JAMES G LAHTI M.D.
NPI 1689783086
Dermatology - MOHS-Micrographic Surgery in Northbrook, IL

Q: What is James Lahti's NPI number?

The NPI number for James Lahti is 1689783086. It was assigned to this individual provider in the NPPES registry on August 30, 2006.

Q: What is James Lahti's specialty?

The primary specialty registered for this NPI is Dermatology, specializing in MOHS-Micrographic Surgery, with taxonomy code 207ND0101X.

Q: When was this NPI record last updated?

The NPPES record for James Lahti was last updated on September 11, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since August 30, 2006PECOS EnrolledAccepts Medicare Assignment

97.25/100

CMS Quality Rating

400 SKOKIE BLVD, SUITE 475, NORTHBROOK, IL 60062(847) 272-4433 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

On this page

About James G Lahti M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JAMES G LAHTI M.D. (NPI 1689783086) is an individual mohs-micrographic surgery provider in Northbrook, Illinois and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Northshore University Healthsystem - Evanston Hospital, and is a graduate of Northwestern University Feinberg Medical School (1994).

NPPES Registry Identity

NPI1689783086

Entity TypeIndividualMale

Primary Taxonomy207ND0101X

Provider Legal NameJAMES G LAHTICredential: M.D.

Location Address400 SKOKIE BLVD, SUITE 475Northbrook, IL 60062-7930

Mailing Address400 Skokie Blvd, Suite 475Northbrook, IL 60062-7930 · (847) 272-4433

Phone(847) 272-4433

Sole ProprietorNo

Medical School CMSNorthwestern University Feinberg Medical SchoolGraduated 1994

Enumeration DateAugust 30, 2006

Last NPPES UpdateSeptember 11, 2025

✔ NPI 1689783086 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyDermatology · MOHS-Micrographic SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code207ND0101X

Definition

The highly-trained surgeons that perform Mohs Micrographic Surgery are specialists both in dermatology and pathology. With their extensive knowledge of the skin and unique pathological skills, they are able to remove only diseased tissue, preserving healthy tissue and minimizing the cosmetic impact of the surgery. Mohs surgeons who belong to the American College of Mohs Surgery (ACMS) have completed a minimum of one year of fellowship training at one of the ACMS-approved training centers in the U.S.

Also ListedDermatologyTaxonomy 207N00000X

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

James G Lahti M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID345146122

PECOS Enrollment IDI20031211000507

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 51

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Aminolevulinic acid hcl for topical administration, 10% gel, 10 mg J7345

Aminolevulinic acid hcl is a topical gel used to treat certain skin conditions. It works by making affected skin cells more sensitive to light, which is then used to destroy these cells. The gel is applied by a healthcare professional.

2,800 services14 patients

Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks 17311

This procedure involves the careful removal of a growth from the head, neck, hands, or feet. The removed tissue, divided into 1-5 blocks, is then examined under a microscope to study its characteristics and determine the nature of the growth.

1,106 services864 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

837 services452 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

553 services461 patients

Epifix, per square centimeter Q4186

Epifix is an advanced wound care treatment, derived from human placental tissue. It helps to promote healing by providing a protective barrier and supplying growth factors. Each square centimeter refers to the size of the Epifix graft needed for your specific wound.

468 services35 patients

Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks 17312

This procedure involves the careful removal of abnormal growths from the head, neck, hands, or feet. The removed tissues, divided into 1-5 blocks, are then examined under a microscope to identify any irregularities. The process may be carried out in multiple stages for thorough examination.

427 services337 patients

Destruction of precancer skin growth, 2-14 growths 17003

This procedure involves removing 2-14 precancerous skin growths. The growths are treated to prevent them from potentially developing into skin cancer. The process is safe, with minimal discomfort, and promotes healthier skin.

405 services110 patients

Pathology examination of tissue using a microscope, intermediate complexity 88305

A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.

