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| Company | Location | County | Certifications | License # |
|---|---|---|---|---|
| M. Alyssa Rusiecki | Rivers, MA | — | Inspector | 247 |
| M. Alyssa Rusiecki | Three Rivers, MA | — | Designer | 2107 |
| Mackenzie Maloney | — | — | Inspector | 14845 |
| Madalena Diniz | Holyoke, MA | — | DesignerInspector | 14108 |
| Manuel Santos | — | — | Inspector | 616 |
| Marc A. LeVasseur | Pittsfield, MA | — | Designer | 2779 |
| Marc D. Cardinal | — | — | Inspector | 33 |
| Marc D. Cardinal | Berkley, MA | — | Designer | 321 |
| Marc Del Grande | Hinsdale, MA | — | DesignerInspector | 14398 |
| Marc Durocher | — | — | Inspector | 13921 |
| Marc Gabriel | Boston, MA | — | Designer | 2879 |
| Marc J. Tisdelle | Freetown, MA | — | Inspector | 11930 |
| Marc J. Tisdelle | East Freetown, MA | — | Designer | 2847 |
| Marc N. Nyberg | North Smithfield, RI | — | Designer | 1760 |
| Marcia J. Berger | — | — | Inspector | 768 |
| Marcia J. Berger | Sudbury, MA | — | Designer | 4153 |
| Marco L. Bangrazi | — | — | Inspector | 15132 |
| Marcus Millett | — | — | Inspector | 13748 |
| Margaret Bacon | Douglas, MA | — | Designer | 2857 |
| Margaret Coe | Plymouth, MA | — | DesignerInspector | 14489 |
| Margaret Goldstein | — | — | Inspector | 15129 |
| Margaret J. Laracy | South Weymouth, MA | — | Designer | 14613 |
| Margaret Juneau | Wareham, MA | — | DesignerInspector | 14179 |
| Marie Rausch | Watertown, MA | — | Designer | 14880 |
| Mario Grasselli | — | — | Inspector | 14217 |
| Mario Rosa | — | — | Inspector | 13470 |
| Marissa Kelly | Providence, RI | — | Designer | 14222 |
| Marissa Sewell | Reading, MA | — | Designer | 14961 |
| Mark A. Oram | — | — | Inspector | 4895 |
| Mark A. Oram | Marlborough, MA | — | Designer | 1814 |
| Mark A. Rodrigues | Fall River, MA | — | Designer | 2067 |
| Mark A. Sleger | Woburn, MA | — | Designer | 2260 |
| Mark Bannon | — | — | Inspector | 4979 |
| Mark Cottrell | — | — | Inspector | 4549 |
| Mark Cottrell | Haverhill, MA | — | Designer | 12297 |
| Mark D. Taylor | Easton, MA | — | Inspector | 4475 |
| Mark D. Taylor | North Easton, MA | — | Designer | 13260 |
| Mark Dibb | Marston Mills, MA | — | Designer | 2753 |
| Mark E. Allen | Mendon, MA | — | Designer | 17 |
| Mark E. Beaudry | — | — | Inspector | 4844 |
| Mark E. Beaudry | Gill, MA | — | Designer | 117 |
| Mark E. Lancor, Pe | — | — | Inspector | 15150 |
| Mark E. McConkey | — | — | Inspector | 3063 |
| Mark Elbag, Jr. | Rutland, MA | — | DesignerInspector | 12682 |
| Mark F. Piermarini | Fitchburg, MA | — | Designer | 1936 |
| Mark F. Tolman | — | — | Inspector | 13612 |
| Mark Farrell | — | — | Inspector | 261 |
| Mark Farrell | Sturbridge, MA | — | Designer | 707 |
| Mark G. Irving | — | — | Inspector | 2776 |
| Mark H. Gates | — | — | Inspector | 9309 |
| Mark H. Gates | Hopkinton, MA | — | Designer | 851 |
| Mark J. Nardone | — | — | Inspector | 3895 |
| Mark M. Flaherty | Plymouth, MA | — | Designer | 765 |
| Mark M. Santora | Grafton, MA | — | Inspector | 2823 |
| Mark M. Santora | North Grafton, MA | — | Designer | 2138 |
| Mark M. Zambernardi | Georgetown, MA | — | Designer | 2669 |
| Mark Mariano | Rehoboth, MA | — | DesignerInspector | 13448 |
