Dr. Grace Y Kwon , MD
Internal Medicine • Newark, DE
200 Hygeia Dr, Suite 2100
Newark, DE 197132049
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 June 25, 2008; this date does not establish years in practice.
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Published CMS data list 239 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:
- 99223 — Initial hospital care with moderate level of medical decision making: 78 service units.
- 99232 — Subsequent hospital care with moderate levelof medical decision making: 67 service units.
- 99233 — Subsequent hospital care with moderate levelof medical decision making: 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 all 6 records in the table · Guide: How to read Medicare Part B data
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Fewer Medicare Part B services than 75% of clinicians listed under Internal Medicine in Newark, DE (2024, 170 clinicians with data). Median for this group: 468. Middle half: 265 to 912.
Fewer Medicare Part B services than 80% of clinicians listed under Internal Medicine in Delaware (2024, 379 clinicians with data). Median for this group: 725. Middle half: 300 to 1,159.
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 373 in 2020 to 239 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
200 Hygeia Dr
Suite 2100
Newark, DE 197132049
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
160 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 $27,722 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 $21,819 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)
No Open Payments records are listed for this clinician for 2019–2025.
NPI first issued
2008
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.
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 Newark and Delaware
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 Newark, DE (2024, 170 clinicians with data). Median for this group: 468. Middle half: 265 to 912.
Fewer Medicare Part B services than 80% of clinicians listed under Internal Medicine in Delaware (2024, 379 clinicians with data). Median for this group: 725. Middle half: 300 to 1,159.
Medicare-allowed amount
A lower Medicare-allowed amount than 70% of clinicians listed under Internal Medicine in Newark, DE (2024, 170 clinicians with data). Median for this group: $52,423. Middle half: $27,092 to $85,451.
A lower Medicare-allowed amount than 75% of clinicians listed under Internal Medicine in Delaware (2024, 379 clinicians with data). Median for this group: $70,420. Middle half: $31,824 to $110,420.
Paid by Medicare
A lower Medicare payment amount than 70% of clinicians listed under Internal Medicine in Newark, DE (2024, 170 clinicians with data). Median for this group: $40,903. Middle half: $21,275 to $67,486.
A lower Medicare payment amount than 75% of clinicians listed under Internal Medicine in Delaware (2024, 379 clinicians with data). Median for this group: $54,415. Middle half: $24,740 to $87,023.
240 active clinicians are listed under Internal Medicine with a practice address in Newark, DE (601 in Delaware).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Newark
12.1% of these 240 clinicians have the CMS telehealth indicator.
80% of these 240 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 36% from 373 in 2020 to 239 in 2024.
- 2020: 373
- 2021: 248
- 2022: 261
- 2023: 118
- 2024: 239
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Medicare-allowed amount
Medicare-allowed amount decreased 39% from $45,626 in 2020 to $27,722 in 2024.
- 2020: $45,626
- 2021: $35,870
- 2022: $28,543
- 2023: $15,515
- 2024: $27,722
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Paid by Medicare
Paid by Medicare decreased 39% from $35,926 in 2020 to $21,819 in 2024.
- 2020: $35,926
- 2021: $28,505
- 2022: $22,645
- 2023: $12,308
- 2024: $21,819
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Doctors and Clinicians, 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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99223
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
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78 | 77 | $557.56 | $168.28 |
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99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
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67 | 46 | $202.46 | $76.54 |
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99233
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
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42 | 30 | $289.38 | $115.15 |
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99231
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes
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21 | 17 | $112.36 | $48.12 |
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99239
Hospital discharge day management, more than 30 minutes
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20 | 20 | $297.86 | $111.32 |
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99222
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
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11 | 11 | $381.60 | $126.81 |
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: 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.
NUCC Taxonomy Code: 208M00000X
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20121015000074
DE
1052473964
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.
Physician Assistant
Physician Assistant (Certified)
Internal Medicine
Doctor of Osteopathic Medicine (D.O.)
Physician Assistant
Physician Assistant (Certified)
Internal Medicine
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Hospitalist
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated June 25, 2008.
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 Internal Medicine Providers in Newark
- Dr. Daniel Feldman, DO, MPH
- Dr. Hafsa Syeda, MD
- Dr. Himani Divatia, DO
- Dr. Christopher Prieto, DO
- Dr. Elsie Hobeika, DO
- Dr. Shveta Singh-Patel, DO
Mailing Address
200 Hygeia Dr, Suite 2300
Newark, DE 197132049
Phone: 3026230188