394 services230 patients

Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm 13132

This procedure involves the complex repair of a wound in areas like the forehead, cheeks, chin, mouth, neck, underarms, hands, or feet. The wound size ranges from 2.6-7.5 cm. The process includes cleaning, removing damaged tissue, and stitching the wound for proper healing.

359 services344 patients

Removal and microscopic exam of growth of trunk, arms, or legs, 1-5 tissue blocks 17313

This procedure involves the removal of a growth from your trunk, arms, or legs. The removed tissue, divided into 1-5 blocks, is then examined under a microscope to identify any abnormalities. This helps in diagnosing and planning further treatment.

277 services229 patients

Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm 12032

This procedure involves the repair of a wound between 2.6-7.5 cm located on the scalp, underarms, trunk, arms, or legs. The process includes cleaning, debridement (removal of damaged tissue), and suturing (stitching) of the wound to promote healing.

264 services249 patients

Biopsy of related skin growth, first growth 11102

A biopsy of a skin growth involves taking a small sample of the growth to examine it under a microscope. This helps determine if the growth is harmful. The procedure is typically quick, with minimal discomfort. It's a crucial step in ensuring your skin's health.

251 services209 patients

Destruction of precancer skin growth, 1 growth 17000

"Destruction of precancer skin growth" is a procedure that eliminates a single precancerous skin growth. This is done to prevent it from developing into skin cancer. The growth may be removed using various methods such as cryotherapy (freezing), laser therapy, or topical medications.

231 services179 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

200 services155 patients

Complicated repair of wound of scalp, arms, or legs, 2.6-7.5 cm 13121

This is a procedure to repair a complex wound on your scalp, arm, or leg that is 2.6-7.5 cm long. It involves cleaning, removing damaged tissue, and stitching the wound to promote healing. It's performed under local or general anesthesia.

108 services106 patients

Repair of wound of eyelids, nose, ears, or lips by transferring skin, 10.0 sq cm or less 14060

This procedure involves repairing a wound on the eyelids, nose, ears, or lips by moving a small piece of skin (10.0 sq cm or less) from one area to another. The goal is to heal the wound and restore the function and appearance of the affected area.

83 services83 patients

Biopsy of related skin growth, each additional growth 11103

A biopsy of related skin growth is a procedure where a small piece of skin growth is removed for testing. If additional growths are identified, they may also be biopsied. This helps in diagnosing skin conditions and planning appropriate treatment.

74 services50 patients

Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm 17262

This procedure involves removing a cancerous skin growth on the trunk, arms, or legs that is between 1.1 and 2.0 cm in size. The growth is destroyed using methods like surgery, laser, or freezing, aiming to eliminate cancer and prevent its spread.

73 services43 patients

Application of skin substitute graft to wound of trunk, arms, or legs, 25.0 sq cm or less of wound 100.0 sq cm or less 15271

This procedure involves applying a skin substitute graft to a wound on the trunk, arms, or legs. The graft, a lab-grown skin, is used to cover a wound area of 25.0 sq cm or less, within a total wound area of 100.0 sq cm or less. It aids in healing and regeneration.

70 services30 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

70 services70 patients

Destruction of skin growth, 1-14 growths 17110

"Destruction of skin growth" refers to a procedure where 1-14 abnormal skin growths are removed. This is done using methods such as freezing, burning, or laser therapy. It helps prevent the growth from causing discomfort or turning into a more serious condition.

65 services56 patients

Pathology examination of specimen during surgery, first tissue block 88331

A pathology examination during surgery involves the immediate analysis of a removed tissue sample. This helps the surgeon make decisions during your operation. The "first tissue block" refers to the initial sample examined. It's a vital step to ensure your health.

59 services52 patients

Intermediate repair of wound of neck, hands, feet, or genitals, 2.6-7.5 cm 12042

This is a procedure to mend a moderate wound between 2.6-7.5 cm on your neck, hands, or feet. It involves cleaning the wound, removing any damaged tissue, and stitching it back together to promote healing and minimize scarring.

