DR. DENNIS Y. CHAN M. D.
NPI 1053343434
Internal Medicine - Gastroenterology in Monterey Park, CA

NPI Status: Active since July 07, 2006

Contact Information

500 N GARFIELD AVE
SUITE 107
MONTEREY PARK, CA
ZIP 91754
Phone: (626) 280-3225
Fax: (626) 280-4222

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  • Individual
  • Male
  • Years of Experience 46
  • Internal Medicine
  • Gastroenterology
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About DENNIS CHAN

This page provides the complete NPI Profile along with additional information for Dennis Chan, an internist established in Monterey Park, California with a medical specialization in Internal Medicine, focusing in gastroenterology and more than 46 years of experience. The healthcare provider is registered in the NPI registry with number 1053343434 assigned on July 2006. The practitioner's primary taxonomy code is 207RG0100X with license number A43296 (CA). The provider is registered as an individual and his NPI record was last updated 10 years ago.

NPI
1053343434
Provider Name
DR. DENNIS Y. CHAN M. D.
Gender
Male
Entity Type
Individual
Location Address
500 N GARFIELD AVE SUITE 107 MONTEREY PARK, CA 91754
Location Phone
(626) 280-3225
Location Fax
(626) 280-4222
Mailing Address
PO BOX 6427 ALHAMBRA, CA 91802
Mailing Phone
(626) 280-3225
Mailing Fax
(626) 280-4222
Medical School Name
OTHER
Graduation Year
1980
Is Sole Proprietor?
Yes
Enumeration Date
07-07-2006
Last Update Date
03-03-2015
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An internist like Dennis Chan 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.

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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

Internal Medicine Gastroenterology

Taxonomy Code
207RG0100X
Type
Allopathic & Osteopathic Physicians
License No.
A43296
License State
CA
Taxonomy Description
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal 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.

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
00A432961MEDICAID (05)CA 
A43296MEDICARE PIN (08)CA 
00A432960OTHER (01)BLUE SHIELD
E89842MEDICARE UPIN (02)CA 

Medicare Participation & PECOS Enrollment Status

Dennis Chan 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.

Dennis Chan 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: 4183611635

    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: I20101022000014

    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

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.

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

This service was performed 109 times for 108 patients

Biopsy of large bowel using a flexible endoscope

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

This service was performed 64 times for 64 patients

Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk

Colorectal cancer screening, such as a colonoscopy, is a preventive measure to detect early signs of cancer in the large intestine. For individuals not at high risk, it's typically recommended at age 50. A small, flexible tube with a camera is used to examine your colon. It's a safe, effective way to catch issues early.

This service was performed 14 times for 14 patients

Diagnostic exam of large bowel using a flexible endoscope

This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.

This service was performed 60 times for 60 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 27 times for 27 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 334 times for 259 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 257 times for 257 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

This service was performed 30 times for 30 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 32 times for 32 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $35.59 for a new patient copayment and $27.49 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 91754 ZIP code area.

New Patients Visit Costs *

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

  • Average New Patient Price $142.39
  • Minimum New Patient Price $62.96
  • Maximum New Patient Price $187.6
  • Average New Patient Copayment $35.59
  • Minimum New Patient Copayment $15.74
  • Maximum New Patient Copayment $46.9

Established Patients Visit Costs *

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

  • Average Established Patient Price $109.96
  • Minimum Established Patient Price $20.84
  • Maximum Established Patient Price $153.61
  • Average Established Patient Copayment $27.49
  • Minimum Established Patient Copayment $5.21
  • Maximum Established Patient Copayment $38.4

* 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.

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NPI Validation Check Digit Calculation


The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.

Start with the original NPI number, the last digit is the check digit and is not used in the calculation.
1053343434
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
2010364646
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 0 + 1 + 0 + 3 + 6 + 4 + 6 + 4 + 6 + 24 = 56
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit.
60 - 56 = 44

The NPI number 1053343434 is valid because the calculated check digit 4 using the Luhn validation algorithm matches the last digit of the original NPI number.

