Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Dr. Mark R Kahn , MD

Dermatology • Valley Stream, NY

Active NPI 1023017464 Individual Practitioner Male Practitioner Accepts Medicare assignment
Practice location in NPPES

260 W Sunrise Hwy, Suite 305
Valley Stream, NY 115811011

Call 5167918664 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

260 W Sunrise Hwy
Suite 305

Valley Stream, NY 115811011

Telephone 5167918664
Fax 5167918420
Organization at the Same NPPES Address or Phone
Qlimg Valley Stream Med Office Facility NPI 1063592707

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

CMS Doctors and Clinicians lists 1 group name: Atlantic Dermatologic Associates, Llp. 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

Graduation Year

1985

Medicare patients

1,123 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.

Medicare-allowed amount

About $561,348 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.

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 $423,197 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

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

1,414 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

$77,852 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

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.

Open Payments general payments, program year 2025

All general payments: $2,480.84 across 119 records.

By nature of payment

  • Food and Beverage: $2,390.85 across 118 records.
  • Education: $89.99 across 1 record.

Reporting-company totals (3 largest of 20)

  • Janssen Pharmaceuticals, Inc: $394.31 across 18 records.
  • ABBVIE INC.: $316.32 across 16 records.
  • Novartis Pharmaceuticals Corporation: $214.27 across 9 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.

See the full table

Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).

Guide: How to read an Open Payments record

Years since graduation

41 years (graduated 1985)

CMS Doctors and Clinicians data list 1985 as the year this clinician finished professional 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

2005

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.

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?”

Guide: What Medicare assignment means

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.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Kahn 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.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Kahn 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.

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.

Guide: What ordering and referring status means

Compared with the same specialty in Valley Stream and New York

Billing and prescribing volume is not a quality rating.

Medicare Part B services

More Medicare Part B services than 90% of clinicians listed under Dermatology in New York (2024, 767 clinicians with data). Median for this group: 1,316. Middle half: 464 to 2,848.

Too few clinicians listed under Dermatology in Valley Stream have Medicare Part B data for 2024 to compare.

Medicare-allowed amount

A higher Medicare-allowed amount than 95% of clinicians listed under Dermatology in New York (2024, 767 clinicians with data). Median for this group: $99,216. Middle half: $39,676 to $225,516.

Too few clinicians listed under Dermatology in Valley Stream have Medicare Part B data for 2024 to compare.

Paid by Medicare

A higher Medicare payment amount than 95% of clinicians listed under Dermatology in New York (2024, 767 clinicians with data). Median for this group: $71,451. Middle half: $28,070 to $164,608.

Too few clinicians listed under Dermatology in Valley Stream have Medicare Part B data for 2024 to compare.

Medicare Part D prescriptions

More Part D prescriptions than 85% of clinicians listed under Dermatology in New York (2024, 898 clinicians with data). Median for this group: 441. Middle half: 150 to 948.

Too few clinicians listed under Dermatology in Valley Stream have Medicare Part D data for 2024 to compare.

Part D drug cost

Close to the middle for clinicians listed under Dermatology in New York (2024, 898 clinicians with data). Median for this group: $40,223. Middle half: $4,847 to $195,158.

Too few clinicians listed under Dermatology in Valley Stream have Medicare Part D data for 2024 to compare.

2 active clinicians are listed under Dermatology with a practice address in Valley Stream, NY (1,211 in New York).

Addresses are self-reported to NPPES and may be out of date.

Sources: CMS Medicare Physician & Other Practitioners (2024), 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 · 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

Open Payments · Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 – December 31, 2025): 119 records totaling $2,480.84.

Manufacturer Payment Nature Product Type Amount ($)
Janssen Pharmaceuticals, Inc
Education
In-kind items and services
TREMFYA General $89.99
Regeneron Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
DUPIXENT General $36.72
Regeneron Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
DUPIXENT General $36.30
Novartis Pharmaceuticals Corporation
Food and Beverage
In-kind items and services
COSENTYX General $34.48
Regeneron Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
DUPIXENT General $33.74
Regeneron Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
DUPIXENT General $32.46
UCB, Inc.
Food and Beverage
In-kind items and services
Bimzelx General $31.80
SUN PHARMACEUTICAL INDUSTRIES INC.
Food and Beverage
In-kind items and services
ILUMYA General $31.02
ABBVIE INC.
Food and Beverage
In-kind items and services
RINVOQ General $30.88
UCB, Inc.
Food and Beverage
In-kind items and services
Bimzelx General $30.68
ABBVIE INC.
Food and Beverage
In-kind items and services
SKYRIZI General $30.35
Regeneron Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
DUPIXENT General $29.46
UCB, Inc.
Food and Beverage
In-kind items and services
Bimzelx General $28.71
Janssen Pharmaceuticals, Inc
Food and Beverage
In-kind items and services
TREMFYA General $28.45
UCB, Inc.
Food and Beverage
In-kind items and services
Bimzelx General $28.23
UCB, Inc.
Food and Beverage
In-kind items and services
Bimzelx General $28.05
Sanofi and Genzyme US Companies
Food and Beverage
In-kind items and services
DUPIXENT General $27.99
ABBVIE INC.
Food and Beverage
In-kind items and services
SKYRIZI General $27.95
ABBVIE INC.
Food and Beverage
In-kind items and services
SKYRIZI General $27.81
Sanofi and Genzyme US Companies
Food and Beverage
In-kind items and services
DUPIXENT General $27.23
Galderma Laboratories, L.P.
Food and Beverage
In-kind items and services
— General $27.17
Sanofi and Genzyme US Companies
Food and Beverage
In-kind items and services
DUPIXENT General $27.15
Sanofi and Genzyme US Companies
Food and Beverage
In-kind items and services
DUPIXENT General $27.06
Amgen Inc.
Food and Beverage
In-kind items and services
OTEZLA General $26.82
Novartis Pharmaceuticals Corporation
Food and Beverage
In-kind items and services
COSENTYX General $26.80

