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Edit this profileAt a glance
- 400 Skokie Blvd, Suite 475, Northbrook, IL 60062
About Dr. Lahti
Based in Northbrook, IL, James G. Lahti, M.D. is listed in the NPI registry under dermatology. James graduated from Northwestern University Feinberg Medical School in 1994. According to Medicare claims data, James cared for 4,500 Medicare patients across 9,319 services. The services billed most often include aminolevulinic acid hcl for topical administration, 10% gel, 10 mg, removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks, and established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more. NPI 1689783086 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
- (847) 272-4433
- Email not available
Practice Locations
400 SKOKIE BLVD SUITE 475
Northbrook, IL 60062
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
9,319 services · 4,500 patients · 25 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 |
1,106 | More 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 |
427 | More than most peers in Dermatology |
| Destruction of precancer skin growth, 2-14 growths | Procedure | 17003 |
405 | As often as other 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 |
359 | More than most peers in Dermatology |
| Removal and microscopic exam of growth of trunk, arms, or legs, 1-5 tissue blocks | Procedure | 17313 |
277 | More than most peers in Dermatology |
| Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm | Procedure | 12032 |
264 | More than most peers in Dermatology |
| Biopsy of related skin growth, first growth | Procedure | 11102 |
251 | More often than most peers in Dermatology |
| Destruction of precancer skin growth, 1 growth | Procedure | 17000 |
231 | As often as other peers in Dermatology |
| Complicated repair of wound of scalp, arms, or legs, 2.6-7.5 cm | Procedure | 13121 |
108 | More often than most peers in Dermatology |
| Repair of wound of eyelids, nose, ears, or lips by transferring skin, 10.0 sq cm or less | Procedure | 14060 |
83 | More than most 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 8
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 Northbrook 4
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Northwestern University Feinberg Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 1994 at Northwestern University Feinberg Medical School 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 kind of doctor is James G. Lahti?
James G. Lahti is a dermatologist (skin doctor) in Northbrook, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Dermatology”.
NPI registry
What is James G. Lahti's address?
James G. Lahti is listed at 400 Skokie Blvd Suite 475, Northbrook, IL 60062. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with James G. Lahti?
The number on file is (847) 272-4433. Contact the office directly to confirm availability and scheduling.
NPI registry
What is James G. Lahti's NPI number?
James G. Lahti's National Provider Identifier is 1689783086. 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 James G. Lahti train?
James G. Lahti attended Northwestern University Feinberg Medical School, graduating in 1994. This comes from the CMS National Downloadable File.
CMS public data
How long has James G. Lahti been practicing?
James G. Lahti has 32 years experience. Calculated from a graduation year of 1994, reported in the CMS National Downloadable File.
CMS public data
What procedures does James G. Lahti perform?
According to Medicare billing data, James G. Lahti 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 destruction of precancer skin growth, 2-14 growths, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has James G. Lahti confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by James G. Lahti. If this is you, claiming it is free.
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