John Halvonik

15200 Shady Grove Rd Ste 202, Rockville, MD 20850

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9210 Corporate Blvd, Rockville, MD

Phone not listed

9210 Corporate Blvd, Rockville, MD

Phone not listed

9200 Corporate Blvd Ste 480, Rockville, MD

Workers' Comp

2401 Research Blvd Ste 308, Rockville, MD

2400 Research Blvd, Rockville, MD

Employment

15245 Shady Grove Rd Ste 300, Rockville, MD

Employment

Source: Overture Maps (Apache-2.0, CDLA-Permissive-2.0). Last updated 2026-09-26.