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- 201 S Wabena Ave, Minooka, IL 60447
About Dr. Demask
John Demask, D.O. is a healthcare provider in Minooka, IL specializing in family practice. John trained at Chicago College of Osteopathy, graduating in 1993. John is also listed as specializing in family medicine. According to Medicare claims data, John cared for 514 Medicare patients across 1,076 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month, and insertion of needle into vein for collection of blood sample. This provider record is associated with NPI 1174501134.
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
- (815) 467-1518
- Email not available
Practice Locations
201 S WABENA AVE
Minooka, IL 60447
Conditions Commonly Evaluated or Treated
Within Family Medicine 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
- Allergies
- Diabetes
- Flu
- Hypothyroidism
- Strep throat
- UTI
Cardiometabolic
Digestive
- Acid reflux
- IBS
Genitourinary and reproductive
- Erectile dysfunction
- Heavy periods
Musculoskeletal and pain
Neurologic and behavioral
Respiratory and infectious
- Acute bronchitis
- Asthma
- Sinus infection
Skin
Common childhood and ear conditions
- Ear infection
- Pink eye
Pain & Joints
- Arthritis
- Back pain
Procedures & services
Most searched procedures
- Annual physical
- Blood test
- Flu shot
- Medicare wellness visit
- Sick visit
- TB test
- Well-woman exam
Preventive interventions
- Birth control counseling
- Smoking cessation counseling
Screening and testing
- Cholesterol screening
- Depression screening
- Diabetes and prediabetes screening
- EKG
Diagnostic Tests
- COVID-19 testing
- Rapid Strep and Flu Swabs
- Urine Drug Screen
Exams & Screenings
- Camp and School Physical
- Pre-Op Clearance Exam
Foot and Leg Pain
- Toenail Fungus Treatment
Heart & Circulation
Injections
- Immunotherapy
- Vitamin B12 Injections
Lungs & Breathing
- Pulmonary function test
Minor Procedures
- Burn and Wound Care
- Ingrown toenail removal
- Suture removal
Occupational Health
- DOT Physical
Office procedures
- Earwax removal
- Incision and drainage of an abscess
- Superficial foreign-body removal
Pain Management
- Joint injections
Preventive Care
- Chronic Illness Checkup
- Routine Vaccines
- Travel Vaccines And Consult
Respiratory
- Breathing Treatment
Senior Care
- Cognitive Assessment
Sexual & Reproductive Health
- STD Swabs and Screening
Skin Procedures
- Cyst Removal
- Precancerous Sun Spot Freezing
- Skin Tag Removal
- Wart Removal
Sleep Health
- At-Home Sleep Study Order
Urgent Care Procedures
- Stitches and Laceration Repair
Wellness & Weight
- Weight Management Consult
Women's Health
- Hormone Replacement Therapy Consultation
Procedures Most Often Billed to Medicare
1,076 services · 514 patients · 6 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
226 | More often than most peers in Family Practice |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
435 | More often than most peers in Family Practice |
| Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | Office visit | 99490 |
302 | More often than most peers in Family Practice |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
75 | As often as other peers in Family Practice |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
27 | Less often than most peers in Family Practice |
| Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment | Billing code | G0402 |
11 | Less often than most peers in Family Practice |
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.
Also at this address 2
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other family practices in Minooka 2
Same specialty, same city.
Trained at Chicago College of Osteopathy 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1993 at Chicago College of Osteopathy 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in IL who bill this service to Medicare most often.
Common questions
What is John Demask's specialty?
John Demask is a family practice in Minooka, IL. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find John Demask?
John Demask is listed at 201 S Wabena Ave, Minooka, IL 60447. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact John Demask?
The number on file is (815) 467-1518. Contact the office directly to confirm availability and scheduling.
NPI registry
What is John Demask's NPI number?
John Demask's National Provider Identifier is 1174501134. 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
What is John Demask's education?
John Demask attended Chicago College of Osteopathy, graduating in 1993. This comes from the CMS National Downloadable File.
CMS public data
How long has John Demask been practicing?
John Demask has 33 years experience. Calculated from a graduation year of 1993, reported in the CMS National Downloadable File.
CMS public data
What is John Demask known for?
According to Medicare billing data, John Demask performs procedures including insertion of needle into vein for collection of blood sample, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has John Demask confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by John Demask. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.