DR. C GALEN CHOY M.D.
NPI 1790799393
Internal Medicine - Hematology & Oncology in Honolulu, HI


Quality Rating: 83.28 out of 100 score

NPI Status: Active since July 28, 2006

Contact Information

888 S KING ST
HONOLULU, HI
ZIP 96813
Phone: (808) 522-4000
Fax: (808) 522-4334

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  • Individual
  • Male
  • Years of Experience 40
  • Internal Medicine
  • Hematology & Oncology
  • Accepts Insurance
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About C CHOY

This page provides the complete NPI Profile along with additional information for C Choy, an internist established in Honolulu, Hawaii with a medical specialization in Internal Medicine, focusing in hematology & oncology and more than 40 years of experience. He graduated from Saint Louis University School Of Medicine in 1986. The healthcare provider is registered in the NPI registry with number 1790799393 assigned on July 2006. The practitioner's primary taxonomy code is 207RH0003X with license number MD-6329 (HI). The provider is registered as an individual and his NPI record was last updated 13 years ago.

NPI
1790799393
Provider Name
DR. C GALEN CHOY M.D.
Gender
Male
Entity Type
Individual
Location Address
888 S KING ST HONOLULU, HI 96813
Location Phone
(808) 522-4000
Location Fax
(808) 522-4334
Mailing Address
888 S KING ST DEPARTMENT OF ONCOLOGY HONOLULU, HI 96813
Mailing Phone
(808) 522-4000
Mailing Fax
(808) 522-4334
Medical School Name
SAINT LOUIS UNIVERSITY SCHOOL OF MEDICINE
Graduation Year
1986
Is Sole Proprietor?
No
Enumeration Date
07-28-2006
Last Update Date
03-16-2012
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An internist like C Choy 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 Hematology & Oncology

Taxonomy Code
207RH0003X
Type
Allopathic & Osteopathic Physicians
License No.
MD-6329
License State
HI
Taxonomy Description
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

  • HMSA Bronze PPO I - PPO
  • HMSA Bronze PPO II HSA - PPO
  • HMSA Catastrophic Plan - PPO
  • HMSA Gold PPO I - PPO
  • HMSA Gold PPO II - PPO
  • HMSA Platinum PPO - PPO
  • HMSA Silver PPO - PPO

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
G44379MEDICARE UPIN (02)HI 

Medicare Participation & PECOS Enrollment Status

C Choy 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.

C Choy 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: 4385648898

    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: I20060914000003

    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.

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 353 times for 221 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 397 times for 172 patients

Follow-up hospital inpatient care per day, typically 25 minutes

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

This service was performed 28 times for 14 patients

Initial hospital inpatient care per day, typically 50 minutes

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

This service was performed 17 times for 17 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 32 times for 32 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $45.01 for a new patient copayment and $26.41 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 96813 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99205

  • Average New Patient Price $180.05
  • Minimum New Patient Price $60.53
  • Maximum New Patient Price $180.05
  • Average New Patient Copayment $45.01
  • Minimum New Patient Copayment $15.13
  • Maximum New Patient Copayment $45.01

Established Patients Visit Costs *

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

  • Average Established Patient Price $105.65
  • Minimum Established Patient Price $20.09
  • Maximum Established Patient Price $147.56
  • Average Established Patient Copayment $26.41
  • Minimum Established Patient Copayment $5.02
  • Maximum Established Patient Copayment $36.89

* 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 83.28, 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: 83.28 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: 79.58

    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: 100

    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: 64.69

    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: 64.69

    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.

Find Provider Hospital Affiliations - Privileges

Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.

Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. C Choy is affiliated with the following medical facilities:

Hospital Name Address Phone Hospital Type Overall Rating
THE QUEENS MEDICAL CENTER1301 PUNCHBOWL ST
HONOLULU, HI 96813
(808) 538-9011Acute Care Hospitals
STRAUB CLINIC AND HOSPITAL888 S KING STREET
HONOLULU, HI 96813
(808) 522-4000Acute Care Hospitals
PALI MOMI MEDICAL CENTER98-1079 MOANALUA ROAD
AIEA, HI 96701
(808) 486-6000Acute Care Hospitals

Reviews for DR. C GALEN CHOY M.D.

