Medical PracticeOsteopathic PhysicianActiveVerified

Ultimate Sports Orthopaedics

Robert Sanders Esq., Registered Agent

John Harker DO, Inc. is a professional corporation for an osteopathic physician. Candidate W3, Ultimate Sports and Orthopaedics, is an orthopedic practice based in Apple Valley, CA, and likely where the doctor operates. The practice accepts most insurance and offers sports medicine and orthopedic care.

Filed December 18, 2025 · Apple Valley, CA · San Bernardino County

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Source

California Secretary of State (bizfile Online) · Entity B20250428188 · Retrieved May 14, 2026

Search the registry for B20250428188 ›JSON record ›

About Ultimate Sports Orthopaedics

John Harker DO, Inc. filed as a California corporation on December 18, 2025, with Robert Sanders Esq. as the registered agent, filed personally. The company is based in Apple Valley, California, in osteopathic physician practice. Its domain was registered on September 18, 2010, over 15 years before the filing, through Tucows Domains. The website is modern and we estimate revenue between $100K and $1M with 1 to 5 employees, operating from a brick-and-mortar location. The same owner name appears on 17 other entities. No annual report or EIN on file yet.

  • Domain registered 5,570 days before the filing date.
  • The registered agent was filed personally by Robert Sanders Esq.
  • The same owner name appears on 17 other entities.
  • We estimate revenue of $100K-$1M and 1-5 employees.
  • The website is modern and the business has a brick-and-mortar footprint.
  • No annual report or EIN on file yet.

Compiled from the state record, the company's public web presence, and our own research; revenue, employee, and footprint figures are estimates, not verified financials. Updated August 24, 2026.

One of 8 new businesses registered in Apple Valley in December 2025, and the only medical practice business registered there that month.

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Filing Details

Entity NameJohn Harker DO, Inc.
Entity TypeCorp
Entity NumberB20250428188
Filing DateDecember 18, 2025
Principal AddressLocked
City / State / ZipApple Valley, CA 92307
CountySan Bernardino
TimezonePacific (PT)
EIN on FileNo
Registered AgentRobert Sanders Esq.
Filed ViaSelf-filed (owner is the registered agent)
WebsiteYes · domain registered 5570 days before filing · registrar Tucows Domains
Website BuildModern
Annual ReportNot yet filed
Estimated Revenue$100K-$1M (estimate)
Estimated Employees1-5 (estimate)
FootprintBrick and mortar (estimate)
Related Filings17 with the same owner name
First Recorded by DayOneLeadMay 14, 2026 (147 days after filing)

Verified Business Profile

SubcategoryOsteopathic Physician

Contact Information

WebsiteLocked
PhoneLocked
EmailLocked
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Verified Website Profile

We matched this business to its website and pulled the domain's registration (WHOIS) record. Domain age is one of the strongest signals that a filing is a truly new business and not a re-filing or paperwork change.

Domain RegisteredLocked
Domain AgeLocked
RegistrarLocked
Website PlatformLocked
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Frequently Asked Questions

When was Ultimate Sports Orthopaedics registered?

Ultimate Sports Orthopaedics was registered as Corp on December 18, 2025 in California.

Where is Ultimate Sports Orthopaedics located?

Ultimate Sports Orthopaedics is based in Apple Valley, CA, 92307, in San Bernardino County.

What type of business is Ultimate Sports Orthopaedics?

Ultimate Sports Orthopaedics is classified as a medical practice business (osteopathic physician).

Does Ultimate Sports Orthopaedics have an EIN on file?

No EIN was found on file for Ultimate Sports Orthopaedics at the time of registration.

Who Sells to This Business

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