Dr. John M. Demay
- Gender: Male
- Experience: 32 years
- Graduated from: University Of Nebraska College Of Medicine
- Graduation year: 1989
- Sole propriator: Yes
- NPI: 1366447294
Dr. John M. Demay MD
Dermatologist
He is located at 2930 Hamilton Boulevard Ste 102 in Sioux City, IA 51104. Can help patients with the following: Alopecia Areata (AA), Hyperhidrosis, Ingrown Hair, Keloid, Rosacea, Thrush. His National Provider Identifier (NPI) number is 1366447294. Appointment can be made via the phone number (712) 277-9370. He is affiliated with 2 practices and 1 hospitals.
Conditions treated
Dr. John Mark Demay, being an dermatologist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. John M. Demay.
- Acne
- Actinic Keratosis
- Albinism
- Alopecia Areata (AA)
- Athlete's Foot
- Birthmarks
- Blister
- Bug Bites
- Contact Dermatitis
- Dermabrasion
- Dry Skin
- Eczema
- Erythema Nodosum
- Folliculitis
- Hair Loss
- Heat Rash
- Henoch-Schonlein Purpura (HSP)
- Hives
- Hyperhidrosis
- Impetigo
- Ingrown Hair
- Intertrigo
- Jock Itch
- Keloid
- Keratosis Pilaris (KP)
- Lichen Planus
- MRSA Infection
- Melanoma
- Melasma
- Moles
- Molluscum Contagiosum
- Pityriasis Rosea
- Porphyria
- Psoriasis
- Ringworm
- Rosacea
- Scabies
- Scars
- Sebaceous Cyst
- Seborrhea
- Seborrheic Keratosis
- Shingles
- Skin Biopsy
- Skin Cancer
- Skin Itching
- Skin Tag
- Streptococcal Infections
- Stretch Marks
- Sunburn and Sun Poisoning
- Thrush
- Tinea Versicolor
- Varicose Veins
- Vitiligo
- Warts
- Wrinkles
Procedures Performed by Dr. John M. Demay
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. John M. Demay as in-network for the following 2026 plans.
Health plans
Avera Health Plans
Network data as of Jan 23, 2026, as reported by the insurer.
Show all 12 plans from Avera Health Plans
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| ConnectPlus $0 Gold | PPO · Gold | Commercial | Accepting new patients |
| ConnectPlus $0 Silver | PPO · Silver | Commercial | Accepting new patients |
| ConnectPlus $10,600 HSA Eligible HDHP | PPO · Catastrophic | Commercial | Accepting new patients |
| ConnectPlus $1800 | PPO · Gold | Commercial | Accepting new patients |
| ConnectPlus $4500 | PPO · Silver | Commercial | Accepting new patients |
| ConnectPlus $6500 HSA Eligible HDHP | PPO · Expanded Bronze | Commercial | Accepting new patients |
| ConnectPlus $7500 HSA Eligible HDHP | PPO · Expanded Bronze | Commercial | Accepting new patients |
| ConnectPlus MyWeighForward $2000 | PPO · Gold | Commercial | Accepting new patients |
| ConnectPlus MyWeighForward $6000 | PPO · Silver | Commercial | Accepting new patients |
| ConnectPlus Standard $2000 | PPO · Gold | Commercial | Accepting new patients |
| ConnectPlus Standard $6000 | PPO · Silver | Commercial | Accepting new patients |
| ConnectPlus Standard $7500 HSA Eligible HDHP | PPO · Expanded Bronze | Commercial | Accepting new patients |
Medica
Network data as of Apr 7, 2025, as reported by the insurer.
