Paul Lam MD in OB GYN practice over 30 years, Located in the Parsippany office. Frieda Lewis MD - OB GYN in practice over 10 years, located in the Sparta and Parsippany office. Andria Pennant MD - OB GYN in practice over 10 years, located in the Sparta and Parsippany office. Bernadette Walsh ANP is located in both Sparta and Parsippany offices.