ROBERT T. WILLIS MD – NPI #1609983576
Internal Medicine
An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.
ROBERT WILLIS is a physician located in SHEBOYGAN, WI. NPPES has assigned the NPI number 1609983576 to ROBERT WILLIS on August 24, 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 207RP1001X from the Health Care Provider Taxonomy code set, which is classified as Internal Medicine, specializing in Pulmonary Disease
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 ROBERT WILLIS below.
NPI Profile for
ROBERT T. WILLIS
(about 20 years ago)
SHEBOYGAN, WI 53081 Phone: (920) 457-4461 Fax: (920) 459-1405
MILWAUKEE, WI 53215-2843 Phone: (414) 647-6326 Fax: (414) 671-8860
Identifiers for ROBERT WILLIS
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 | WI | 31199700 |
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 |
|---|---|---|
| 207RP1001X - Internal Medicine / Pulmonary Disease (Primary) |
WI | 17841 |
| 207R00000X - Internal Medicine |
WI | 17841 |
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.