diabetes: Medical Attention for Nephropathy | 91% | 64 |
| The percentage of patients 18-75 years of age with diabetes who had a nephropathy screening test or evidence of nephropathy during the measurement period | ||
| Documentation of Current Medications in the Medical Record | 98% | 3600 |
| Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter. This list must include ALL known prescriptions, over-the-counters, herbals, and vitamin/mineral/dietary (nutritional) supplements AND must contain the medications' name, dosage, frequency and route of administration | ||
| e-Prescribing | 96% | 5513 |
| At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology. | ||
| Falls: Risk Assessment | 39% | 23 |
| Percentage of patients aged 65 years and older with a history of falls that had a risk assessment for falls completed within 12 months | ||
| Health Information Exchange | 91% | 23 |
| The MIPS eligible clinician that transitions or refers their patient to another setting of care or health care clinician (1) uses CEHRT to create a summary of care record; and (2) electronically transmits such summary to a receiving health care clinician for at least one transition of care or referral. | ||
| Ischemic Vascular Disease (IVD): Use of Aspirin or Another Antiplatelet | 59% | 86 |
| Percentage of patients 18 years of age and older who were diagnosed with acute myocardial infarction (AMI), coronary artery bypass graft (CABG) or percutaneous coronary interventions (PCI) in the 12 months prior to the measurement period, or who had an active diagnosis of ischemic vascular disease (IVD) during the measurement period, and who had documentation of use of aspirin or another antiplatelet during the measurement period | ||
| Pain Assessment and Follow-Up | 13% | 3594 |
| Percentage of visits for patients aged 18 years and older with documentation of a pain assessment using a standardized tool(s) on each visit AND documentation of a follow-up plan when pain is present | ||
| Patient-Specific Education | 19% | 671 |
| The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician. | ||
| Pneumococcal Vaccination Status for Older Adults | 58% | 510 |
| Percentage of patients 65 years of age and older who have ever received a pneumococcal vaccine | ||
| Population empanelment | Yes | N/A |
| Empanel (assign responsibility for) the total population, linking each patient to a MIPS eligible clinician or group or care team. Empanelment is a series of processes that assign each active patient to a MIPS eligible clinician or group and/or care team, confirm assignment with patients and clinicians, and use the resultant patient panels as a foundation for individual patient and population health management. Empanelment identifies the patients and population for whom the MIPS eligible clinician or group and/or care team is responsible and is the foundation for the relationship continuity between patient and MIPS eligible clinician or group /care team that is at the heart of comprehensive primary care. Effective empanelment requires identification of the “active population” of the practice: those patients who identify and use your practice as a source for primary care. There are many ways to define “active patients” operationally, but generally, the definition of “active patients” includes patients who have sought care within the last 24 to 36 months, allowing inclusion of younger patients who have minimal acute or preventive health care. | ||
| Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan | 73% | 662 |
| Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous twelve months of the current encounter Normal Parameters: Age 18 years and older BMI >= 18.5 and < 25 kg/m2 | ||
| Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention | 56% | 48 |
| Percentage of patients aged 18 years and older who were screened for tobacco use one or more times within 24 months AND who received tobacco cessation intervention if identified as a tobacco user | ||
| Preventive Care and Screening: Unhealthy Alcohol Use: Screening & Brief Counseling | 16% | 611 |
| Percentage of patients aged 18 years and older who were screened for unhealthy alcohol use using a systematic screening method at least once within the last 24 months AND who received brief counseling if identified as an unhealthy alcohol user | ||
| Primary Open-Angle Glaucoma (POAG): Optic Nerve Evaluation | 56% | 48 |
| Percentage of patients aged 18 years and older with a diagnosis of primary open-angle glaucoma (POAG) who have an optic nerve head evaluation during one or more office visits within 12 months | ||
| Provide Patient Access | 92% | 671 |
| At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold certain information. | ||
| Rheumatoid Arthritis (RA): Functional Status Assessment | 75% | 24 |
| Percentage of patients aged 18 years and older with a diagnosis of rheumatoid arthritis (RA) for whom a functional status assessment was performed at least once within 12 months | ||
| Screening for Osteoporosis for Women Aged 65-85 Years of Age | 8% | 180 |
| Percentage of female patients aged 65-85 years of age who ever had a central dual-energy X-ray absorptiometry (DXA) to check for osteoporosis | ||
| Security Risk Analysis | Yes | N/A |
| Conduct or review a security risk analysis in accordance with the requirements in 45 CFR 164.308(a)(1), including addressing the security (to include encryption) of ePHI data created or maintained by certified EHR technology in accordance with requirements in 45 CFR164.312(a)(2)(iv) and 45 CFR 164.306(d)(3), and implement security updates as necessary and correct identified security deficiencies as part of the MIPS eligible clinician's risk management process. | ||
| Specialized Registry Reporting | Yes | N/A |
| The MIPS eligible clinician is in active engagement to submit data to specialized registry. To earn a 5 % bonus in the promoting interoperability performance category score for submitting to one or more public health or clinical data registries also attest to PI_TRANS_PHCDRR_3_MULTI. | ||
| Tobacco use | Yes | N/A |
| Tobacco use: Regular engagement of MIPS eligible clinicians or groups in integrated prevention and treatment interventions, including tobacco use screening and cessation interventions (refer to NQF #0028) for patients with co-occurring conditions of behavioral or mental health and at risk factors for tobacco dependence. | ||
| Urinary Incontinence: Assessment of Presence or Absence of Urinary Incontinence in Women Aged 65 Years and Older | 57% | 303 |
| Percentage of female patients aged 65 years and older who were assessed for the presence or absence of urinary incontinence within 12 months | ||
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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 1831204486, 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 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.
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 64 is 70. 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 94133
SAN FRANCISCO, CA 94133
SAN FRANCISCO, CA 94133
SAN FRANCISCO, CA 94133
SAN FRANCISCO, CA 94133
SAN FRANCISCO, CA 94133
SAN FRANCISCO, CA 94133
SAN FRANCISCO, CA 94133
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1831204486, enumerated as an "individual" on August 21, 2006.
The provider is located at 728 PACIFIC AVE SUITE 507 SAN FRANCISCO, CA 94133 and the phone number is (415) 986-2239.
Internal Medicine with taxonomy code 207RC0000X and a focus in Cardiovascular Disease.
The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.
