Gassman Baiamonte Gruner, P.C.
Gassman Baiamonte Gruner, P.C. is a Garden City, New York matrimonial and family law firm founded in 1968, serving individuals and families in Nassau, Suffolk, and the greater NY metro area with divorce, custody, equitable distribution, and appellate representation via 9 attorneys.
- Company typePrivate
- Founded1968
- HeadquartersGarden City, United States
- Headcount11–50
- GTM typeB2C
- OfferingServices
What Gassman Baiamonte Gruner, P.C. does
Gassman Baiamonte Gruner, P.C. is a Garden City, New York-based matrimonial and family law firm founded in 1968 that has operated continuously for over 55 years as an exclusive specialty practice. The firm serves individuals and families across Long Island (Nassau and Suffolk Counties) and the greater New York Metropolitan area, handling divorce, marital agreements, equitable distribution, child custody and support, appeals and modifications, and collaborative law matters. The team comprises three named partners (Stephen Gassman, Rosalia Baiamonte, Joshua Gruner), three associates (Byron Chou, Dari Last, Bradley Kahen), and two of counsel attorneys (Timothy Tippins, Karen Bodner), with multilingual coverage in Italian, Mandarin Chinese, Taiwanese, Farsi, and Hebrew.
The firm operates without proprietary technology products, relying on standard case management tools, financial and forensic accounting resources (including a referral network of business valuators and forensic accountants), and court electronic filing systems to deliver services. Its core practice is organized around six published service areas: matrimonial law, marital agreements, equitable distribution, child custody and support, divorce appeals and modifications, and collaborative law. The firm is recognized for its appellate practice and credentials, including multiple Fellows of the American Academy of Matrimonial Lawyers, Best Lawyers in America listings, and senior partner Stephen Gassman's AV Preeminent Rating since 1981.
The firm generates revenue exclusively through professional services fees billed on attorney time or matter-specific arrangements, with no public pricing disclosure and no third-party distribution channels. Go-to-market is sales-led, driven by direct attorney-client engagement, professional referrals, bar association networks, and word-of-mouth. Marketing activity consists of bar association leadership, CLE lecturing, and legal authorship rather than paid advertising. The firm is a privately held professional corporation owned by its partner-attorneys with no venture, private equity, or institutional investment ownership.
Gassman Baiamonte Gruner, P.C. firmographics
Firmographics- Name
- Gassman Baiamonte Gruner, P.C.
- Legal name
- Gassman Baiamonte Gruner, P.C.
- Website
- https://nydivlaw.com
- Company type
- Private
- Founded year
- 1968
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Gassman Baiamonte Gruner, P.C. is a Garden City, New York matrimonial and family law firm founded in 1968, serving individuals and families in Nassau, Suffolk, and the greater NY metro area with divorce, custody, equitable distribution, and appellate representation via 9 attorneys.
- Ownership category
- akta.pro rank
Gassman Baiamonte Gruner, P.C. industry classification
Industry- Product category
- Matrimonial and Family Law
- NAICS
- Offices of Lawyers (541110), Offices of Lawyers (54111)
- SIC
- Services-Legal Services (8111)
- akta.pro primary industry
- Family & Private Client (Trusts & Estates) Law (BPAHAAAK)
Keywords
Where Gassman Baiamonte Gruner, P.C. is headquartered
LocationHeadquarters
- HQ city
- Garden City
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Gassman Baiamonte Gruner, P.C. business model
Business model- GTM type
- B2C
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales
Revenue model
- Legal Services Fees: Revenue generated from legal representation in matrimonial and family law matters including divorce proceedings, custody disputes, equitable distribution, marital agreements, and appellate practice. Services billed on attorney time or flat fee arrangements for specific matters.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Other | Attorney legal services - fee arrangements vary by matter |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels4 records
Gassman Baiamonte Gruner, P.C. product offering
Product offeringCore offering
The firm provides legal representation exclusively in matrimonial and family law matters, including divorce proceedings, pre/post-nuptial and separation agreements, equitable distribution of marital property, child custody and support disputes, appellate practice, and collaborative law alternatives. It serves individuals and families in Nassau County, Suffolk County, and the Greater New York Metropolitan area through a team of attorneys devoted entirely to this specialty.
Product overview
Gassman Baiamonte Gruner, P.C. is a matrimonial and family law firm offering comprehensive legal services for divorce and family law matters. The firm provides six core practice areas: Matrimonial Law Services (divorce, legal separation, dissolution), Marital Agreements (pre-nuptial, post-nuptial, separation agreements), Equitable Distribution (division of marital property under New York law), Child Custody and Support, Divorce Appeals and Modifications, and Collaborative Law. The firm serves clients in Nassau County, Suffolk County, and the greater New York Metropolitan area, with attorneys fluent in Italian, Mandarin Chinese, and Taiwanese.
Differentiator
Problem solved
Functional benefit
Products and services
- Matrimonial Law Services Full-service divorce and matrimonial law representation including legal separation, dissolution of marriage, and post-divorce modifications for individuals and families.
- Marital Agreements Drafting and negotiation of pre-marital agreements, post-marital agreements, and separation agreements to clarify property rights and financial arrangements.
- Equitable Distribution Legal counsel on division of marital property including businesses, professional practices, real estate, and assets under New York State's equitable distribution rules.
- Child Custody and Support Representation in child custody disputes, visitation rights, and child support proceedings focused on the best interest of the child.
- Divorce Appeals and Modifications Appellate representation and modification proceedings for divorce judgments when circumstances change or errors occur.
- Collaborative Law Alternative dispute resolution process where parties resolve matrimonial issues amicably with specially trained attorneys without litigation.
