Physician Profile
Michael H. Fretzin, MD
Unclaimed ProfileAbout Dr. Fretzin
Based in Buffalo Grove, IL, Michael H. Fretzin, MD is listed in the NPI registry under dermatology. Michael is also listed as specializing in mohs surgery / dermatologic surgery and dermatopathology. Medicare claims data shows Michael provided 9,680 services to 5,014 patients. The services billed most often include destruction of precancer skin growth, 2-14 growths, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and pathology examination of tissue using a microscope, intermediate complexity. NPI 1134118987 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) 459-6611
- Email not available
Practice Locations
600 W LAKE COOK RD SUITE 110
Buffalo Grove, IL 60089
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
Most searched conditions
Acne and follicular disorders
- Folliculitis
- Hidradenitis suppurativa
Eczema and inflammatory skin disease
Infections and infestations
- Cellulitis
- Foot fungus
- Herpes simplex of the skin
- Molluscum contagiosum
- Scabies
- Shingles
- Warts
Pigment, growths, and benign lesions
- Melasma
- Seborrheic keratosis
Skin cancer
- Basal cell skin cancer
- Squamous cell skin cancer
Urticaria, itch, and vascular
- Chronic itching
- Excessive sweating
- Hives
Autoimmune and connective tissue
- Vitiligo
Infections
- Ringworm
Rashes & allergy
- Poison Ivy
Skin growths
- Keloid scars
Procedures & services
Most searched procedures
- Botox
- Chemical peel
- Laser hair removal
- Microneedling
- Mole removal
- Skin cancer screening
Diagnostic procedures
- Patch testing
- Skin biopsy
Lesion treatment
- Complex skin lesion excision
- Cryotherapy for skin lesions
- Electrodesiccation and curettage
- Incision and drainage of an abscess
Medical dermatology treatment
- Botulinum toxin treatment for excessive sweating
Cosmetic
- Acne scar treatment
- Dermal fillers
- Sclerotherapy
- Tattoo removal
Cosmetic and minor surgery
- Sun spot removal
Cosmetic dermatology
- Laser skin resurfacing
- Laser treatment of vascular lesions
Diagnostic
- Mole mapping
- Skin scraping test
General dermatology
- Biologic drug management
- Cortisone shot for cysts
Infections
Medical dermatology
Nails & hair
Skin cancer surgery
- Mohs surgery
Skin growths
- Cyst Removal
- Lipoma removal
- Skin Tag Removal
- Steroid injection for keloids
Procedures Most Often Billed to Medicare
9,680 services · 5,014 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Destruction of precancer skin growth, 2-14 growths | Procedure | 17003 |
3,238 | More often than most peers in Dermatology |
| Destruction of precancer skin growth, 1 growth | Procedure | 17000 |
842 | More often than most peers in Dermatology |
| Biopsy of related skin growth, first growth | Procedure | 11102 |
551 | More often than most peers in Dermatology |
| Destruction of skin growth, 1-14 growths | Procedure | 17110 |
246 | More often than most peers in Dermatology |
| Biopsy of related skin growth, each additional growth | Procedure | 11103 |
216 | More often than most peers in Dermatology |
| Destruction of precancer skin growth, 15 or more growths | Procedure | 17004 |
88 | As often as other peers in Dermatology |
| Injection into skin growth, 1-7 growths | Procedure | 11900 |
55 | More often than most peers in Dermatology |
| Punch biopsy, first skin growth | Procedure | 11104 |
52 | More often than most peers in Dermatology |
| Simple or single drainage of skin abscess | Procedure | 10060 |
47 | More often than most peers in Dermatology |
| Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm | Procedure | 17262 |
38 | 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 3
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 Buffalo Grove 2
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1996 at Other 8
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 IL who bill this service to Medicare most often.
Common questions
What does Dr. Fretzin specialize in?
Dr. Fretzin is a dermatologist (skin doctor) in Buffalo Grove, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Dermatology”.
NPI registry
Where is Dr. Fretzin located?
Dr. Fretzin is listed at 600 W Lake Cook Rd Suite 110, Buffalo Grove, IL 60089. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Fretzin's phone number?
The number on file is (847) 459-6611. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Fretzin?
Dr. Fretzin's National Provider Identifier is 1134118987. 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. Fretzin go to medical school?
Dr. Fretzin attended Other, graduating in 1996. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Fretzin have?
Dr. Fretzin has 30 years experience. Calculated from a graduation year of 1996, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Fretzin do most often?
According to Medicare billing data, Dr. Fretzin performs procedures including destruction of precancer skin growth, 2-14 growths, destruction of precancer skin growth, 1 growth and biopsy of related skin growth, first growth; reads or performs imaging such as superficial and/or low voltage radiation treatment delivery and obtaining data needed to develop the optimal radiation treatment, 1 treatment area; provides treatments such as injection of drug or substance under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Fretzin's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Fretzin. If this is you, claiming it is free.
Guide.md
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