Find National Provider Identifier (NPI) Number of Preferred Provider Organization Doctors in Callahan. NPI is a 10-digit identification number which is issued to health care providers by the Centers for Medicare and Medicaid Services (CMS) in the United States (US). You can also find mailing address, contact information and other necessary information of all Preferred Provider Organization Doctors in Callahan.

Definition of Preferred Provider Organization - A group of physicians and/or hospitals who contract with an employer to provide services to their employees. In a PPO, the patient may got to the physician of his/her choice, even if that physician does not participate in the PPO, but the patient receives care at a lower benefit level.
Just simply click on the name of the doctor whose details you want to know from the below list.