Atty. Jon Masa Ishibashi

Atty. Jon Masa Ishibashi

Jon Masa Ishibashi is a lawyer practicing corporate, taxation, franchises and franchising and 5 other areas of law. Jon received a B.A. degree from Stanford University in 1981, and has been licensed for 42 years.

San Ramon San Ramon 42 yrs experience 42 year
Call (925) 351-0230 Book Appointment

Profile Summary

About Jon Masa Ishibashi at a glance

Jon Masa Ishibashi is a Partner based in San Ramon, California, practicing at Greenan, Peffer, Sallander & Lally LLP. They have 42+ years of legal experience, licensed to practice since 1984. Their practice focuses on trusts, business, real estate, ip, and tax. Admitted to practice in California (1984), U.S. District Court, Northern District of California (1984), and U.S. Tax Court (1989). Educated at Golden Gate University (LL.M. Taxation, 1990) and Stanford University (B.A., 1981). Active member of Contra Costa County Bar Association American Bar Association. Serands clients in San Ramon, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Jon Masa Ishibashi is a lawyer practicing corporate, taxation, franchises and franchising and 5 other areas of law
  • Jon received a B.A. degree from Stanford University in 1981, and has been licensed for 42 years
  • Jon practices at Greenan, Peffer, Sallander & Lally LLP in San Ramon, CA

Practice Areas Explained

Jon Masa Ishibashi's Areas of Practice

Each practice area below reflects the types of cases Jon Masa Ishibashi handles, with a brief overview of what that area of law covers.

Trusts

Jon Masa Ishibashi is one of 104,171 trusts attorneys indexed nationally. Browse trusts attorneys in California →

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

Jon Masa Ishibashi is one of 501,317 business attorneys indexed nationally. Browse business attorneys in California →

Real Estate Law

Real estate attorneys handle home purchases, sales, commercial transactions, title disputes, and landlord-tenant matters.

Jon Masa Ishibashi is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in California →

Intellectual Property

IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.

Jon Masa Ishibashi is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in California →

Tax Law

Tax attorneys handle IRS audits, tax debt, international tax, estate planning, and tax court litigation.

Jon Masa Ishibashi is one of 85,302 tax attorneys indexed nationally. Browse tax attorneys in California →

Jurisdictional Context

Why local counsel matters in California

Practicing law in California. Legal matters in California are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in San Ramon are typically filed in the local municipal court or the appropriate California state district court, depending on subject matter and amount in controversy. An attorney licensed in California brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in California courts without local counsel or pro hac vice admission.

Looking for additional California attorneys? Browse all attorneys in San Ramon or all attorneys in California.

Frequently Asked

Common questions about Jon Masa Ishibashi

Where is Jon Masa Ishibashi's law office located?
Jon Masa Ishibashi's law practice is located in San Ramon, California. The firm is Greenan, Peffer, Sallander & Lally LLP. You can contact the office directly through this profile page.
What practice areas does Jon Masa Ishibashi handle?
Jon Masa Ishibashi focuses on trusts, business, real estate, ip, tax. Each practice area listed reflects experience handling cases of that type in California.
How long has Jon Masa Ishibashi practiced law?
Jon Masa Ishibashi has 42+ years of legal experience and has been licensed since 1984.
Where did Jon Masa Ishibashi go to law school?
Jon Masa Ishibashi earned their education at (LL.M. Taxation, 1990); (B.A., 1981).
How can I contact Jon Masa Ishibashi for a consultation?
You can contact Jon Masa Ishibashi directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Education

LL.M. Taxation
Golden Gate University
- 1990
B.A.
Stanford University
- 1981

Bar Admissions

California
Admitted: 1984
U.S. District Court, Northern District of California
Admitted: 1984
U.S. Tax Court
Admitted: 1989

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