Quantifiable outcome
- Established as Greater New York's premier matrimonial and family law firm with over 55 years of continuous operation
Companies that use Gassman Baiamonte Gruner, P.C.
Customer profileNamed customers2 records
Segments3 records
Ideal customer profiles3 records
Gassman Baiamonte Gruner, P.C. technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Gassman Baiamonte Gruner, P.C. partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Financial Professionals NetworksupportingThe firm collaborates with a network of financial specialists including forensic accountants, business valuators, accountants, and court-appointed appraisers to assist in determining fair value of marital property, business valuations, and uncovering hidden assets in equitable distribution matters.
Scale indicators3 records
Recent moves6 records
Expansion highlights4 records
Gassman Baiamonte Gruner, P.C. competitors and assessment
Company assessmentDirect peers
- Warshaw Burstein Cohen Schlesinger & Silvers: Established New York law firm with a matrimonial and family law practice serving affluent clients in complex divorce and custody matters — directly comparable in client profile and matter complexity.
- Bikel & Schilling LLC: Boutique New York matrimonial and family law firm specializing exclusively in high-stakes divorce, custody, and family law matters for affluent clients — directly comparable boutique specialization and exclusive matrimonial focus.
- Davidoff Hutcher & Citron LLP: Full-service New York law firm with a dedicated matrimonial and family law group serving clients in NYC and Long Island, offering similar services including divorce, custody, and high-net-worth representation — directly overlapping practice area and geography.
- Bressler, Amery & Ross, P.C. Established New York-based law firm with a prominent matrimonial and family law practice serving high-net-worth individuals across the NY metro area, including complex equitable distribution and custody matters — directly comparable client base and service scope to GBG.
- Phillips Nizer LLP: Mid-sized New York law firm with a notable matrimonial practice serving affluent individuals in divorce, custody, and prenuptial agreement matters — directly comparable clientele and geographic overlap.
- Schlesinger & Buchbinder (now part of SB2 Family Law): Long Island matrimonial and family law firm serving Nassau and Suffolk counties with comparable client demographics and practice scope, including high-net-worth representation and family law matters.
- Golenbock Eiseman Assor Bell & Peskoe LLP: Manhattan-based law firm with a notable matrimonial and family law practice representing high-net-worth individuals in divorce, custody, and prenuptial agreements — closely comparable target clientele and case complexity.
Broad incumbents
- Skadden, Arps, Slate, Meagher & Flom LLP: Major global law firm with a family law practice representing ultra-high-net-worth individuals in complex matrimonial matters — overlapping at the top end of GBG's market with much broader service offerings.
- McGuireWoods LLP: National law firm with a dedicated matrimonial and family law practice representing high-net-worth clients in complex divorce and custody litigation — comparable client sophistication with broader geographic and practice coverage.
- Blank Rome LLP: Large national Am Law firm with a matrimonial and family law group serving high-net-worth clients in NYC and beyond — broader portfolio but overlapping capability for affluent matrimonial matters.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat4 records
Key risks7 records
Key highlights7 records
Customer concentration
Gassman Baiamonte Gruner, P.C. social profiles
Digital presenceGassman Baiamonte Gruner, P.C. financial estimates
Financial estimateRevenue estimate
Valuation estimate
Gassman Baiamonte Gruner, P.C. leadership team
Management profileNumber of profiles
Profiles8 records
Gassman Baiamonte Gruner, P.C. funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Gassman Baiamonte Gruner, P.C. M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Gassman Baiamonte Gruner, P.C.
What does Gassman Baiamonte Gruner, P.C. do?
The firm provides legal representation exclusively in matrimonial and family law matters, including divorce proceedings, pre/post-nuptial and separation agreements, equitable distribution of marital property, child custody and support disputes, appellate practice, and collaborative law alternatives. It serves individuals and families in Nassau County, Suffolk County, and the Greater New York Metropolitan area through a team of attorneys devoted entirely to this specialty.
Is Gassman Baiamonte Gruner, P.C. a public or private company?
Gassman Baiamonte Gruner, P.C. is a private company. It is classified as management employee owned and is currently operating.
When was Gassman Baiamonte Gruner, P.C. founded?
Gassman Baiamonte Gruner, P.C. was founded in 1968. It employs 11 to 50 people.
Where is Gassman Baiamonte Gruner, P.C. based?
Gassman Baiamonte Gruner, P.C. is headquartered in Garden City, United States, in the North America region.
How does Gassman Baiamonte Gruner, P.C. make money?
One revenue line is on record: legal Services Fees.
Who are Gassman Baiamonte Gruner, P.C.'s main competitors?
Direct peers on record are Warshaw Burstein Cohen Schlesinger & Silvers, Bikel & Schilling LLC, Davidoff Hutcher & Citron LLP, Bressler, Amery & Ross, P.C., Phillips Nizer LLP, Schlesinger & Buchbinder (now part of SB2 Family Law) and Golenbock Eiseman Assor Bell & Peskoe LLP. Broad incumbents are Skadden, Arps, Slate, Meagher & Flom LLP, McGuireWoods LLP and Blank Rome LLP.
Does Gassman Baiamonte Gruner, P.C. have an API?
No public API is recorded for Gassman Baiamonte Gruner, P.C..
What industry is Gassman Baiamonte Gruner, P.C. in?
Gassman Baiamonte Gruner, P.C.'s product category is Matrimonial and Family Law. Its primary akta.pro industry code is BPAHAAAK, Family & Private Client (Trusts & Estates) Law. Its NAICS code is 541110 and its SIC code is 8111.