Dr. Charles C. Kwak, MD
- Medicare services, 2024
- 449
- Medicare patients, 2024
- 169
- Part D claims, 2024
- 1,844
- Hospital affiliations
- 1
- Industry payments
- $5,879
- Practice address
- 460 W 34th St, New York, NY 10001
- Practice phone
- Call (212) 273-6272
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Premier Healthcare, Inc.
New York, New York
Find Dr. Kwak's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Charles C. Kwak is a dermatologist in New York, New York
Dr. Kwak practices at Premier Healthcare, Inc. in New York, New York.
Dr. Kwak's NPI, 1548270218, was assigned on August 8, 2006. Dr. Kwak graduated from SUNY Upstate Medical University in 1998. Dr. Kwak holds New York license 218069.
- NPI
- 1548270218NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3173621349
- NPI enumeration date
- August 8, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (212) 273-6272
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Charles C. Kwak practices at Premier Healthcare, Inc. in New York, New York
Dr. Kwak's primary practice is Premier Healthcare, Inc., at 460 W 34th St, New York, NY 10001 in New York County. The practice phone is (212) 273-6272.
- Premier Healthcare, Inc.460 W 34th St, New York, NY 10001 · New York CountyPhone(212) 273-6272
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Charles C. Kwak is affiliated with 4 sites of care and 2 medical groups
Dr. Kwak's primary practice is Premier Healthcare, Inc. in New York, New York. Dr. Kwak is also affiliated with The Mount Sinai Hospital. The medical group on file is Premier Healthcare Midtown West Practice. Dmand AI also links Dr. Kwak to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Charles C. Kwak's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kwak practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Premier Healthcare, Inc. | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Charles C. Kwak is one of 1,038 dermatologists in New York
Dermatology is Dr. Kwak's primary specialty in the NPI Registry, under taxonomy code 207N00000X. Dr. Kwak is licensed in New York.
Specialties and state licenses
- Dermatology, New YorkPrimary
Dermatologists near Dr. Kwak
Counts of dermatologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Charles C. Kwak billed Medicare for 449 services in 2024
CMS data shows 449 Medicare services from Dr. Kwak across 7 procedure codes in 2024, for 169 Medicare patients. Medicare paid $33,616 for them. Every service was in an office.
Dr. Kwak's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3682024: 41212%
- Surgery
- 2023: 262024: 3742%
Dr. Kwak compared with the New York median for dermatologists, 2024
- Dr. Kwak
- New York median
- Medicare services
- 449vs 1,01656% below
- Medicare patients
- 169vs 32448% below
- Part D claims
- 1,699vs 3345.1 times
Medians across 1,022 dermatologists in New York with Dmand AI profiles that report each measure.
Dr. Kwak's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Kwak and other dermatologists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Charles C. Kwak treated 169 Medicare patients in 2024, average age 62
CMS counts 169 Medicare patients who saw Dr. Kwak in 2024. The largest group is under 65, with 77 patients. 63% of them have high cholesterol, and 54% have high blood pressure. 73% are also on Medicaid. Their average risk score is 1.05, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Kwak's median patient age at 54, with 45% women.
Dr. Kwak's Medicare patients by age, 2024
Dr. Kwak's Medicare patients by sex, 2024
- Women7343%
- Men9657%
Chronic conditions among Dr. Kwak's Medicare patients, 2024
- High cholesterol63%
- High blood pressure54%
- Anxiety34%
- Diabetes27%
- Arthritis24%
- Mood disorders24%
- ADHD and conduct disorders18%
- Depression18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Kwak's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women45%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Charles C. Kwak wrote 1,844 Medicare Part D claims in 2024
In 2024, Dr. Kwak wrote 1,844 Medicare Part D claims for 458 patients. 93% of them were for generic drugs. CMS names the drug for 1,699 of them, across 22 drugs with 11 or more claims each, at $107,125 in total drug cost. In 2023, CMS named 1,373 claims across 21 drugs.
Dr. Kwak's Part D claims by kind of drug, 2024
- Generic1,711 claims93%
- Brand-name133 claims7%
Dr. Kwak's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Kwak's Part D claims, 2024
- Antibiotics2%37 of 1,844 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,3732024: 1,69924%
Drugs named by CMS: 22 in 2024, 21 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Charles C. Kwak ranks in the 73rd percentile for removal of skin lesions in Medicare
Dr. Kwak accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 69 procedures of removal of skin lesions by Dr. Kwak, more than 73% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Kwak ranks in Medicare procedure volume
- Removal of skin lesions
- 73rd percentile69 procedures
- Skin biopsy
- 65th percentile27 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Charles C. Kwak received $5,879 in industry payments from 2016 to 2025
CMS Open Payments shows 246 general payments to Dr. Kwak from 22 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $1,010.
General payments to Dr. Kwak by program year, 2016 to 2025
General payments to Dr. Kwak by kind, 2016 to 2025
- Food and beverage$5,859100%
- Education$190%
Companies that paid Dr. Kwak the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Charles C. Kwak graduated from SUNY Upstate Medical University
Dr. Kwak graduated from SUNY Upstate Medical University in 1998.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Charles C. Kwak's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Charles C. Kwak
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Charles C. Kwak's NPI number?
Dr. Charles C. Kwak's NPI number is 1548270218. It was assigned on August 8, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Charles C. Kwak?
Dr. Charles C. Kwak is a dermatologist in New York, New York. The primary specialty in the NPI Registry is Dermatology Physician (taxonomy code 207N00000X).
Where does Dr. Charles C. Kwak practice?
Dr. Kwak practices at 460 W 34th St, New York, NY 10001. Dr. Kwak's primary practice is Premier Healthcare, Inc. in New York, New York. Dmand AI also links Dr. Kwak to 2 group practices and clinics and 1 medical group.
What is Dr. Charles C. Kwak's office phone number?
The practice phone on file for Dr. Kwak is (212) 273-6272.
What is Dr. Charles C. Kwak's medical license number?
Dr. Kwak holds New York license 218069.
Which hospitals is Dr. Charles C. Kwak affiliated with?
Dr. Kwak is affiliated with The Mount Sinai Hospital.
What medical group is Dr. Charles C. Kwak part of?
Dr. Kwak is linked to Premier Healthcare Midtown West Practice. Dmand AI links Dr. Kwak to 1 more medical group.
Does Dr. Charles C. Kwak accept Medicare?
Yes. CMS data shows Dr. Kwak billed Medicare for 449 services in 2024, and Dr. Kwak accepts Medicare assignment.
How many Medicare patients does Dr. Charles C. Kwak see?
CMS counts 169 Medicare patients who saw Dr. Kwak in 2024, with an average age of 62.
What services does Dr. Charles C. Kwak bill to Medicare?
In 2024, Dr. Kwak's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99212) and office visit, new patient (99202).
Show 4 more questionsShow fewer questions
Where did Dr. Charles C. Kwak go to medical school?
Dr. Kwak graduated from SUNY Upstate Medical University in 1998.
What drugs does Dr. Charles C. Kwak prescribe most?
In 2024 Medicare Part D data, Dr. Kwak's most prescribed drugs by claims were Ketoconazole, Ciclopirox and Triamcinolone Acetonide.
Has Dr. Charles C. Kwak received payments from drug or device companies?
CMS Open Payments shows $5,879 in general payments to Dr. Kwak from 22 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Charles C. Kwak been practicing?
Dr. Kwak graduated from medical school in 1998, 28 years ago.
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