| Mark Mooney | Franklin, MA | — | Designer | 14347 |
| Mark Moschetti | — | — | Inspector | 12861 |
| Mark P. Johnson | Worcester, MA | — | Designer | 1138 |
| Mark P. Reed | Southampton, MA | — | Designer | 2015 |
| Mark Polselli | — | — | Inspector | 4082 |
| Mark Polselli | Eastham, MA | — | Designer | 2912 |
| Mark Pricer | Natick, MA | — | Designer | 15191 |
| Mark R. Arnold | Auburn, MA | — | Designer | 14414 |
| Mark R. Johnson | — | — | Inspector | 15013 |
| Mark R. Magowan | Marshfield, MA | — | Designer | 1455 |
| Mark Rits | Middleboro, MA | — | Designer | 13498 |
| Mark Rogers | — | — | Inspector | 14635 |
| Mark Ruberti | Malden, MA | — | Designer | 14152 |
| Mark S. Bartlett | — | — | Inspector | 1131 |
| Mark S. Bartlett | Naples, FL | — | Designer | 98 |
| Mark S. Carson | Marlborough, MA | — | Inspector | 2557 |
| Mark S. Haley | — | — | Inspector | 1556 |
| Mark S. Haley | Grandby, MA | — | Designer | 983 |
| Mark Smith | — | — | Inspector | 13819 |
| Mark Stadnicki | Chicopee, MA | — | Designer | 13884 |
| Mark T. Thompson | — | — | Inspector | 3588 |
| Mark T. Thompson | Chesterfield, MA | — | Designer | 2436 |
| Mark T. Whalen | North Attleboro, MA | — | Designer | 13707 |
| Mark Tolman | Sandown, NH | — | Designer | 13684 |
| Mark Yourell | — | — | Inspector | 15149 |
| Martin R. Donoghue | — | — | Inspector | 259 |
| Martin R. Donoghue | Harwich, MA | — | Designer | 602 |
| Marybeth McKenzie | Barnstable, MA | — | Designer | 12755 |
| Mathew A. Waterman | Groton, MA | — | Inspector | 3930 |
| Mathew A. Waterman | West Groton, MA | — | Designer | 2552 |
| Mathew Callahan | Bridgewater, MA | — | DesignerInspector | 14798 |
| Mathieu Rebello | Dennis, MA | — | Inspector | 14140 |
| Matthew Armendo | Mattapoisett, MA | — | DesignerInspector | 13480 |
| Matthew Armstrong | — | — | Inspector | 15126 |
| Matthew Bombaci | Wesborough, MA | — | Designer | 12732 |
| Matthew Bracci | — | — | Inspector | 4968 |
| Matthew Brennan | Taunton, MA | — | Designer | 12766 |
| Matthew Brown | — | — | Inspector | 5010 |
| Matthew Brown | — | — | Inspector | 13917 |
| Matthew C. Leone | Mattapoisett, MA | — | Designer | 13265 |
| Matthew Collins | Bridgewater, MA | — | Designer | 14611 |
| Matthew Cote | — | — | Inspector | 14915 |
| Matthew Dow | Acton, MA | — | Designer | 13797 |
| Matthew Dusenberry | Nashua, NH | — | Designer | 14052 |
| Matthew Fortier | Orange, MA | — | DesignerInspector | 14487 |
| Matthew Frappier | — | — | Inspector | 13650 |
| Matthew Gilfoy | — | — | Inspector | 13640 |
| Matthew J. Dodson | Boston, MA | — | Designer | 14908 |
| Matthew J. Vacca | — | — | Inspector | 14878 |
| Matthew J. Zirolli | Medford, MA | — | Designer | 14562 |
| Matthew Kampersal | — | — | Inspector | 14086 |
| Matthew Kilpatrick | Foxboro, MA | — | Designer | 15021 |
| Matthew L. Zieminski | — | — | Inspector | 14478 |
| Matthew M. Ashley | Southboro, MA | — | Designer | 14269 |
| Matthew McGuirk | — | — | Inspector | 5017 |
| Matthew McLaughlin | — | — | Inspector | 15148 |
| Matthew Mui | Randolph, MA | — | Designer | 14259 |
| Matthew Parker | Bluffs, MA | — | Inspector | 14449 |
| Matthew R. Bernard | Fitchburg, MA | — | DesignerInspector | 14051 |