Other Providers at the Same Location


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

NPI Name / Type Taxonomy Address
1760477939 SHAN CHU MD
Individual
Internal Medicine (Pulmonary Disease)500 N GARFIELD AVE STE 204
MONTEREY PARK, CA 91754
(626) 280-4393
1093793184DR. WENDY H WU D.P.M.
Individual
Podiatrist (Foot & Ankle Surgery)500 N GARFIELD AVE SUITE 210
MONTEREY PARK, CA 91754
(626) 312-2000
1801857859DR. TSANG-HUNG CHANG M.D.
Individual
Obstetrics & Gynecology500 N GARFIELD AVE SUITE 201
MONTEREY PARK, CA 91754
(626) 572-0661
1295773836SZE-WAI NG, M.D., A PROFESSIONAL CORPORATION
Organization
Clinic/Center (Primary Care)500 N GARFIELD AVE SUITE 109
MONTEREY PARK, CA 91754
(626) 288-3288
1801815527DR. SUISUN SIMON CHAN M.D.
Individual
Internal Medicine (Gastroenterology)500 N GARFIELD AVE SUITE 308
MONTEREY PARK, CA 91754
(626) 288-8292
1356445639M Y NASIR MD INC
Organization
Family Medicine500 N GARFIELD AVE #110
MONTEREY PARK, CA 91754
(626) 288-8900
1558437517 NING LI
Individual
Acupuncturist500 N GARFIELD AVE #201
MONTEREY PARK, CA 91754
(626) 571-7115
1114086907JACK MORGAN, DPM, INC A PROFESSIONAL CORPORATION
Organization
Podiatrist (Foot & Ankle Surgery)500 N GARFIELD AVE 108
MONTEREY PARK, CA 91754
(626) 288-2760
1326105743DR. CHARLES CHIUSUNG CHAN M.D.
Individual
Obstetrics & Gynecology500 N GARFIELD AVE SUITE 310
MONTEREY PARK, CA 91754
(626) 288-8590
1356462576ALFREDO Y JOSE MD AMC
Organization
Surgery500 N GARFIELD AVE SUITE 304
MONTEREY PARK, CA 91754
(626) 288-1373
1740483601EDWARD CHEN PERINATOLOGY CORP
Organization
Obstetrics & Gynecology (Maternal & Fetal Medicine)500 N GARFIELD AVE 206
MONTEREY PARK, CA 91754
(626) 288-4218
1225220965H.Y. LUH, M.D. INC.
Organization
Internal Medicine500 N GARFIELD AVE SUITE # 106
MONTEREY PARK, CA 91754
(626) 571-5955
1770772741DRS MORGAN AND BENARD DPM PODO PEDIATRICS
Organization
Podiatrist (Foot & Ankle Surgery)500 N GARFIELD AVE 108
MONTEREY PARK, CA 91754
(626) 288-2760
1265611107WEI & WANG MDS,INC.
Organization
Internal Medicine (Nephrology)500 N GARFIELD AVE SUITE # 102
MONTEREY PARK, CA 91754
(626) 288-0488
1659674000 SZE WAI NG M.D.
Individual
Pediatrics500 N GARFIELD AVE SUITE 109
MONTEREY PARK, CA 91754
(626) 288-3288
1053660571JIN Q YANG MD INC.
Organization
Clinic/Center (Primary Care)500 N GARFIELD AVE 110
MONTEREY PARK, CA 91754
(626) 288-0091
1669475489DR. JACK MORGAN DPM
Individual
Podiatrist (Foot Surgery)500 N GARFIELD AVE STE 108
MONTEREY PARK, CA 91754
(626) 288-2760
1164769295 MARY Q TU NP
Individual
Licensed Practical Nurse500 N GARFIELD AVE SUITE 102
MONTEREY PARK, CA 91754
(626) 288-0488
1578520771 XIANG-HONG ELSIE LIN MD
Individual
Internal Medicine500 N GARFIELD AVE SUITE 110
MONTEREY PARK, CA 91754
(626) 288-0091
1326292236X ELSIE LIN MEDICAL CORPORATION
Organization
Internal Medicine500 N GARFIELD AVE SUITE 110
MONTEREY PARK, CA 91754
(626) 288-0091

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1053343434, enumerated in the NPI registry as an "individual" on July 07, 2006

The provider is located at 500 N Garfield Ave Suite 107 Monterey Park, Ca 91754 and the phone number is (626) 280-3225

The provider's speciality is Internal Medicine with taxonomy code 207RG0100X with a focus in Gastroenterology

The provider has more than 46 years of experience.

The provider might be accepting Accepts: Medicare, Medicaid and Blue Cross Blue Shield. Please consult your insurance carrier or call the provider to make sure your health plan is currently accepted.

Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary 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.

Medicare beneficiaries should expect a typical cost of $142.39 with an average copayment of $35.59 for new patient appointments. Established patients should expect a typical charge of $109.96 and an average copayment of 27.49. Please review your insurance plan or contact the provider directly to determine your specific costs.

The most common procedures or services performed by this practitioner are: Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, Biopsy of large bowel using a flexible endoscope, Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk, Diagnostic exam of large bowel using a flexible endoscope, Established patient office or other outpatient visit, 10-19 minutes, Established patient office or other outpatient visit, 20-29 minutes, New patient office or other outpatient visit, 30-44 minutes, Removal of polyps or growths of large bowel using an endoscope with mechanical snare and Telephone medical discussion with physician, 11-20 minutes.

This NPI record was last updated on July 07, 2006. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
NPI Profile data is regularly updated with the latest NPI registry information, if you would like to update or remove your NPI Profile in this website please contact us.