51 services51 patients

Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 1.1-2.5 cm 13131

This procedure involves the complex repair of a wound in areas like the forehead, cheeks, chin, mouth, neck, underarms, hands, or feet. The wound size is between 1.1-2.5 cm. This repair may involve multiple layers of sutures and could require reconstruction of the skin.

47 services45 patients

Complicated repair of wound of eyelids, nose, ears, or lip, 2.6-7.5 cm 13152

This procedure involves repairing a wound on your eyelids, nose, ears, or lip that is between 2.6 and 7.5 cm long. It's considered complicated due to the location and size. The doctor will clean, treat, and stitch the wound to promote healing.

47 services46 patients

Complicated repair of wound of eyelids, nose, ears, or lip, 1.1-2.5 cm 13151

This procedure involves the intricate repair of a wound that is 1.1 to 2.5 cm long on your eyelids, nose, ears, or lip. The goal is to mend the wound carefully to preserve function and minimize scarring. The process may involve stitching and other techniques.

40 services40 patients

Removal and microscopic exam of growth of trunk, arms, or legs, each additional stage, 1-5 tissue blocks 17314

This procedure involves removing growths from the trunk, arms, or legs. The removed tissues, divided into 1-5 blocks, are then examined under a microscope to identify any abnormalities. This aids in diagnosing and treating your condition effectively.

37 services35 patients

Destruction of cancer skin growth of trunk, arms, or legs, 0.6-1.0 cm 17261

This procedure involves the removal of a cancerous skin growth on the trunk, arms, or legs that is between 0.6 and 1.0 cm in size. The goal is to eliminate the cancerous cells and prevent further spread. The method of destruction may vary, including methods such as surgery, laser, or cryotherapy.

30 services23 patients

Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.0 sq cm or less 14040

This procedure involves repairing a wound on various body parts by transferring skin from another area. The transferred skin, up to 10.0 sq cm, helps to cover the wound, promoting healing and reducing scarring. It's a common method for treating larger or deeper wounds.

29 services28 patients

Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 7.6-12.5 cm 12034

This procedure involves the repair of a moderate-sized wound (7.6-12.5 cm) on the scalp, underarms, trunk, arms, or legs. It includes cleaning, removing damaged tissue, and stitching the wound to promote healing. Local anesthesia is used for comfort.

28 services28 patients

Intermediate repair of wound of face, ears, eyelids, nose, lips, or mouth, 2.5 cm or less 12051

This procedure involves repairing a wound on your face, ears, eyelids, nose, lips, or mouth. The wound is 2.5 cm or less in size. The repair process includes cleaning, treating, and stitching the wound to promote optimal healing. It's a standard, safe procedure.

28 services27 patients

Removal of cancer skin growth of body, arms, or legs, 2.1-3.0 cm 11603

This procedure involves the removal of a cancerous skin growth, between 2.1 and 3.0 cm, from the body, arms, or legs. The area is numbed, then the growth is carefully cut out. The goal is to eliminate all cancer cells while minimizing scarring.

27 services26 patients

Full thickness skin graft to nose, ears, eyelids, or lips, 20.0 sq cm or less 15260

A full thickness skin graft is a procedure where a layer of skin is taken from one area of the body and transplanted to another. If it's done on the nose, ears, eyelids, or lips, it helps restore these areas when damaged. The size of the graft is 20.0 sq cm or less.

27 services27 patients

Removal of noncancer skin growth of body, arms, or legs, 1.1-2.0 cm 11402

This procedure involves the removal of a noncancerous skin growth on the body, arms, or legs that is between 1.1 and 2.0 cm in size. It's a safe and routine procedure performed by a medical professional to improve your skin health and appearance.

24 services24 patients

Intermediate repair of wound of neck, hands, feet, or genitals, 2.5 cm or less 12041

This procedure involves the repair of a wound located on the neck, hands, or feet, measuring 2.5 cm or less. The process includes cleaning, closure, and dressing of the wound to promote healing and prevent infection. It is classified as 'intermediate' due to the complexity of the involved area.

