Updated November 2026How we check doctors
Same order as the list above. A comparison, not a ranking.
| Doctor | Type | Education and training | Reviews |
|---|---|---|---|
| Alan S. Penzias, MD | Concierge · Reproductive Endocrinology and Infertility physician | Obstetrics and gynecology, Beth Israel Hospital and Harvard Medical School | 5.0 (3) |
| Kim L. Thornton, MD | Concierge · Reproductive Endocrinology and Infertility physician | Obstetrics and gynecology, Wayne State University School of Medicine | 5.0 (3) |
| Rita Sneeringer, MD | Concierge · Reproductive Endocrinology and Infertility physician | OB/GYN, Beth Israel Deaconess Medical Center | 5.0 (2) |
FindMyDirectDoctor lists 3 concierge reproductive endocrinology and infertility doctors in Waltham, MA at 1 practice. We last checked this list in November 2026.
We confirmed board certification for 3 doctors on this list. Each profile shows the board and the specialty.
3 of the 3 doctors have patient reviews on FindMyDirectDoctor, 8 reviews in total. Each tile shows the doctor's rating and review count.
It depends on the practice. Many direct primary care and concierge practices charge a membership fee instead of billing insurance for office visits, and some also accept insurance. Each profile says how its practice works when the practice states it.