Every new California business filing, every dayHematology & Oncology PhysicianHematology-OncologyActiveVerified
John Patresan, M.D.
SAN DIEGO CORPORATE LAW, A PROFESSIONAL LAW CORPORATION, Registered Agent
JOHN PATRESAN, M.D., INC. is a medical practice founded by Dr. John Patresan, a hematology and oncology specialist. The LLC's principal address is in Walnut Creek, California, while Dr. Patresan's practice is listed in Providence, Rhode Island, based on NPI data. He treats blood disorders and cancers, with a focus on hematology-oncology.
Filed July 20, 2026 · Walnut Creek, CA
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See how it worksAbout John Patresan, M.D.
John Patresan, M.D. is a hematology & oncology physician business (Corp) registered on July 20, 2026 with the California Division of Corporations. The business is located in Walnut Creek, California 94597. The record lists SAN DIEGO CORPORATE LAW, A PROFESSIONAL LAW CORPORATION as Registered Agent.
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Filing Details
Entity NameJOHN PATRESAN, M.D., INC.
Entity TypeCorp
Entity NumberB20260335350
Filing DateJuly 20, 2026
Principal AddressLocked
City / State / ZipWalnut Creek, CA 94597
TimezonePacific (PT)
EIN on FileNo
Registered AgentSAN DIEGO CORPORATE LAW, A PROFESSIONAL LAW CORPORATION
Verified Business Profile
SubcategoryHematology-Oncology
Contact Information
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Verified Website Profile
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Frequently Asked Questions
When was John Patresan, M.D. registered?
John Patresan, M.D. was registered as Corp on July 20, 2026 in California.
Where is John Patresan, M.D. located?
John Patresan, M.D. is based in Walnut Creek, CA, 94597.
What type of business is John Patresan, M.D.?
John Patresan, M.D. is classified as a hematology & oncology physician business (hematology-oncology).
Does John Patresan, M.D. have an EIN on file?
No EIN was found on file for John Patresan, M.D. at the time of registration.
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