Show all 18 plans from Medica
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Inspire by Medica Bronze $0 Copay PCP Visits | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Inspire by Medica Bronze Share | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Inspire by Medica Expanded Bronze Standard | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Inspire by Medica Gold $0 Copay PCP Visits | EPO · Gold | Preferred | Accepting new patients |
| Inspire by Medica Gold Share | EPO · Gold | Preferred | Accepting new patients |
| Inspire by Medica Gold Standard | EPO · Gold | Preferred | Accepting new patients |
| Inspire by Medica Silver $0 Copay PCP Visits | EPO · Silver | Preferred | Accepting new patients |
| Inspire by Medica Silver Share | EPO · Silver | Preferred | Accepting new patients |
| Inspire by Medica Silver Standard | EPO · Silver | Preferred | Accepting new patients |
| Medica Insure Bronze $0 Copay PCP Visits | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Medica Insure Bronze Share | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Medica Insure Expanded Bronze Standard | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Medica Insure Gold $0 Copay PCP Visits | EPO · Gold | Preferred | Accepting new patients |
| Medica Insure Gold Share | EPO · Gold | Preferred | Accepting new patients |
| Medica Insure Gold Standard | EPO · Gold | Preferred | Accepting new patients |
| Medica Insure Silver $0 Copay PCP Visits | EPO · Silver | Preferred | Accepting new patients |
| Medica Insure Silver Share | EPO · Silver | Preferred | Accepting new patients |
| Medica Insure Silver Standard | EPO · Silver | Preferred | Accepting new patients |
Oscar Insurance Company
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 10 plans from Oscar Insurance Company
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Bronze Classic 4700 | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Classic Standard | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Elite + PCP Saver Plus | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Gold Classic Standard | EPO · Gold | Preferred | Accepting new patients |
| Gold Elite | EPO · Gold | Preferred | Accepting new patients |
| Secure | EPO · Catastrophic | Preferred | Accepting new patients |
| Silver Classic | EPO · Silver | Preferred | Accepting new patients |
| Silver Classic Standard | EPO · Silver | Preferred | Accepting new patients |
| Silver Simple Diabetes | EPO · Silver | Preferred | Accepting new patients |
| Silver Simple PCP Saver | EPO · Silver | Preferred | Accepting new patients |
Wellmark Health Plan of Iowa, Inc.
Network data as of Sep 8, 2026, as reported by the insurer.
Show all 10 plans from Wellmark Health Plan of Iowa, Inc.
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Wellmark Bronze HDHP HMO HSA Qualified | HMO · Expanded Bronze | Wellmark Blue HMO Network | Accepting new patients |
| Wellmark Bronze Standard | UnityPoint Health | HMO · Expanded Bronze | Wellmark Blue HMO Unitypoint Health Network | Accepting new patients |
| Wellmark Bronze Traditional HMO | HMO · Expanded Bronze | Wellmark Blue HMO Network | Accepting new patients |
| Wellmark Gold Primary Care | UnityPoint Health | HMO · Gold | Wellmark Blue HMO Unitypoint Health Network | Accepting new patients |
| Wellmark Gold Traditional HMO | HMO · Gold | Wellmark Blue HMO Network | Accepting new patients |
| Wellmark Silver Primary Care | UnityPoint Health | HMO · Silver | Wellmark Blue HMO Unitypoint Health Network | Accepting new patients |
| Wellmark Silver Traditional HMO | HMO · Silver | Wellmark Blue HMO Network | Accepting new patients |
| Wellmark Standard Bronze HMO | HMO · Expanded Bronze | Wellmark Blue HMO Network | Accepting new patients |
| Wellmark Standard Gold HMO | HMO · Gold | Wellmark Blue HMO Network | Accepting new patients |
| Wellmark Standard Silver HMO | HMO · Silver | Wellmark Blue HMO Network | Accepting new patients |
This covers ACA Marketplace plans only, as reported by each insurer. It does not include employer, Medicare Advantage, or state-run exchange plans, and a plan missing from this list does not mean Dr. John M. Demay is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.
Medicare Enrollment
Dr. John M. Demay is enrolled to bill Medicare as a Practitioner - Dermatology .
Bills through: Dermatology Associates Of Siouxland Pc
Based on Medicare's public enrollment records as of Sep 29, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Payments received
Drug payment
| Galderma International | $125 |
| Strata Skin Sciences | $44 |
| Aqua Pharmaceuticals | $14 |
Other
| Food and Beverage | $186 |
Studies
UNIVERSITY OF NEBRASKA COLLEGE OF MEDICINE
Graduated in 1989
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Questions & Answers
Does Dr. John Mark Demay have affiliation with practices?
Dr. John Mark Demay is affiliated with Cardiovascular Associates. For the full list of practices see this list.
What conditions does Dr. John Mark Demay treat?
Dr. John Mark Demay provides treatment for Alopecia Areata (AA), Hyperhidrosis, Ingrown Hair, Keloid, Rosacea, Thrush. For the full list see this list.
Does Dr. John Mark Demay accept patients with Avera Health Plans?
Yes, Dr. John Mark Demay is listed in-network for Avera Health Plans through the ACA Marketplace (Obamacare/HealthCare.gov). See the Marketplace plans section for details.
Has Dr. John Mark Demay affiliation with hospitals?
Dr. John Mark Demay is affiliated with ST LUKES REGIONAL MEDICAL CENTER.
Where can you meet with Dr. John Mark Demay?
Dr. John Mark Demay's office is located at 2930 Hamilton Boulevard Ste 102 in Sioux City, IA 51104.