This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / AK

WALTER GRENELL, DO

EMERGENCY MEDICINE

Graduated: 2013

NPI: 1669714994

Practice Locations (2)

CENTRAL PENINSULA GENERAL HOSPITAL INC

250 HOSPITAL PL

SOLDOTNA, AK 996697559

9077144515

HAWAII EMERGENCY PHYSICIANS ASSOCIATED INC

1190 WAIANUENUE AVE

HILO, HI 967202089

8089746800

Source: CMS National Downloadable File, September 2026.

WALTER GRENELL, DO | HealthCareAtlasUSA