(top 25 shown)

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B · Data Year 2024
Reporting Year:

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
99213 Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
1,379 839 $156.80 $106.30
17003 Destruction of precancer skin growth, 2-14 growths
1,359 263 $50.00 $7.87
11102 Biopsy of related skin growth, first growth
1,109 682 $220.00 $117.18
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
841 409 $149.25 $66.92
17000 Destruction of precancer skin growth, 1 growth
674 394 $150.00 $63.24
11103 Biopsy of related skin growth, each additional growth
605 359 $110.00 $59.94
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
216 210 $224.77 $148.87
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
186 186 $243.76 $130.59
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg
97 37 $10.00 $0.97
12032 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm
66 61 $500.00 $356.82
69100 Biopsy of ear
60 48 $250.00 $85.90
11900 Injection into skin growth, 1-7 growths
54 29 $125.00 $56.96
11302 Shaving of skin growth of body, arms, or legs, 1.1-2.0 cm
53 39 $220.00 $157.50
11403 Removal of noncancer skin growth of body, arms, or legs, 2.1-3.0 cm
49 45 $400.00 $119.80
11301 Shaving of skin growth of body, arms, or legs, 0.6-1.0 cm
45 39 $185.00 $129.65
11104 Punch biopsy, first skin growth
42 41 $250.00 $148.35
11901 Injection into skin growth, more than 7 growths
38 13 $175.00 $77.03
17004 Destruction of precancer skin growth, 15 or more growths
22 18 $500.00 $201.72
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
22 22 $295.45 $196.30
17110 Destruction of skin growth, 1-14 growths
18 12 $225.00 $137.57
36415 Insertion of needle into vein for collection of blood sample
16 12 $30.00 $8.65
11603 Removal of cancer skin growth of body, arms, or legs, 2.1-3.0 cm
15 15 $500.00 $167.41
11311 Shaving of skin growth of face, ears, eyelids, nose, lips, or mouth, 0.6-1.0 cm
14 14 $210.00 $151.83
12031 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.5 cm or less
12 12 $415.00 $316.33
40490 Biopsy of lip
12 11 $275.00 $134.34

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.

CMS Part D · Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Mupirocin Mupirocin 372 6,602 $2,646.75 307
Triamcinolone Acetonide Triamcinolone Acetonide 171 5,027 $1,229.53 119
Fluocinonide Fluocinonide 148 4,578 $5,821.97 93
Ketoconazole Ketoconazole 104 3,164 $1,694.49 47
Ammonium Lactate Ammonium Lactate 91 2,955 $1,683.77 54
Econazole Nitrate Econazole Nitrate 74 2,065 $2,804.71 54
Hydrocortisone Hydrocortisone 65 1,533 $300.99 50
Betamethasone Dipropionate Betamethasone Dipropionate 55 1,579 $2,106.61 26
Cefadroxil Cefadroxil 42 427 $418.39 31
Clobetasol Propionate Clobetasol Propionate 31 1,051 $551.25 14
Levocetirizine Dihydrochloride Levocetirizine Dihydrochloride 26 1,020 $153.48 —
Hydrocortisone Valerate Hydrocortisone Valerate 26 682 $484.20 19
Clindamycin Phosphate Clindamycin Phosphate 25 795 $1,110.46 16
Metronidazole Metronidazole 22 669 $1,241.32 18
Doxycycline Hyclate Doxycycline Hyclate 19 197 $122.91 16
Cephalexin Cephalexin 17 66 $39.14 15
Gentamicin Sulfate Gentamicin Sulfate 14 336 $432.98 11
Dupixent Syringe Dupilumab 14 392 $54,305.30 —
Ciclopirox Ciclopirox 11 540 $703.43 —

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

Dermatology Primary Specialty

NUCC Taxonomy Code: 207N00000X

License # reported to NPPES NY 174507

A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.

Dermatology

NUCC Taxonomy Code: 207N00000X

License # reported to NPPES NY 174507-1

A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.

Dermatology - Procedural Dermatology

NUCC Taxonomy Code: 207NS0135X

License # reported to NPPES NY 174507-1

Procedural Dermatology, a subspecialty of Dermatology, encompassing a wide variety of surgical procedures and methods to remove or modify skin tissue for health or cosmetic benefit. These methods include scalpel surgery, laser surgery, chemical surgery, cryosurgery (liquid nitrogen), electrosurgery, aspiration surgery, liposuction, injection of filler substances, and Mohs micrographic controlled surgery (a special technique for the removal of growths, especially skin cancers).

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: New York Office of the Professions.
Look Up on State Board Site

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid ID
01836048 (NY)

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - DERMATOLOGY

Medicare Enrollment ID

I20040911000313

Enrollment State Jurisdiction

NY

PECOS Control ID

5799752572

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

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

Atlantic Dermatologic Associates, Llp

444 Merrick Rd, Lynbrook, NY 115632400

Phone: 5165994242

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

1 listed
Michelle Renzi , RPA-C

Physician Assistant

NPI 1174726228

RPAC

Career & Practice History

NPI enumerated July 19, 2005.

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.

No reviews have been published yet. Leave a review.

NPI Administrative Meta

NPI Number: 1023017464
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: July 19, 2005
Last Update: August 27, 2013
Sole Proprietor: No

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Mailing Address

266 Merrick Rd, Suite 201

Lynbrook, NY 115632640

Phone: 5165994242

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.