| Dr. Martin MacKinnon Professional Corporation | — | 622921 | — | Active | — |
| DR. MARTIN ROUSSY C.P. INC. | — | 724819 | — | Active | — |
| Dr. Martine Melanson P.C. Inc. | — | 706034 | — | Active | — |
| DR. MARWA FAGIR PROFESSIONAL CORPORATION | — | 755814 | — | Active | — |
| Dr. Mary Ann Wiseman Professional Corporation | — | 49425 | — | Merged | — |
| DR. MARY C. MCCREA PROF. CORP. | — | 504825 | — | Active | — |
| Dr. Mary E. Jarratt Professional Corporation | — | 604646 | — | Active | — |
| DR. MARYNA POGOSYAN PSYCHIATRY P.C. INC. | — | 651807 | — | Withdrawn | — |
| Dr. Maryse Tadros Professional Corporation | — | 706512 | — | Withdrawn | — |
| Dr. Maryse Williston Professional Corporation | — | 667673 | — | Active | — |
| Dr. Marzyeh Moazenzadeh Professional Corporation | — | 768805 | — | Active | — |
| Dr. Mathew Bligh Professional Corporation | — | 714006 | — | Active | — |
| Dr. Mathias Losier C.P. Inc. | — | 713814 | — | Active | — |
| Dr. Mathieu Bélanger Professional Corporation | — | 652385 | — | Dissolved | — |
| Dr. Mathieu Hébert P.C. Inc. | — | 658378 | — | Active | — |
| Dr. Mathieu Morin Professional Corporation | — | 767830 | — | Active | — |
| Dr. Matt Piamonte Professional Corporation | — | 690171 | — | Active | — |
| Dr. Matthew Acker Professional Corporation | — | 683240 | — | Active | — |
| Dr. Matthew Bradshaw Professional Corporation | — | 678140 | — | Merged | — |
| Dr. Matthew Bradshaw Professional Corporation | — | 678466 | — | Active | — |
| Dr. Matthew Forgie Professional Corporation | — | 772995 | — | Active | — |
| Dr. Matthew Grabove Professional Corporation | — | 649746 | — | Withdrawn | — |
| Dr. Matthew Kenney Professional Corporation | — | 724896 | — | Active | — |
| Dr. Matthew McClure Inc. | — | 741396 | — | Active | — |
| DR. MATTHEW MOORE PROFESSIONAL CORPORATION | — | 661357 | — | Active | — |
| Dr. Matthew Moore Professional Corporation | — | 660967 | — | Merged | — |
| Dr. Matthew Murphy Professional Corporation Inc. | — | 762396 | — | Active | — |
| Dr. Matthew Park Professional Corporation Inc. | — | 695509 | — | Merged | — |
| Dr. Matthew Park Professional Corporation Inc. | — | 699902 | — | Active | — |
| Dr. Matthew R. Greer Professional Corporation | — | 657178 | — | Active | — |
| Dr. Matthew Sheppard Professional Corporation | — | 700593 | — | Active | — |
| Dr. Matthew Steeves Dentistry | — | 733555 | — | Active | — |
| DR. MATTHEW TUCKER MEDICINE PROFESSIONAL CORPORATION | — | 706311 | — | Withdrawn | — |
| Dr. Matthew Vandenberg Professional Corporation | — | 703353 | — | Active | — |
| Dr. Matthieu Gaudet Corporation Professionnelle Inc. | — | 655683 | — | Active | — |
| Dr. Matthieu Poirier PC Inc. | — | 704707 | — | Active | — |
| Dr. Maureen Gatchalian Thurrott Professional Corporation | — | 682030 | — | Active | — |
| DR. MAURICE P. ROY P. C. INC. | — | 605537 | — | Active | — |
| Dr. Maxan Professional Corporation | — | 757432 | — | Active | — |
| Dr. MC Lamoureux C.P. Inc. | — | 668154 | — | Dissolved | — |
| DR. MCGREGOR'S CRITTER CARE VETERINARY HOSPITAL | — | 341012 | — | Dissolved | — |
| Dr. MD Hayat Mahmud, Family Physician | — | 755525 | — | Active | — |
| Dr. Meagan Patterson P.C. Inc. | — | 747073 | — | Active | — |
| Dr. Meaghan O'Brien Professional Corporation | — | 677303 | — | Active | — |
| DR. MEDARD BERUBE CORPORATION PROFESSIONNELLE INC. | — | 56557 | — | Dissolved | — |
| Dr. Meena Natarajan Medical services | — | 665523 | — | Dissolved | — |
