DR. GEMMA TOK HYON KO M.D.
NPI 1437167715
Internal Medicine in Pico Rivera, CA

Q: What is Gemma Ko's NPI number?

The NPI number for Gemma Ko is 1437167715. It was assigned to this individual provider in the NPPES registry on August 3, 2006.

Q: What is Gemma Ko's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Gemma Ko was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since August 03, 2006PECOS EnrolledAccepts Medicare Assignment

4511 ROSEMEAD BLVD, PICO RIVERA, CA 90660(562) 692-3388 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Dr. Gemma Tok Hyon Ko M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GEMMA TOK HYON KO M.D. (NPI 1437167715) is an individual internal medicine provider in Pico Rivera, California, licensed in California (G70866) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS and is a graduate of University Of Hawaii John A. Burns School Of Medicine (1990).

NPPES Registry Identity

NPI1437167715

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameDR. GEMMA TOK HYON KOCredential: M.D.

Location Address4511 ROSEMEAD BLVDPico Rivera, CA 90660-2032

Mailing AddressPo Box 1699Whittier, CA 90609-1699 · (562) 692-3388

Phone(562) 692-3388

Sole ProprietorNo

Medical School CMSUniversity Of Hawaii John A. Burns School Of MedicineGraduated 1990

Enumeration DateAugust 3, 2006

Last NPPES UpdateJuly 8, 2007

✔ NPI 1437167715 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · G70866

Definition

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.

4511 ROSEMEAD BLVD, Pico Rivera, CA 90660

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Other Identifiers 3

Medicare ID-Type UnspecifiedG70866CA

Medicare UPINE58526CA

Medicaid00G708660CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Gemma Tok Hyon Ko M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2163428475

PECOS Enrollment IDI20070108000566

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

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.

223 services48 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

113 services39 patients

Management using the results of remote vital sign monitoring per calendar month, first 20 minutes 99457

This service involves reviewing and managing your health data, which is remotely monitored and collected. Your vital signs like heart rate and blood pressure are tracked regularly throughout the month. The first 20 minutes of this data analysis per month is included in this service.

68 services13 patients

Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days 99454

This service involves using devices to remotely track body functions like heart rate or blood pressure. These devices, provided initially, record data daily or send alerts if readings are abnormal. The service is renewed every 30 days.

65 services12 patients

Telephone medical discussion with physician, 21-30 minutes 99443

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.

58 services26 patients

Collection and interpretation of physical parameters stored in computers and/or transmitted by the patient and/or caregiver to qualified health care professional, requiring 30 minutes or more, per 30 days 99091

This service involves gathering and analyzing health data from a patient, which is digitally stored and sent to a healthcare professional. This may include heart rate, blood pressure, or blood sugar levels. The process takes at least 30 minutes and is repeated every 30 days.

57 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90660 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$142.39 typical visit price

range $62.96 – $187.60

Typical copayment $35.59 (range $15.74 – $46.90)

Most-billed visit code 99204

Established Patient

$109.96 typical visit price

range $20.84 – $153.61

Typical copayment $27.49 (range $5.21 – $38.40)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Breast Cancer Screening

Percentage of women 50-74 years of age who had a mammogram to screen for breast cancer

53%99 patients3/55-star benchmark: 92%

Cervical Cancer Screening

Percentage of women 21-64 years of age who were screened for cervical cancer using either of the following criteria: - Women age 21-64 who had cervical cytology performed every 3 years - Women age 30-64 who had cervical cytology/human papillomavirus (HPV)…

27%166 patients

Depression Utilization of the PHQ-9 Tool

The percentage of patients age 18 and older with the diagnosis of major depression or dysthymia who have a completed PHQ-9 during each applicable 4 month period in which there was a qualifying visit

Patients 4MonthsOfEnd: 71% · 83 patients

Patients 4MonthsOfStart: 1% · 84 patients

52%83 patients

Diabetes: Foot Exam

The percentage of patients 18-75 years of age with diabetes (type 1 and type 2) who received a foot exam (visual inspection and sensory exam with mono filament and a pulse exam) during the measurement year

82%76 patients4/55-star benchmark: 98%

Diabetes: Medical Attention for Nephropathy

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

84%76 patients4/55-star benchmark: 99%

Documentation of Current Medications in the Medical Record

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.

94%1,720 patients4/55-star benchmark: 100%

Falls: Screening for Future Fall Risk

Percentage of patients 65 years of age and older who were screened for future fall risk during the measurement period

93%142 patients4/55-star benchmark: 99%

Pneumococcal Vaccination Status for Older Adults

Percentage of patients 65 years of age and older who have ever received a pneumococcal vaccine

94%142 patients5/55-star benchmark: 90%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

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…

89%418 patients4/55-star benchmark: 97%

Preventive Care and Screening: Influenza Immunization

Percentage of patients aged 6 months and older seen for a visit between October 1 and March 31 who received an influenza immunization OR who reported previous receipt of an influenza immunization

33%312 patients2/55-star benchmark: 88%

Preventive Care and Screening: Screening for Depression and Follow-Up Plan

Percentage of patients aged 12 years and older screened for depression on the date of the encounter using an age appropriate standardized depression screening tool AND if positive, a follow-up plan is documented on the date of the positive screen

84%305 patients4/55-star benchmark: 96%

Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention

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

Patients screenedForUse: 97% · 352 patients

Patients tobacco: 94% · 352 patients

76%46 patients4/55-star benchmark: 98%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

7 suppliers23 claims73 services$6.45 avg. paid by Medicare

Intermittent urinary catheter, with insertion supplies A4353

DME-Orthotic Devices · category DF008N

2 suppliers26 claims5,200 services$6.77 avg. paid by Medicare

Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466

DME-Other DME · category DE005N

1 supplier12 claims12 services$781.18 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 8

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DANIEL WOO MD P C

General Practice