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Edit this profileAt a glance
- 537 Stanton Christiana Rd, Suite # 207, Newark, DE 19713
About Dr. Mashek
Helen A. Mashek, MD practices dermatology in Newark, DE. Helen is a 1990 graduate of Rutgers New Jersey Medical School. Medicare claims data shows Helen provided 14,764 services to 4,927 patients. The services billed most often include aminolevulinic acid hcl for topical administration, 10% gel, 10 mg, destruction of precancer skin growth, 2-14 growths, and established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more. The provider's National Provider Identifier (NPI) is 1023012515.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (302) 633-7550
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
537 STANTON CHRISTIANA RD SUITE # 207
Newark, DE 19713
Conditions Commonly Evaluated or Treated
Within Dermatology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Autoimmune and connective tissue
Cancer care
Pediatric and genetic
Rashes & allergy
Wounds & skin
Most searched conditions
Acne and follicular disorders
Eczema and inflammatory skin disease
Infections and infestations
Pigment, growths, and benign lesions
Skin cancer
Urticaria, itch, and vascular
Infections
Skin growths
Procedures & services
Bladder & bowel
Cosmetic & plastics
Cosmetic dermatology
Diagnostic procedures
- Dermoscopy
- Excisional skin biopsy
- Punch biopsy
- Shave biopsy
- Skin scraping for fungal or mite testing
- Patch testing
- Skin biopsy
Lesion treatment
- Chemical treatment of skin lesions
- Incision and drainage of an abscess
- Intralesional medication injection
- Complex skin lesion excision
- Cryotherapy for skin lesions
- Electrodesiccation and curettage
Medical dermatology treatment
Skin and Scars
Skin cancer surgery
Skin growths
Wound Care
Most searched procedures
Cosmetic
Cosmetic and minor surgery
Diagnostic
General dermatology
Infections
Medical dermatology
Nails & hair
Procedures Most Often Billed to Medicare
14,764 services · 4,927 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Destruction of precancer skin growth, 2-14 growths | Procedure | 17003 |
3,133 | More than most peers in Dermatology |
| Destruction of precancer skin growth, 1 growth | Procedure | 17000 |
1,084 | More than most peers in Dermatology |
| Destruction of skin growth, 1-14 growths | Procedure | 17110 |
640 | More than most peers in Dermatology |
| Biopsy of related skin growth, first growth | Procedure | 11102 |
561 | More than most peers in Dermatology |
| Biopsy of related skin growth, each additional growth | Procedure | 11103 |
163 | More often than most peers in Dermatology |
| Destruction of precancer skin growth, 15 or more growths | Procedure | 17004 |
117 | More often than most peers in Dermatology |
| Acne surgery | Procedure | 10040 |
59 | More often than most peers in Dermatology |
| Punch biopsy, first skin growth | Procedure | 11104 |
58 | More than most peers in Dermatology |
| Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm | Procedure | 17262 |
27 | As often as other peers in Dermatology |
| Injection into skin growth, 1-7 growths | Procedure | 11900 |
27 | As often as other peers in Dermatology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other dermatologists at this location 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 29 related providers in 4 groups
Other dermatologists in Newark 6
Same specialty, same city.
Trained at Rutgers New Jersey Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 1990 at Rutgers New Jersey Medical School 7
Providers who graduated from the same medical school in the same year.
Also performs Destruction of precancer skin growth, 2-14 growths 8
Providers in DE who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Mashek?
Dr. Mashek is a dermatologist (skin doctor) in Newark, DE. That is the designation recorded for this NPI in the federal registry, where it is listed as “Dermatology”.
NPI registry
What is Dr. Mashek's address?
Dr. Mashek is listed at 537 Stanton Christiana Rd Suite # 207, Newark, DE 19713. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Mashek?
The number on file is (302) 633-7550. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Mashek?
Dr. Mashek's National Provider Identifier is 1023012515. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Mashek train?
Dr. Mashek attended Rutgers New Jersey Medical School, graduating in 1990. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Mashek have?
Dr. Mashek has 36 years experience. Calculated from a graduation year of 1990, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Mashek perform?
According to Medicare billing data, Dr. Mashek performs procedures including destruction of precancer skin growth, 2-14 growths, destruction of precancer skin growth, 1 growth and destruction of skin growth, 1-14 growths; provides treatments such as therapy procedure using ultraviolet radiation with tar or petroleum jelly application and application of light to destroy precancer skin growth, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Mashek's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Mashek. If this is you, claiming it is free.
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