Preferred Provider Organization. A health care organization composed of physicians, hospitals, or other providers which provides health care services at a reduced fee. A PPO is similar to an HMO, but care is paid for as it is received instead of in advance in the form of a scheduled fee.
MARK L BING, MD â NPI #1386642882. Internal Medicine. A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly.
* Address all correspondence to Wei Yu, PhD; School ofPublic Economics and Administration, Shanghai Univer-sity of Finance and Economics, 777 Guoding Rd, Shanghai,China 200433; 86-21-6590-4799; fax: 86-21-6510-4264.Email: wyu2@stanford.edu DOI: 10.1682/JRRD.2006.08.0102.