Keith Yu Fai Ko , PA
Physician Assistant β’ Brooklyn, NY
450 Clarkson Ave
Brooklyn, NY 112032012
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 1, 2022; this date does not establish years in practice.
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Published CMS data list 1,699 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Triamcinolone Acetonide β 251 prescription fills, including refills.
- Mupirocin β 241 prescription fills, including refills.
- Ketoconazole β 197 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 29 records in the table Β· Guide: How to read Medicare Part D prescriber data
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More Part D prescriptions than 85% of clinicians listed under Physician Assistant in Brooklyn, NY (2024, 502 clinicians with data). Median for this group: 139. Middle half: 42 to 504.
More Part D prescriptions than 85% of clinicians listed under Physician Assistant in New York (2024, 6,800 clinicians with data). Median for this group: 172. Middle half: 46 to 640.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 1,650 in 2023 to 1,699 in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2023β2024.
Practice Location & Contact Primary Location
450 Clarkson Ave
Brooklyn, NY 112032012
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Advanced Dermatology Pc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2022
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
2,617 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
$584,204 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 β by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $2,412.93 across 123 records.
By nature of payment
- Food and Beverage: $2,327.93 across 122 records.
- Education: $85.00 across 1 record.
Reporting-company totals (3 largest of 20)
- ABBVIE INC.: $342.67 across 13 records.
- Amgen Inc.: $265.67 across 8 records.
- Arcutis Biotherapeutics, Inc.: $260.38 across 21 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
4 years (graduated 2022)
CMS Doctors and Clinicians data list 2022 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2022
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.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
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, βDoes your provider accept Medicare as full payment?β
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)
Keith Ko 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 Keith Ko 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 Brooklyn and New York
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
More Part D prescriptions than 85% of clinicians listed under Physician Assistant in Brooklyn, NY (2024, 502 clinicians with data). Median for this group: 139. Middle half: 42 to 504.
More Part D prescriptions than 85% of clinicians listed under Physician Assistant in New York (2024, 6,800 clinicians with data). Median for this group: 172. Middle half: 46 to 640.
Part D drug cost
A higher Part D drug cost than 90% of clinicians listed under Physician Assistant in Brooklyn, NY (2024, 502 clinicians with data). Median for this group: $2,278. Middle half: $287 to $44,938.
A higher Part D drug cost than 90% of clinicians listed under Physician Assistant in New York (2024, 6,800 clinicians with data). Median for this group: $2,860. Middle half: $381 to $63,975.
1,279 active clinicians are listed under Physician Assistant with a practice address in Brooklyn, NY (15,558 in New York).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Brooklyn
5.6% of these 1,279 clinicians have the CMS telehealth indicator.
39.2% of these 1,279 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 D prescriptions
Medicare Part D prescriptions stayed about the same: 1,650 in 2023 and 1,699 in 2024.
- 2023: 1,650
- 2024: 1,699
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30-day fills
30-day fills stayed about the same: 2,391 in 2023 and 2,617 in 2024.
- 2023: 2,391
- 2024: 2,617
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Part D drug cost
Part D drug cost increased 19% from $491,530 in 2023 to $584,204 in 2024.
- 2023: $491,530
- 2024: $584,204
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Industry payments (Open Payments)
Industry payments (Open Payments) increased 54% from $1,568.37 in 2023 to $2,412.93 in 2025.
- 2023: $1,568.37
- 2024: $1,967.94
- 2025: $2,412.93
Sources: CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· 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 2025 (payments made January 1 β December 31, 2025): 123 records totaling $2,412.93.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
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DUPIXENT | General | $143.86 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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OTEZLA | General | $126.99 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
β | General | $124.99 |
| Bristol Myers Squibb Company |
Food and Beverage
Cash or cash equivalent
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Sotyktu | General | $119.24 |
| Sanofi and Genzyme US Companies |
Education
In-kind items and services
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DUPIXENT | General | $85.00 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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SKYRIZI | General | $36.27 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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β | General | $33.35 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
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TREMFYA | General | $31.94 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
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TREMFYA | General | $30.74 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
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TREMFYA | General | $29.42 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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CREON | General | $28.44 |
| Ardelyx, Inc. |
Food and Beverage
In-kind items and services
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IBSRELA | General | $28.09 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
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TREMFYA | General | $26.55 |
| UCB, Inc. |
Food and Beverage
In-kind items and services
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Bimzelx | General | $26.47 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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SKYRIZI | General | $26.42 |
| Takeda Pharmaceuticals U.S.A., Inc. |
Food and Beverage
In-kind items and services
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ENTYVIO | General | $25.49 |
| Incyte Corporation |
Food and Beverage
Cash or cash equivalent
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OPZELURA | General | $25.29 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
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CIBINQO | General | $25.06 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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SKYRIZI | General | $24.60 |
| Galderma Laboratories, L.P. |
Food and Beverage
In-kind items and services
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β | General | $24.58 |
| Organon LLC |
Food and Beverage
In-kind items and services
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VTAMA | General | $24.53 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
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DUPIXENT | General | $24.22 |
| Galderma Laboratories, L.P. |
Food and Beverage
In-kind items and services
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β | General | $23.75 |
| Galderma Laboratories, L.P. |
Food and Beverage
In-kind items and services
|
β | General | $23.73 |
| Incyte Corporation |
Food and Beverage
Cash or cash equivalent
|
OPZELURA | General | $23.40 |
(top 25 shown)
Source: CMS Open Payments, program year 2025, released June 30, 2026.