| Matthew R. Dow | — | — | Inspector | 13718 |
| Matthew R. Frye | — | — | Inspector | 13849 |
| Matthew Rabasco | Worcester, MA | — | Designer | 15029 |
| Matthew Robinson | — | — | Inspector | 4992 |
| Matthew S. Barry | Holliston, MA | — | Designer | 13874 |
| Matthew Stangle | Westford, MA | — | Designer | 14395 |
| Matthew Steinel | Kingston, NH | — | Designer | 13264 |
| Matthew T. Farrell | — | — | Inspector | 3478 |
| Matthew T. Farrell | Brewster, MA | — | Designer | 716 |
| Matthew Tanis | Taunton, MA | — | DesignerInspector | 13159 |
| Matthew Walsh | Hamilton, MA | — | Inspector | 14704 |
| Maureen Herald | Dracut, MA | — | Designer | 13578 |
| Maureen M. Finlay | Brewster, MA | — | Designer | 746 |
| Maureen O'Reilly | Greenfield, MA | — | DesignerInspector | 15075 |
| Max R. Antes Jr | Deerfield, MA | — | Inspector | 14513 |
| Max Regan | Chelmsford, MA | — | Designer | 15035 |
| McKenzie Falker | Rochdale, MA | — | DesignerInspector | 14579 |
| Meegan Anderson | Edgartown, MA | — | DesignerInspector | 14110 |
| Megan Dutra | Bridgewater, MA | — | Designer | 14422 |
| Megan Leary | Walpole, MA | — | DesignerInspector | 14766 |
| Megan Moselsky | Foxboro, MA | — | Designer | 14890 |
| Megan Tudryn | — | — | Inspector | 14860 |
| Megan Tudryn | Greenfield, MA | — | Designer | 14969 |
| Melanie T. Dineen | Beverly, MA | — | DesignerInspector | 14377 |
| Melissa L. Davis | Hillsborough, NH | — | Designer | 13679 |
| Melissa McInnis | — | — | Inspector | 14506 |
| Melissa Ranieri | Lincoln, RI | — | Designer | 13808 |
| Melissa Recos | Hopkinton, MA | — | Designer | 14228 |
| Meredith Ballinger | Harwich, MA | — | Designer | 14882 |
| Micah Blondeau | Leominster, MA | — | DesignerInspector | 14590 |
| Michael A. Tetreault | — | — | Inspector | 1963 |
| Michael A. Trowbridge | Mansfield, MA | — | Designer | 2474 |
| Michael Andrade | — | — | Inspector | 4658 |
| Michael Andrade | Sutton, MA | — | Designer | 2681 |
| Michael Avila | Sandwich, MA | — | DesignerInspector | 14889 |
| Michael Barcelos | — | — | Inspector | 14857 |
| Michael Berberian | — | — | Inspector | 3771 |
| Michael Berberian | Webster, MA | — | Designer | 141 |
| Michael Bonenfant | — | — | Inspector | 13673 |
| Michael Boudreau | Worcester, MA | — | Designer | 3053 |
| Michael Bowen | Westfield, MA | — | Designer | 15076 |
| Michael C. Laham | Brentwood, NH | — | Designer | 13701 |
| Michael Capachietti | Saugus, MA | — | Designer | 13939 |
| Michael D'Agostino | — | — | Inspector | 3984 |
| Michael Dean | — | — | Inspector | 2792 |
| Michael Dean | Upton, MA | — | Designer | 537 |
| Michael Devine | — | — | Inspector | 13914 |
| Michael DiBuono | — | — | Inspector | 14646 |
| Michael E. Russell | Middleboro, MA | — | Designer | 2112 |
| Michael Edwards | — | — | Inspector | 14984 |
| Michael Edwards | Bridgewater, MA | — | Designer | 15019 |
| Michael Funaiole | Concord, MA | — | DesignerInspector | 14861 |
| Michael G. Mocko, Jr. | Springs, CT | — | Inspector | 11305 |
| Michael G. Mocko, Jr. | Stafford Springs, CT | — | Designer | 1654 |
| Michael Greene | Burlington, MA | — | Designer | 15170 |
| Michael Hale | — | — | Inspector | 4312 |
| Michael Hale | Gloucester, MA | — | Designer | 980 |
