National Bank of Arizona
National Bank of Arizona, commonly branded as NB|AZ, is an Arizona-focused banking division of Zions Bancorporation, N.A. The bank was founded in Tucson in 1984 as a community bank built around local relationships, commercial real-estate lending, professional customers, and small and midsize Arizona businesses. More than four decades later, NB|AZ continues to operate under a locally managed banking model while benefiting from the resources, technology, regulatory infrastructure, and capital strength of Zions Bancorporation.
Today, National Bank of Arizona serves personal, business, commercial, private-banking, mortgage, treasury-management, merchant-services, and investment-related customers across Arizona. Its current operations include consumer deposits and loans, small-business banking, commercial lending, commercial real estate, treasury management, foreign exchange, merchant services, mortgage lending, private banking, and related financial solutions. Current career materials continue to identify Phoenix as the home of its Biltmore Corporate Office and show active banking operations throughout Phoenix, Scottsdale, Tucson, Mesa, Prescott Valley, Yuma, and other Arizona markets.
National Bank of Arizona is not a separately chartered public bank today. It operates as a division of Zions Bancorporation, N.A., which had approximately $89 billion in total assets as of December 31, 2025 and operates local banking brands in 11 western states. The current President and Chief Executive Officer of National Bank of Arizona is Mark Stebbings, who also serves as an executive vice president of Zions Bancorporation.
National Bank of Arizona
Biltmore Corporate Office
6001 N. 24th Street
Phoenix, AZ 85016
United States
National Bank of Arizona established this Phoenix property as its corporate headquarters after acquiring the former Del Webb headquarters site. Current NB|AZ career postings continue to identify the Phoenix Biltmore location as the bank’s Corporate Office, confirming that Phoenix remains the center of its Arizona leadership and corporate operations.
The bank’s main Arizona corporate presence is its Biltmore Corporate Office in Phoenix. Current job postings place commercial banking, loan operations, facilities management, treasury management, relationship banking, and senior support functions at this office.
National Bank of Arizona does not prominently publish a separate universal corporate mailing address for ordinary customer correspondence on its main current contact page. Customers should use the address printed on their account, loan, deposit, or department correspondence when mailing documents.
Parent company
Zions Bancorporation, N.A.
One South Main Street
Salt Lake City, UT 84133-1109
This address is relevant for parent-company investor and corporate matters rather than normal NB|AZ branch servicing.
National Bank of Arizona began in Tucson in 1984, but its modern corporate headquarters operations are centered in Phoenix. Older references describing Tucson as the headquarters should therefore be treated as historical rather than current.
National Bank of Arizona does not prominently publish a separate public headquarters switchboard on its current main contact page.
For verified client support, use
888-241-5550.
888-241-5550
Monday to Friday: 7:00 AM to 6:00 PM MST.
6001 N. 24th Street, Phoenix, AZ 85016
6001 N. 24th Street, Phoenix, AZ 85016
Treasury Management Client Services: tmclientservices@nbarizona.com.
National Bank of Arizona does not prominently publish one universal consumer email address for all retail-banking questions.
Banking, Financial Services, Commercial Lending, Consumer Banking, Treasury Management, Mortgage Lending and Private Banking
1984 in Tucson, Arizona.
Division of Zions Bancorporation, N.A.
Zions Bancorporation operated with approximately $89 billion in total assets at December 31, 2025.
Mark Stebbings
President and Chief Executive Officer of National Bank of Arizona.
Corporate public walk-in hours are not prominently published. Branch and department hours vary.
https://careers.nbarizona.com/
Parent Investor Relations
https://zionsbancorporation.com/overview/
National Bank of Arizona provides personal checking options for everyday banking, payments, debit-card use, direct deposits, and account management. Account features and fees depend on the specific product selected.
Customers can use savings products for emergency funds, short-term goals, and general cash reserves. Available interest rates, balance requirements, and account terms vary by product.
NB|AZ offers time-deposit products for customers who want fixed-term savings. CD rates and maturity periods change based on market conditions and selected terms.
The bank provides consumer lending through its branch and relationship-banking network. Current career materials confirm that personal bankers may originate and close consumer loans as part of normal branch services.
National Bank of Arizona offers residential mortgage services and currently recruits dedicated Mortgage Loan Officers for Arizona. Mortgage products can support home purchases, refinancing, and qualifying residential borrowing needs.
Small-business services include deposit accounts, lending, treasury-management solutions, merchant services, and other banking tools intended for local companies and entrepreneurs.
NB|AZ provides relationship-based commercial banking for Arizona businesses. Services include commercial loans, deposit accounts, working-capital solutions, and customized banking support for middle-market companies.
Commercial real-estate lending remains an important part of the bank’s business. Teams support property financing, commercial loan structuring, documentation, underwriting, and portfolio management.
Treasury Management includes cash-management, electronic payments, account services, liquidity tools, and operational support for business customers.
Merchant Services helps qualifying businesses process customer payments and integrate payment acceptance into their broader banking relationship. It is part of the bank’s Treasury Management offering.
National Bank of Arizona’s Treasury Management organization includes foreign-exchange services for qualifying commercial clients with international payment or currency needs.
Private Banking serves clients requiring higher-touch financial relationships, customized deposit and lending solutions, and coordinated banking support.
