Dr. John Hyunyoung Kim , DDS
Dentist • Irvine, CA
19742 Macarthur Blvd, Suite 224
Irvine, CA 926122432
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on September 28, 2010; this date does not establish years in practice.
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Published CMS data list 42 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99203 — New patient outpatient office visit: 42 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See the full table · Guide: How to read Medicare Part B data
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Fewer Medicare Part B services than 80% of clinicians listed under Dentist in California (2024, 27 clinicians with data). Median for this group: 100. Middle half: 56 to 169.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 108 in 2019 to 42 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2019–2024.
Practice Location & Contact Primary Location
19742 Macarthur Blvd
Suite 224
Irvine, CA 926122432
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Dentist: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
48 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $4,795 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $3,659 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $97.35 in 2024
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2024.
NPI first issued
2010
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Compared with the same specialty in Irvine and California
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 80% of clinicians listed under Dentist in California (2024, 27 clinicians with data). Median for this group: 100. Middle half: 56 to 169.
Too few clinicians listed under Dentist in Irvine have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A lower Medicare-allowed amount than 75% of clinicians listed under Dentist in California (2024, 27 clinicians with data). Median for this group: $11,279. Middle half: $6,071 to $25,106.
Too few clinicians listed under Dentist in Irvine have Medicare Part B data for 2024 to compare.
Paid by Medicare
A lower Medicare payment amount than 75% of clinicians listed under Dentist in California (2024, 27 clinicians with data). Median for this group: $8,431. Middle half: $4,580 to $19,374.
Too few clinicians listed under Dentist in Irvine have Medicare Part B data for 2024 to compare.
153 active clinicians are listed under Dentist with a practice address in Irvine, CA (14,738 in California).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Irvine
0% of these 153 clinicians have the CMS telehealth indicator.
0% of these 153 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 61% from 108 in 2019 to 42 in 2024.
- 2019: 108
- 2020: 42
- 2021: 67
- 2023: 55
- 2024: 42
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Medicare-allowed amount
Medicare-allowed amount decreased 90% from $45,835 in 2019 to $4,795 in 2024.
- 2019: $45,835
- 2020: $22,313
- 2021: $30,885
- 2023: $27,785
- 2024: $4,795
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Paid by Medicare
Paid by Medicare decreased 90% from $36,085 in 2019 to $3,659 in 2024.
- 2019: $36,085
- 2020: $17,825
- 2021: $24,073
- 2023: $21,526
- 2024: $3,659
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $23.12 in 2021 to $97.35 in 2024.
- 2021: $23.12
- 2022: $23.81
- 2024: $97.35
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Open Payments (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2024 (payments made January 1 – December 31, 2024): fewer than 11 records totaling $97.35.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| ZIMVIE INC. |
Food and Beverage
In-kind items and services
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TAPERED SCREW-VENT | General | $97.35 |
Source: CMS Open Payments, program year 2024, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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42 | 42 | $250.00 | $114.16 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 122300000X
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.
NUCC Taxonomy Code: 122300000X
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physical Therapist
Doctor of Physical Therapy
Internal Medicine
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Career & Practice History
NPI enumerated September 28, 2010.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Dentists in Irvine
- Dr. Ryan Lange, DMD
- Dr. Rashad Altawaty, DDS
- Kooshyar Tahmasbi Dezfuly
- Dr. Bahram Kianpour, DDS
- Dr. Louis Moon, DDS
- Mana Kafaei
Mailing Address
19742 Macarthur Blvd, Suite 224
Irvine, CA 926122432
Phone: 9497483722