Dr. Simpson (first name unknown) is the chief of complicated surgeries at the invasive care clinic.
History[]
Homer is devastated when he can't find any successful Simpson men to prove to Lisa that there is no genetic condition causing intelligence deterioration. As a last-ditch effort, he grabs Dr. Simpson, who explains that the defective Simpson Gene is only on the Y (male) Chromosome. Dr. Simpson looks a lot like Lisa, but older, and her hair is more down than up. She is Homer's relative.
Dr. Simpson later appears in "Catch 'Em if You Can" in a flashback of Uncle Tyrone's birthday last year. It is unknown if she attended his birthday this year. However, if she did, she most likely would have been killed in the tornado in Dayton at the hotel where he was staying.
Episode Appearances[]
Episode – "Lisa the Simpson" - Episode – "Catch 'Em if You Can" (Cameo in flashback)
Simpson family
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| Simpson Family | ||
 Homer Simpson •  Marge Simpson •  Bart Simpson •  Lisa Simpson •  Maggie Simpson • Santa's Little Helper •  Snowball II
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| Homer's living relatives | ||
 Abraham_Simpson •  Abbey •  Herbert Powell •  Tyrone Simpson •  Dr. Simpson •  Cyrus Simpson •  Chet Simpson •  Stanley Simpson • Bill Simpson • Cousin Francine • Cyrus' 15 wives
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| Marge's living relatives | ||
 Jacqueline Bouvier •  Selma Bouvier •  Patty Bouvier •  Ling Bouvier •  Jub-Jub Bouvier •  Eunice Bouvier
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| Homer's deceased relatives | ||
 Amber Simpson Mona Simpson • Hubert Simpson •  Aunt Hortense Orville Simpson • Bonita Simpson • Elrita Simpson • Twitta Simpson •  Yuma Hickman "Old Tut" Simpson •  Gaston Simpson •  Hugo Simpson I • Dulcine Simpson • Lou Simpson • Floyd Simpson •  "Happy" Simpson Howland Simpson • Zeke Simpson • Pippa Simpson •  Gabby Crouse Garwood Simpson • Ivy Simpson • Galston Simpson • Prudence Simpson • Trixie Simpson •  Clowta Stillman Rupert Simpson •  Lambert Simpson •  Winifred Running Goat • Humphrey Little Goat • Jane Nervous Goat Sven Simpson •  Claretta Ethridge • Mary Frowning Cloud • Joe Puffing Goat
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| Marge's deceased relatives | ||
| Clancy Bouvier • Uncle Lou • Alvarine Bisque • Uncle Arthur • Alfreda Bouvier II • Françoise Billout • Antoine Bouvier • Axel Bouvier • Bambi Bouvier • Charlene Bouvier • Chester Bouvier • Dorothé Bouvier • JoJo Bouvier • Monique Bouvier • Pépé Bouvier • Victor Bouvier • Victor Bouvier II • Cléo Bouvier • Didi Bouvier • Ferdinand Gurney • Aunt Gladys • Honoré Bouvier • Alfreda LeDoux • Angelique Marceau • Marcel Bouvier • Bambi Petitbois • Pierre Bouvier • Rowena Bouvier • Yves Bouvier | ||
| Non-canon characters | ||
 Hugo Simpson II •  Zia Simpson •  Skippy Simpson •  Jiff Simpson •  Maggie Simpson, Jr. •  Bart Simpson, Jr. •  Lisa and Ralph's children •  Lisa and Nelson's child •  Ishmael Simpson • Ezekiel Simpson •  Silas Simpson •  Gentleman Jim Simpson •  19th-century Whaler Homer Simpson •  Abe Simpson Sr. •  Olidia Simpson •  Rube Ella Simpson •  Luke Simpson •  Jason Simpson •  Tori-Mae Simpson •  Lisa Marie Simpson •  Baby Leroy Simpson •  Zeke Simpson •  Zza-Zza Simpson
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| Other Pets | ||
| Bart Junior • Chirpy Boy and Bart Junior • Coltrane • Duncan • Greyhound Puppies • Henry the Canary • Laddie • Lou • Mojo • Pinchy • Plopper • Princess • Smiley • Snowball I • Snowball II • Snowball III • Snowball V • Snuffy • Stampy • Strangles • She's the Fastest | ||