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 |
|---|---|---|---|---|---|
| Triamcinolone Acetonide | Triamcinolone Acetonide | 251 | 10,338 | $49,381.50 | 136 |
| Mupirocin | Mupirocin | 241 | 5,355 | $1,626.66 | 124 |
| Ketoconazole | Ketoconazole | 197 | 8,560 | $83,196.44 | 102 |
| Mometasone Furoate | Mometasone Furoate | 132 | 4,251 | $3,182.94 | 60 |
| Mupirocin | Mupirocin Calcium | 109 | 7,110 | $38,855.76 | 72 |
| Ciclopirox | Ciclopirox | 87 | 5,010 | $4,822.29 | 53 |
| Clindamycin Phosphate | Clindamycin Phosphate | 64 | 3,425 | $36,816.78 | 39 |
| Hydrocortisone | Hydrocortisone | 59 | 1,757 | $474.21 | 34 |
| Hydrocortisone Butyrate | Hydrocortisone Butyrate | 53 | 3,780 | $27,517.37 | 37 |
| Ertaczo | Sertaconazole Nitrate | 53 | 3,450 | $101,303.42 | 32 |
| Tavaborole | Tavaborole | 41 | 3,570 | $17,814.36 | 20 |
| Halobetasol Propionate | Halobetasol Propionate | 39 | 1,218 | $2,506.21 | 22 |
| Tretinoin | Tretinoin | 39 | 2,000 | $5,439.85 | 24 |
| Clobetasol Propionate | Clobetasol Propionate | 36 | 1,377 | $4,298.10 | 13 |
| Doxycycline Hyclate | Doxycycline Hyclate | 34 | 848 | $6,999.82 | 31 |
| Diflorasone Diacetate | Diflorasone Diacetate | 33 | 2,610 | $45,513.91 | 18 |
| Ammonium Lactate | Ammonium Lactate | 31 | 1,590 | $1,294.17 | 18 |
| Calcipotriene | Calcipotriene | 19 | 715 | $3,315.21 | β |
| Hydroxyzine Hcl | Hydroxyzine Hcl | 19 | 690 | $124.25 | β |
| Betamethasone Diprop Augmented | Betamethasone/Propylene Glyc | 19 | 585 | $1,155.26 | β |
| Dupixent Pen | Dupilumab | 19 | 588 | $76,772.70 | β |
| Ciclopirox | Ciclopirox Olamine | 18 | 580 | $612.02 | 13 |
| Crotan | Crotamiton | 18 | 1,440 | $43,803.10 | 13 |
| Fluconazole | Fluconazole | 17 | 622 | $84.29 | β |
| Tacrolimus | Tacrolimus | 17 | 990 | $6,085.72 | β |
(top 25 shown)
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
Self-certified to NPPES: 2025-05-30NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20250819004323
NY
3678072295
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Advanced Dermatology Pc
4 Technology Dr, East Setauket, NY 117334068
Phone: 6316893188
Advanced Dermatology Pc
142 Joralemon St, Brooklyn, NY 112014709
Phone: 7182370404
Advanced Dermatology Pc
1660 E 14th St, Brooklyn, NY 112291170
Phone: 7183760500
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Student in an Organized Health Care Education/Training Program
Student in an Organized Health Care Education/Training Program
Doctor of Osteopathic Medicine (D.O.)
Physician Assistant
Physician Assistant (Certified)
Anesthesiology
Doctor of Osteopathic Medicine (D.O.)
Student in an Organized Health Care Education/Training Program
Doctor of Medicine (M.D.)
Student in an Organized Health Care Education/Training Program
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Physician Assistant (license number reported to NPPES: NY 029373-01)
NPI status registered as active in NPPES database
Registered at 450 CLARKSON AVE, BROOKLYN, NY 112032012 (Tel: 7182701000)
Registered at 450 CLARKSON AVE, BROOKLYN, NY 112032012
Recorded as KEITH KO, PA
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Brooklyn
- Michael Garbulsky, PA
- Jadzia Pineda Medina
- Michael Boucher, PA
- Rachel Tischler
- Brittany Ball
- Eileen Chen
Mailing Address
450 Clarkson Ave
Brooklyn, NY 112032012