Customers can use digital banking tools to monitor accounts, transfer money, review activity, manage qualifying services, and perform routine banking transactions remotely.
No separate universal corporate switchboard is prominently published.
Verified Client Services
888-241-5550
No separate verified headquarters-only number is publicly promoted.
Use Client Services
888-241-5550
For normal customer routing
888-241-5550
888-241-5550.
888-241-5550
888-241-5550
888-241-5550
tmclientservices@nbarizona.com.
866-761-8349
This number appears on National Bank of Arizona’s secure new-account application platform.
The bank does not publish one universal sales number. Business, mortgage, treasury, and private-banking sales are handled through local relationship teams and branches.
Not applicable as a conventional billing department. Loan-payment and account-payment questions should use the applicable loan or account servicing channel.
No single universal regional-office number is published.
Each branch has its own local contact information through the NB|AZ branch locator.
No universal international customer-service number is prominently published.
No general corporate emergency line is publicly promoted. Customers with suspected fraud should use the bank’s verified support channels promptly and follow instructions associated with the affected account or payment card.
National Bank of Arizona does not maintain separate public Investor Relations.
Parent company Zions Bancorporation
888-307-3411
investor@zionsbancorp.com.
No permanent current NB|AZ media phone number is prominently published on the current consumer contact page.
Applicant accommodation support through Zions
801-844-7618
careers@zionsbancorp.com.
Not applicable.
For most banking questions, begin with 888-241-5550 during Client Services hours, Monday through Friday from 7:00 AM to 6:00 PM Mountain Standard Time. Have your account type, relevant transaction date, last four digits or other permitted account-identification information, branch name, and any existing case information ready. Never provide online-banking passwords or one-time security codes to an unsolicited caller.
For account-opening, teller, consumer-loan, local service, or relationship issues, a branch banker may be the fastest route because National Bank of Arizona operates under a locally managed community-banking model. Commercial and business customers should use their relationship manager or Treasury Management Client Services, particularly when the issue involves wires, electronic payments, merchant services, account servicing, or business fraud.
If a normal representative cannot resolve the issue, request supervisor review and ask that the complaint be documented. Customers with commercial or private-banking relationships should also notify their assigned banker, because those teams can coordinate with loan operations, treasury, fraud, credit, and other internal departments.
Complaints may involve account servicing, deposits, unauthorized transactions, lending, mortgage issues, fees, branch service, digital banking, commercial accounts, fraud, or customer treatment. Before escalating, gather statements, transaction details, account correspondence, loan documents, screenshots, branch information, names of prior representatives, and any existing case numbers.
Call 888-241-5550 and explain the complaint clearly. Provide only the information needed to identify the account and transaction, and ask the representative to document the matter. If the issue concerns a specific charge, transfer, deposit, or loan payment, provide the exact date, amount, and relevant account type so the bank can investigate efficiently.
Use the department associated with the problem. Treasury Management customers should use 888-241-5550 and tmclientservices@nbarizona.com, mortgage borrowers should contact their mortgage-servicing channel, and branch-related complaints should be raised with the branch manager. Specialized routing reduces the risk that a complaint will remain with a department that cannot resolve it.
If the first contact cannot resolve the issue, ask for escalation to a supervisor, branch manager, relationship manager, or other appropriate banking leader. Provide your prior case details and a concise timeline. If the issue involves suspected fraud, unauthorized transactions, or identity theft, make clear that it is a security concern so the bank can route it to fraud investigators or risk personnel.
Submit a written complaint through the appropriate secure message, account-service channel, or department email where available. Written complaints should include the issue, dates, amounts, previous contacts, supporting documents, and the resolution requested. Do not send full Social Security numbers, passwords, or other unnecessary sensitive credentials through ordinary email.
For serious unresolved matters, correspondence can be directed to National Bank of Arizona’s Biltmore Corporate Office, 6001 N. 24th Street, Phoenix, AZ 85016. Include copies of relevant documents, prior case information, and a clear chronology. Keep proof of mailing and retain the originals of important banking records.
Fraud, mortgage-servicing, treasury-management, credit, or commercial-loan disputes should be handled through the specialized team responsible for that product. National Bank of Arizona is part of Zions Bancorporation, N.A., so enterprise fraud, compliance, legal, and servicing functions may become involved when the complaint requires investigation beyond local branch authority.
Because National Bank of Arizona operates as a division of Zions Bancorporation, N.A., banking complaints may fall within the jurisdiction of federal banking regulators such as the Office of the Comptroller of the Currency, depending on the issue. Deposit-insurance questions may involve the FDIC, while certain consumer-financial matters may also fall within CFPB jurisdiction. Use the regulator appropriate to the exact complaint rather than filing indiscriminately.
Customers can consider the Consumer Financial Protection Bureau for qualifying consumer-finance complaints, a state Attorney General for applicable consumer matters, or the payment-card dispute process for qualifying card transactions. Credit-reporting disputes should also be raised directly with the appropriate credit bureau and information furnisher when relevant.
If a significant financial dispute remains unresolved after internal and regulatory escalation, review the deposit agreement, loan agreement, cardholder agreement, mortgage documents, or other governing contract. Those documents determine whether arbitration, mediation, litigation, or another dispute-resolution procedure applies. For substantial losses or complex commercial matters, independent legal advice may be appropriate.
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