24 services24 patients

Biopsy of ear 69100

A biopsy of the ear is a medical procedure where a small sample of tissue is taken from your ear for examination. This helps doctors diagnose any abnormalities or diseases. It's a simple process, usually done under local anesthesia, and has minimal risks.

23 services21 patients

Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm 11602

This procedure involves the surgical removal of a cancerous skin growth on the body, arms, or legs. The growth is between 1.1 and 2.0 cm in size. The goal is to eliminate cancer cells and prevent them from spreading to other parts of the body.

22 services21 patients

Punch biopsy, first skin growth 11104

A punch biopsy is a procedure where a small, circular tool is used to remove a sample of skin tissue. This is usually done to test a skin growth for potential issues. You may feel a pinch, but discomfort is minimal. The area heals quickly.

20 services20 patients

Repair of wound of eyelids, nose, ears, or lips by transferring skin, 10.1-30.0 sq cm 14061

This procedure involves repairing a wound on the eyelids, nose, ears, or lips by transferring skin from another part of the body. The size of the skin transferred will be between 10.1 to 30.0 square centimeters. It is performed to restore function and appearance.

20 services20 patients

Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.5 cm or less 12031

This procedure involves the repair of a wound that is located on the scalp, underarms, trunk, arms, or legs and is 2.5 cm or less in size. The repair is intermediate, meaning it's more complex than a simple closure, but not as extensive as a complex repair.

19 services19 patients

Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.1-30.0 sq cm 14041

This procedure involves repairing a wound on specified body areas by transferring skin from another part of the body. The transferred skin, measuring between 10.1 to 30.0 square cm, aids in healing the wound and restoring the skin's normal function.

18 services18 patients

Removal of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 2.1-3.0 cm 11643

This procedure involves the careful removal of a cancerous growth on the face, ears, eyelids, nose, lips, or mouth that measures between 2.1 to 3.0 cm. The goal is to eliminate the cancer while preserving surrounding healthy tissue.

16 services15 patients

Repair of wound by transferring skin, 30.1-60.0 sq cm 14301

This procedure involves repairing a wound by moving healthy skin from one area of the body to the wound site. The transferred skin, measuring between 30.1-60.0 square cm, aids in healing and reduces scarring.

16 services16 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

15 services15 patients

Creation of flap graft to eyelids, nose, ears, lips, or mouth 15576

A flap graft is a procedure where tissue from a healthy part of your body is moved to repair damaged areas in your eyelids, nose, ears, lips, or mouth. This can help restore function and appearance. The tissue remains connected to its original blood supply, promoting healing.

14 services14 patients

New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more 99202

This service involves an initial visit to the doctor's office or other outpatient setting. It typically lasts between 15-29 minutes. The doctor will review your medical history, conduct a physical examination, and discuss your health concerns. It's a chance to establish your health baseline and address any immediate medical issues.

14 services14 patients

Removal of cancer skin growth of body, arms, or legs, 3.1-4.0 cm 11604

This procedure involves removing a cancerous skin growth measuring 3.1-4.0 cm on the body, arms, or legs. The area is numbed, then the growth is carefully cut out. The wound is stitched for healing. Regular follow-ups ensure complete removal and recovery.

13 services13 patients

Intermediate repair of wound of face, ears, eyelids, nose, lips, or mouth, 2.6-5.0 cm 12052

This procedure involves repairing a wound on the face, ears, eyelids, nose, lips, or mouth that measures between 2.6-5.0 cm. The process includes cleaning, suturing if necessary, and dressing the wound to promote healing and prevent infection.

13 services13 patients

Obtaining ear cartilage for grafting 21235

Obtaining ear cartilage for grafting involves a minor surgical procedure. A small piece of cartilage is taken from your ear, usually from a hidden area. This cartilage can then be used to repair or reconstruct other parts of the body. The procedure is generally safe with minimal discomfort.

