Internal Medicine
Caring for Your Overall Health and Wellness
The Internal Medicine department at Cornerstone Family Healthcare includes board-certified internal medicine doctors, commonly referred to as “internists.” These providers see patients for routine checkups and screenings, as well as complex, acute and chronic illnesses or injuries—and are strong advocates for preventive care. They are specially trained in preventing, diagnosing, and treating a wide variety of diseases and other health issues.
Cornerstone’s internal medicine doctors provide a wide range of services, including:
- Preventive Care
- Immunizations
- Yearly Physicals
- Chronic Care Management
- Diagnostic Tests
- Acute Visits for Flu, Colds,Sinus Infections, Sore Throat, UTIs and more
- Behavioral Health Needs
- Treatment of Infectious Diseases
- Senior Care
Locations
Providers
Internal Medicine
Lydia Regan, PA-C

Internal Medicine
Lydia Regan, PA-C
- (607) 201-1204
Internal Medicine
Marissa Carmine, PA
Internal Medicine
Margaret Speedling, FNP-BC

Internal Medicine
Margaret Speedling, FNP-BC
- (845) 563-8000
Internal Medicine
Alberto Gonzalez, MD

Internal Medicine
Alberto Gonzalez, MD
- (845) 563-8000
Internal Medicine
Michelle He, PA

Internal Medicine
Michelle He, PA
- (845) 563-8000
Internal Medicine
Yvette Figueroa

Internal Medicine
Yvette Figueroa
- (845) 563-8000
Internal Medicine
Hema Dave, DO

Internal Medicine
Hema Dave, DO
- (845) 563-8000
Internal Medicine
Koreen E. Thomas, FNP

Internal Medicine
Koreen E. Thomas, FNP
- (845) 563-8000
Internal Medicine
Julieta Hernandez, MD
Internal Medicine
Angela Hulse, DO

Internal Medicine
Angela Hulse, DO
- (845) 563-8000
Internal Medicine
Chanchal Singh, MD

Internal Medicine
Chanchal Singh, MD
- (845) 563-8000
Endocrinology
Penelope Guccione, FNP

Endocrinology
Penelope Guccione, FNP
- (845) 563-8000
Internal Medicine
Wendy Dawn Rodriguez, MSN, FNP-BC, RN

Internal Medicine
Wendy Dawn Rodriguez, MSN, FNP-BC, RN
- (845) 563-8000
Internal Medicine
Denise Gianelli Lopez, MD

Internal Medicine
Denise Gianelli Lopez, MD
- (845) 563-8000
Internal Medicine
Maria Rodriguez Dominguez, MD

Internal Medicine
Maria Rodriguez Dominguez, MD
- (845) 563-8000
Internal Medicine
Stacie Chasin, MD

Internal Medicine
Stacie Chasin, MD
- (845) 563-8000
Internal Medicine
Lydia Regan, PA-C

Internal Medicine
Lydia Regan, PA-C
- (607) 201-1204
Internal Medicine
Marissa Carmine, PA
Internal Medicine
Margaret Speedling, FNP-BC

Internal Medicine
Margaret Speedling, FNP-BC
- (845) 563-8000
Internal Medicine
Alberto Gonzalez, MD

Internal Medicine
Alberto Gonzalez, MD
- (845) 563-8000
Internal Medicine
Michelle He, PA

Internal Medicine
Michelle He, PA
- (845) 563-8000
Internal Medicine
Yvette Figueroa

Internal Medicine
Yvette Figueroa
- (845) 563-8000
Internal Medicine
Hema Dave, DO

Internal Medicine
Hema Dave, DO
- (845) 563-8000
Internal Medicine
Koreen E. Thomas, FNP

Internal Medicine
Koreen E. Thomas, FNP
- (845) 563-8000
Internal Medicine
Julieta Hernandez, MD
Internal Medicine
Angela Hulse, DO

Internal Medicine
Angela Hulse, DO
- (845) 563-8000
Internal Medicine
Chanchal Singh, MD

Internal Medicine
Chanchal Singh, MD
- (845) 563-8000
Endocrinology
Penelope Guccione, FNP

Endocrinology
Penelope Guccione, FNP
- (845) 563-8000
Internal Medicine
Wendy Dawn Rodriguez, MSN, FNP-BC, RN

Internal Medicine
Wendy Dawn Rodriguez, MSN, FNP-BC, RN
- (845) 563-8000
Internal Medicine
Denise Gianelli Lopez, MD

Internal Medicine
Denise Gianelli Lopez, MD
- (845) 563-8000
Internal Medicine
Maria Rodriguez Dominguez, MD

Internal Medicine
Maria Rodriguez Dominguez, MD
- (845) 563-8000
Internal Medicine
Stacie Chasin, MD

Internal Medicine
Stacie Chasin, MD
- (845) 563-8000