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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.
1790799393
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
2718014918318
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 7 + 1 + 8 + 0 + 1 + 4 + 9 + 1 + 8 + 3 + 1 + 8 + 24 = 77
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit.
80 - 77 = 33

The NPI number 1790799393 is valid because the calculated check digit 3 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
1629058987DR. JONATHAN CHEONG GOCHU M.D.
Individual
Internal Medicine (Gastroenterology)888 S KING ST
HONOLULU, HI 96813
(808) 522-4000
1336198530MR. MICHAEL STETTNER PA
Individual
Physician Assistant (Medical)888 S KING ST
HONOLULU, HI 96813
(808) 522-4000
1083655153 CHRISTOPHER G APOSTOLIDES PA
Individual
Physician Assistant888 S KING ST
HONOLULU, HI 96813
(240) 476-9324
1942244900 TODD A MILLER M.D.
Individual
Urology888 S KING ST ATTN: MEDICAL STAFF - STRAUB CLINIC AND HOPSITAL
HONOLULU, HI 96813
(808) 522-4301
1821024985DR. MONTE F. ELIAS M.D.
Individual
Emergency Medicine888 S KING ST STRAUB CLINIC AND HOSPITAL
HONOLULU, HI 96813
(808) 522-4000
1417961038DR. REUBEN C. GUERRERO M.D.
Individual
Internal Medicine (Medical Oncology)888 S KING ST
HONOLULU, HI 96813
(808) 522-4333
1821002460DR. RANDAL J. LIU M.D.
Individual
Internal Medicine888 S KING ST
HONOLULU, HI 96813
(808) 522-4333
1851302673 LESLEE ANN M STEVENSON M.D.
Individual
Internal Medicine888 S KING ST
HONOLULU, HI 96813
(808) 522-4000
1184635831 MELANIE KIM MD
Individual
Hospitalist888 S KING ST
HONOLULU, HI 96813
(808) 522-4000
1861500308DR. SADA OKUMURA M.D.
Individual
Psychiatry & Neurology (Neurology with Special Qualifications in Child Neurology)888 S KING ST
HONOLULU, HI 96813
(808) 522-4000
1003924580DR. BEAU K. NAKAMOTO M.D.
Individual
Psychiatry & Neurology (Neurology)888 S KING ST
HONOLULU, HI 96813
(808) 522-4000
1114035607DR. ALBERTO S. SANTOS-OCAMPO M.D.
Individual
Internal Medicine (Rheumatology)888 S KING ST
HONOLULU, HI 96813
(808) 522-4000
1386752889DR. JEN-CHENG ROY CHEN M.D.
Individual
Internal Medicine (Cardiovascular Disease)888 S KING ST
HONOLULU, HI 96813
(808) 522-4000
1235249327DR. AILEEN M. FELDMAN O.D.
Individual
Optometrist888 S KING ST
HONOLULU, HI 96813
(808) 522-4430
1396855482DR. STEFAN E. KARAS M.D.
Individual
Ophthalmology888 S KING ST
HONOLULU, HI 96813
(808) 522-4000
1699885954DR. LAWRENCE JOHN LOCKETT MD
Individual
Pathology (Anatomic Pathology & Clinical Pathology)888 S KING ST
HONOLULU, HI 96813
(808) 522-3830
1760592729DR. ROBERT W. SCHULZ M.D.
Individual
Surgery (Plastic and Reconstructive Surgery)888 S KING ST
HONOLULU, HI 96813
(808) 522-4000
1427153634DR. MARK S. GERBER M.D.
Individual
Neurological Surgery888 S KING ST
HONOLULU, HI 96813
(808) 522-4476
1548365653DR. KENNETH SHAO-SUNG LEE O.D.
Individual
Optometrist888 S KING ST
HONOLULU, HI 96813
(808) 522-4430
1710082813DR. JOHN SCOTT KORTVELESY M.D.
Individual
Ophthalmology888 S KING ST
HONOLULU, HI 96813
(808) 522-4430

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1790799393, enumerated in the NPI registry as an "individual" on July 28, 2006

The provider is located at 888 S King St Honolulu, Hi 96813 and the phone number is (808) 522-4000

The provider's speciality is Internal Medicine with taxonomy code 207RH0003X with a focus in Hematology & Oncology

The provider has more than 40 years of experience. He graduated from Saint Louis University School Of Medicine in 1986.

The provider might be accepting Accepts: HMSA, Medicare and Medicaid. 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.

The provider has an overall high rating in the following quality measures: uses technology to exchange and make use of healthcare information.

Medicare beneficiaries should expect a typical cost of $180.05 with an average copayment of $45.01 for new patient appointments. Established patients should expect a typical charge of $105.65 and an average copayment of 26.41. 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: Established patient office or other outpatient visit, 20-29 minutes, Established patient office or other outpatient visit, 30-39 minutes, Follow-up hospital inpatient care per day, typically 25 minutes, Initial hospital inpatient care per day, typically 50 minutes and New patient office or other outpatient visit, 45-59 minutes.

The practitioner is affiliated to the following hospital(s): THE QUEENS MEDICAL CENTER, STRAUB CLINIC AND HOSPITAL and PALI MOMI MEDICAL CENTER. Hospital affiliations are identified through self-reporting data and service claims based on the place of service.

This NPI record was last updated on July 28, 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.