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Edit this profileWhere to find Katherine M. Mercy, MD
- Naperville location main office
2155 City Gate Ln Ste 225, Naperville, IL 60563 - Naperville location
1520 Bond St, Naperville, IL 60563 - Berwyn location
3253 S Harlem Ave Ste 1A, Berwyn, IL 60402 - Crest Hill location
2051 Plainfield Rd, Crest Hill, IL 60403
About Dr. Mercy
Based in Naperville, IL, Katherine M. Mercy, MD is listed in the NPI registry under dermatology. Katherine graduated from Georgetown University School of Medicine in 2008. Medicare claims data shows Katherine provided 1,053 services to 926 patients. The services billed most often include removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks, removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks, and intermediate repair of wound of face, ears, eyelids, nose, lips, or mouth, 2.6-5.0 cm. NPI 1134385255 identifies this record in the national registry.
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
- (630) 547-5040
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
2155 CITY GATE LN STE 225
Naperville, IL 60563
1520 Bond St
Naperville, IL 60563
3253 S Harlem Ave Ste 1A
Berwyn, IL 60402
2051 Plainfield Rd
Crest Hill, IL 60403
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
- Acne scar treatment
- Dermal fillers
- Sclerotherapy
- Tattoo removal
Cosmetic and minor surgery
Diagnostic
General dermatology
Infections
Medical dermatology
Nails & hair
Procedures Most Often Billed to Medicare
1,053 services · 926 patients · 17 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks | Procedure | 17311 |
359 | More often than most peers in Dermatology |
| Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks | Procedure | 17312 |
128 | As often as other peers in Dermatology |
| Intermediate repair of wound of face, ears, eyelids, nose, lips, or mouth, 2.6-5.0 cm | Procedure | 12052 |
81 | More often than most peers in Dermatology |
| Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm | Procedure | 12032 |
51 | More often than most peers in Dermatology |
| Intermediate repair of wound of face, ears, eyelids, nose, lips, or mouth, 2.5 cm or less | Procedure | 12051 |
41 | More often than most peers in Dermatology |
| Removal and microscopic exam of growth of trunk, arms, or legs, 1-5 tissue blocks | Procedure | 17313 |
38 | As often as other peers in Dermatology |
| Biopsy of related skin growth, first growth | Procedure | 11102 |
36 | Less often than most peers in Dermatology |
| Destruction of precancer skin growth, 1 growth | Procedure | 17000 |
33 | Less often than most peers in Dermatology |
| Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm | Procedure | 13132 |
33 | Less often than most peers in Dermatology |
| Intermediate repair of wound of neck, hands, feet, or genitals, 2.6-7.5 cm | Procedure | 12042 |
26 | 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 4
Same specialty, same street address — most likely the same department or group.
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.
Other dermatologists in Naperville 6
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Georgetown University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2008 at Georgetown University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks 8
Providers in IL who bill this service to Medicare most often.
Common questions
What does Dr. Mercy specialize in?
Dr. Mercy is a dermatologist (skin doctor) in Naperville, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Dermatology”.
NPI registry
Where is Dr. Mercy located?
Dr. Mercy is listed at 2155 City Gate Ln Ste 225, Naperville, IL 60563. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Mercy's phone number?
The number on file is (630) 547-5040. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Mercy?
Dr. Mercy's National Provider Identifier is 1134385255. 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. Mercy go to medical school?
Dr. Mercy attended Georgetown University School of Medicine, graduating in 2008. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Mercy have?
Dr. Mercy has 18 years experience. Calculated from a graduation year of 2008, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Mercy do most often?
According to Medicare billing data, Dr. Mercy performs procedures including removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks, removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks and intermediate repair of wound of face, ears, eyelids, nose, lips, or mouth, 2.6-5.0 cm, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Mercy's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Mercy. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.