JOHN W. GERWELS MD – NPI #1841245503
Dermatology
A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.
JOHN GERWELS is a dermatologist located in MISSOULA, MT. NPPES has assigned the NPI number 1841245503 to JOHN GERWELS on May 23, 2006. It is a Type-1 NPI, indicating this NPI number is associated with an individual. With multiple taxonomy codes selected, the primary taxonomy selected by this provider is 207N00000X from the Health Care Provider Taxonomy code set, which is classified as Dermatology.
The NPI profile was last updated on Sep 11, 2025. Use the NPI data found here to bill health insurance companies, identify providers enrolled in Medicare and Medicaid services or other HIPAA compliant transactions. See the complete NPI profile for JOHN GERWELS below.
NPI Profile for
JOHN W. GERWELS
(more than 20 years ago)
MISSOULA, MT 59802-4008 Phone: (406) 721-5600 Fax: (406) 721-3907
MISSOULA, MT 59807-7609 Phone: (406) 721-5600 Fax: (406) 721-3907
Identifiers for JOHN GERWELS
Identifiers are used to associate other provider identifiers such as Medicaid or other insurers (ie:, Blue Cross, Blue Shield, Aetna, Kaiser-Permanente, etc.), with their NPI number. These identifiers can be used in matching an NPI number to an insurer's records. However, not all providers have such numbers and not all providers choose to include them in their NPI information.
| Description | Issuer | State | Identifier |
|---|---|---|---|
| medicaid | MT | 0058616 |
A taxonomy code is a code that describes the health care service provider's type, classification, and the area of specialization. The primary specialty for this provider is indicated as (Primary) below.
| Taxonomy Classification / Specialization | State | License |
|---|---|---|
| 207N00000X - Dermatology (Primary) |
MT | 3759 |
| 207ND0101X - Dermatology / MOHS-Micrographic Surgery |
MT | 3759 |
The taxonomy codes are selected by the provider at the time of NPI registration. Selection of a taxonomy code does not replace any credentialing or validation process that the provider requesting the code should complete.