13 services13 patients

Application of light with debridement to destroy precancer skin growth 96574

This procedure involves applying a special light source to the skin after removing dead tissue (debridement). The light helps destroy precancerous growths, preventing them from developing into skin cancer. It's a safe and effective method to keep your skin healthy.

13 services13 patients

Removal of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm 11642

This procedure involves the surgical removal of a cancerous skin growth on the face, ears, eyelids, nose, lips, or mouth. The growth is between 1.1-2.0 cm in size. This is done to prevent the cancer from spreading and to restore health.

11 services11 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Northshore University Healthsystem - Evanston Hospital

Acute Care Hospitals · Evanston, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number140010

Location2650 Ridge AveEvanston, IL 60201 · Cook County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60062 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$94.06 typical visit price

range $60.08 – $183.39

Typical copayment $23.51 (range $15.02 – $45.84)

Most-billed visit code 99203

Established Patient

$74.80 typical visit price

range $18.97 – $148.12

Typical copayment $18.70 (range $4.74 – $37.03)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

97.25/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

Promoting Interoperability

100

Improvement Activities

Reported Quality Measures

Advance Care Plan

100%1,228 patients5/55-star benchmark: 100%

Melanoma: Continuity of Care - Recall System

100%49 patients

Melanoma: Coordination of Care

100%262 patients

Patient-Centered Surgical Risk Assessment and Communication

100%340 patients5/55-star benchmark: 100%

Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention

Patients screened: 100% · 498 patients

100%498 patients

Provide Patients Electronic Access to Their Health Information

99%1,138 patients4/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

PETER S HALLARMAN M.D.

Dermatology

400 SKOKIE BLVD, SUITE 475
NORTHBROOK, IL 60062

Cook County (847) 272-4433

DERMATOLOGY PARTNERS OF THE NORTH SHORE LLC

Dermatology

400 SKOKIE BLVD, SUITE 475
NORTHBROOK, IL 60062

Cook County (847) 272-4433

JEFFREY C DRALUCK M.D.

Dermatology

400 SKOKIE BLVD, SUITE 475
NORTHBROOK, ID 60062

Cook County (847) 272-4433

DPNS SURGICAL CENTER

Clinic/Center (Ambulatory Surgical)

400 SKOKIE BLVD, 450
NORTHBROOK, IL 60062

Cook County (847) 272-4433

GINA C MARAFINO M.D.

Dermatology

400 SKOKIE BLVD, SUITE 475
NORTHBROOK, IL 60062

Cook County (847) 272-4433

ANNE K BRONNER M.D.

Dermatology

400 SKOKIE BLVD, SUITE 475
NORTHBROOK, IL 60062

Cook County (847) 272-4433

DR. NICOLE PAPASTATHIS HUFFMAN M.D.

Dermatology

400 SKOKIE BLVD, SUITE 475
NORTHBROOK, IL 60062

Cook County (847) 272-4433

DR. GEORGE MICHAEL LEWITT M.D.

Dermatology

400 SKOKIE BLVD, SUITE 475
NORTHBROOK, IL 60062

Cook County (847) 272-4433

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is James Lahti's NPI number?

The NPI number for James Lahti is 1689783086. It was assigned to this individual provider in the NPPES registry on August 30, 2006.

Where is James Lahti located?

James Lahti practices at 400 Skokie Blvd Suite 475, Northbrook, IL 60062. The listed phone number is (847) 272-4433.

What is James Lahti's specialty?

The primary specialty registered for this NPI is Dermatology, specializing in MOHS-Micrographic Surgery, with taxonomy code 207ND0101X.

Is James Lahti enrolled in Medicare?

Yes. James Lahti is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is James Lahti affiliated with any hospitals?

According to CMS data, James Lahti is affiliated with Northshore University Healthsystem - Evanston Hospital.

When was this NPI record last updated?

The NPPES record for James Lahti was last updated on September 11, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.