| Michael Hassett | Wrentham, MA | — | DesignerInspector | 13721 |
| Michael J. Angieri | — | — | Inspector | 1113 |
| Michael J. Angieri | Needham, MA | — | Designer | 34 |
| Michael J. Beausoleil | — | — | Inspector | 17 |
| Michael J. Borselli | Falmouth, MA | — | Designer | 210 |
| Michael J. Carter | Wilmington, MA | — | Designer | 340 |
| Michael J. DiModica, Iii | Sudbury, MA | — | Designer | 578 |
| Michael J. Juliano | Lynnfield, MA | — | Designer | 1168 |
| Michael J. Koska | Bridgewater, MA | — | Designer | 1260 |
| Michael J. Ostrowski | North Billerica, MA | — | Designer | 14163 |
| Michael J. Sullivan | Northboro, MA | — | Designer | 2374 |
| Michael J. Votruba | Rutland, MA | — | Designer | 13790 |
| Michael Joyce | Braintree, MA | — | Designer | 2893 |
| Michael Linton | — | — | Inspector | 14992 |
| Michael Masone | — | — | Inspector | 14576 |
| Michael McCary | Cambridge, MA | — | Designer | 15099 |
| Michael McKernan | — | — | Inspector | 15052 |
| Michael Mendez | Sutton, MA | — | DesignerInspector | 14200 |
| Michael N. Pare | — | — | Inspector | 3960 |
| Michael O. Theroux | Agawam, MA | — | DesignerInspector | 14361 |
| Michael O'Loughlin | — | — | Inspector | 577 |
| Michael O'Loughlin | Yarmouthport, MA | — | Designer | 1790 |
| Michael P. Butler | Athol, MA | — | Designer | 14362 |
| Michael P. DiBenedetto | Raynham, MA | — | Designer | 13882 |
| Michael P. Smith | — | — | Inspector | 14492 |
| Michael P. Soraghan | — | — | Inspector | 1071 |
| Michael P. Soraghan | Bradford, MA | — | Designer | 2285 |
| Michael P. Wall | — | — | Inspector | 13233 |
| Michael P. Wall | Stamford, VT | — | Designer | 14364 |
| Michael Paige | Tewksbury, MA | — | Designer | 13167 |
| Michael Pimentel | East Wareham, MA | — | Designer | 1943 |
| Michael R. Marvelle | — | — | Inspector | 14869 |
| Michael R. Petrin | — | — | Inspector | 4804 |
| Michael R. Petrin | Springfield, MA | — | Designer | 1919 |
| Michael S. Faria | Somerset, MA | — | Designer | 708 |
| Michael S. Kulig | — | — | Inspector | 14676 |
| Michael S. Kulig | Lee, MA | — | Designer | 1282 |
| Michael Seager | Northboro, MA | — | DesignerInspector | 14781 |
| Michael Sears | Yarmouth, MA | — | Inspector | 14430 |
| Michael Soares | Raynham, MA | — | DesignerInspector | 15008 |
| Michael Strazzula | — | — | Inspector | 14995 |
| Michael T. Bisienere | Falmouth, MA | — | Inspector | 3938 |
| Michael Tortora | Middleboro, MA | — | Designer | 14600 |
| Michelle Callahan | Boston, MA | — | Designer | 13898 |
| Michelle Powell | Leominster, MA | — | DesignerInspector | 14400 |
| Michelle Regon | Middleborough, MA | — | Designer | 14405 |
| Mikael A. Lassila | Rindge, NH | — | Designer | 1327 |
| Mira Kedees | Seekonk, MA | — | Designer | 14816 |
| Mishel Caisapanta | Leicester, MA | — | Designer | 14383 |
| Mollie Scott | Quincy, MA | — | Designer | 15194 |
| Momin K. Uddin | — | — | Inspector | 13389 |
| Monasia Ceasar | Springfield, MA | — | Designer | 14911 |
| Morgan Cardoso | Mashpee, MA | — | DesignerInspector | 14738 |
| Morgan Seale | Chelmsford, MA | — | Designer | 15181 |
| Myles Killar | Concord, MA | — | Designer | 13585 |
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