Dr. Peter B. Kwon , MD
Internal Medicine • Placentia, CA
1275 N Rose Dr, Suite 120
Placentia, CA 928703941
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 July 10, 2006; this date does not establish years in practice.
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Published CMS data list 167 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:
- 99214 — Established patient outpatient office visit: 79 service units.
- Q3014 — Telehealth originating site facility fee: 71 service units.
- 99213 — Established patient outpatient office visit: 17 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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Published CMS data list 62 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Losartan Potassium — 22 prescription fills, including refills.
- Carvedilol — 14 prescription fills, including refills.
- Metformin Hcl — 13 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 4 records in the table · Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 75% of clinicians listed under Internal Medicine in California (2024, 8,014 clinicians with data). Median for this group: 546. Middle half: 197 to 1,236.
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 239 in 2020 to 167 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
1275 N Rose Dr
Suite 120
Placentia, CA 928703941
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
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
31 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 $14,643 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 $11,155 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.
30-day fills
137 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$411 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019–2025.
NPI first issued
2006
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, CMS release of October 2, 2026; 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, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Dr. Kwon has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Kwon as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Placentia and California
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 75% of clinicians listed under Internal Medicine in California (2024, 8,014 clinicians with data). Median for this group: 546. Middle half: 197 to 1,236.
Too few clinicians listed under Internal Medicine in Placentia have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A lower Medicare-allowed amount than 75% of clinicians listed under Internal Medicine in California (2024, 8,014 clinicians with data). Median for this group: $57,258. Middle half: $20,378 to $125,504.
Too few clinicians listed under Internal Medicine in Placentia have Medicare Part B data for 2024 to compare.
Paid by Medicare
A lower Medicare payment amount than 75% of clinicians listed under Internal Medicine in California (2024, 8,014 clinicians with data). Median for this group: $43,360. Middle half: $14,871 to $95,733.
Too few clinicians listed under Internal Medicine in Placentia have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
Fewer Part D prescriptions than 80% of clinicians listed under Internal Medicine in California (2024, 10,856 clinicians with data). Median for this group: 1,234. Middle half: 145 to 4,216.
Too few clinicians listed under Internal Medicine in Placentia have Medicare Part D data for 2024 to compare.
Part D drug cost
A lower Part D drug cost than 90% of clinicians listed under Internal Medicine in California (2024, 10,856 clinicians with data). Median for this group: $86,595. Middle half: $7,293 to $305,458.
Too few clinicians listed under Internal Medicine in Placentia have Medicare Part D data for 2024 to compare.
7 active clinicians are listed under Internal Medicine with a practice address in Placentia, CA (17,897 in California).
Addresses are self-reported to NPPES and may be out of date.
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 30% from 239 in 2020 to 167 in 2024.
- 2020: 239
- 2021: 447
- 2022: 329
- 2023: 314
- 2024: 167
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Medicare-allowed amount
Medicare-allowed amount decreased 34% from $22,189 in 2020 to $14,643 in 2024.
- 2020: $22,189
- 2021: $54,032
- 2022: $40,755
- 2023: $32,678
- 2024: $14,643
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Paid by Medicare
Paid by Medicare decreased 33% from $16,665 in 2020 to $11,155 in 2024.
- 2020: $16,665
- 2021: $42,082
- 2022: $31,945
- 2023: $25,823
- 2024: $11,155
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 89% from 581 in 2020 to 62 in 2024.
- 2020: 581
- 2021: 398
- 2022: 227
- 2023: 114
- 2024: 62
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30-day fills
30-day fills decreased 89% from 1,302 in 2020 to 137 in 2024.
- 2020: 1,302
- 2021: 987
- 2022: 593
- 2023: 270
- 2024: 137
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Part D drug cost
Part D drug cost decreased 100% from $97,380 in 2020 to $411 in 2024.
- 2020: $97,380
- 2021: $90,687
- 2022: $4,621
- 2023: $2,718
- 2024: $411
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
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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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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79 | 29 | $201.00 | $137.65 |
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Q3014
Telehealth originating site facility fee
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71 | 30 | $52.13 | $29.49 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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17 | 15 | $151.00 | $98.55 |
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.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Losartan Potassium | Losartan Potassium | 22 | 1,590 | $84.24 | — |
| Carvedilol | Carvedilol | 14 | 720 | $17.00 | — |
| Metformin Hcl | Metformin Hcl | 13 | 810 | $165.06 | — |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 13 | 990 | $144.23 | — |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207R00000X
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.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20100512000406
CA
9830227883
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Specialist
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Ophthalmology
Doctor of Medicine (M.D.)
Podiatrist
Doctor of Podiatric Medicine
Internal Medicine - Infectious Disease
Doctor of Medicine (M.D.)
Internal Medicine - Rheumatology
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated July 10, 2006.
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 November 2026.
NPI Administrative Meta
Other Internal Medicine Providers in Placentia
- Sarah Hood, PA-C
- Dr. Shahla Sadighian, MD
- Dr. Sarah Apollo, DO
- Dr. Ali Houshyar, MD
- Dr. Bhavesh Jansari, MD
- Dr. Jason Kurtz, DO
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Directory navigation, in NPI number order.
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Mailing Address
Po Box 27432
Anaheim, CA 928090114
Phone: 7149615423