| DR. MEGAN SIPPRELL PROFESSIONAL CORPORATION | — | 671593 | — | Active | — |
| Dr. Meghan Barrett Professional Corporation | — | 613248 | — | Dissolved | — |
| Dr. Meghan Dicks and Dr. Lance Schaefer Professional Corporation | — | 31972 | — | Merged | — |
| Dr. Meghan Dicks Professional Corporation | — | 663377 | — | Merged | — |
| Dr. Meghan Dicks Professional Corporation | — | 678371 | — | Merged | — |
| DR. MEGHAN DICKS PROFESSIONAL CORPORATION | — | 704501 | — | Active | — |
| DR. MEGHAN MURPHY P.C. INC. | — | 711504 | — | Active | — |
| Dr. Meghana Toal Professional Corporation | — | 739978 | — | Active | — |
| Dr. Mehdi Mazaheri Professional Corporation | — | 762554 | — | Active | — |
| Dr. Melad Kamran Professional Corporation | — | 736144 | — | Withdrawn | — |
| Dr. Melana Drost-Murdock Professional Corporation | — | 673292 | — | Active | — |
| Dr. Melanie Sohn Professional Corporation | — | 640596 | — | Withdrawn | — |
| Dr. Melissa Blake, Naturopathic Doctor | — | 763440 | — | Active | — |
| Dr. Melissa Bossé Professional Corporation | — | 695338 | — | Active | — |
| DR. MELISSA KEITH, INC. | — | 758771 | — | Active | — |
| Dr. Melissa MacDonald Professional Corporation | — | 745415 | — | Active | — |
| Dr. Melissa McQuaid Prof. Corp. | — | 664900 | — | Active | — |
| DR. MELVIN HACHE CORPORATION PROFESSIONNELLE INC. | — | 53079 | — | Active | — |
| Dr. Miah Robichaud-Lorde C.P. Inc. | — | 717752 | — | Active | — |
| Dr. Michael A.M. Chapman Professional Corporation | — | 622338 | — | Active | — |
| Dr. Michael Armitage Professional Corporation | — | 680856 | — | Active | — |
| DR. MICHAEL B. A. ENGLAND PROFESSIONAL CORPORATION | — | 508279 | — | Active | — |
| Dr. Michael Bone Professional Corporation | — | 695459 | — | Active | — |
| Dr. Michael Brown Professional Corporation | — | 49024 | — | Merged | — |
| Dr. Michael Brown Professional Corporation | — | 694730 | — | Active | — |
| Dr. Michael Crozier Professional Corporation | — | 674730 | — | Active | — |
| Dr. Michael Davis Prof. Corp. | — | 653842 | — | Active | — |
| DR. MICHAEL E. FORSYTHE PROFESSIONAL CORPORATION | — | 621464 | — | Active | — |
| DR. MICHAEL F. BONNER PROFESSIONAL CORPORATION | — | 46314 | — | Merged | — |
| DR. MICHAEL F. HORSMAN PROFESSIONAL CORPORATION | — | 54429 | — | Active | — |
| Dr. Michael F. Murphy Professional Corporation Ltd. | — | 632776 | — | Active | — |
| Dr. Michael Fry Radiology Professional Corporation | — | 761858 | — | Active | — |
| Dr. Michael G. Hayter Professional Corporation | — | 635819 | — | Dissolved | — |
| Dr. Michael G. O'Brien, Prof. Corp. | — | 724510 | — | Active | — |
| Dr. Michael Greschner P.C. Inc. | — | 624595 | — | Active | — |
| DR. MICHAEL H. BAIRD PROFESSIONAL CORPORATION | — | 506756 | — | Dissolved | — |
| Dr. Michael Hughson Professional Corporation | — | 638382 | — | Active | — |
| DR. MICHAEL J. DONWORTH PROFESSIONAL CORPORATION | — | 503572 | — | Dissolved | — |
| DR. MICHAEL J. MORSE PROFESSIONAL CORPORATION | — | 52303 | — | Dissolved | — |
| Dr. Michael Kahn Professional Corporation | — | 620734 | — | Active | — |
| Dr. Michael M. Chandra Professional Corporation | — | 628890 | — | Active | — |
| Dr. Michael Mackin Professional Corporation | — | 626037 | — | Dissolved | — |
| DR. MICHAEL MASRI HOLDING INC. | — | 776126 | — | Active | — |
| Dr. Michael Masri Professional Corporation Inc. | — | 741073 | — | Active | — |
| Dr. Michael McNeil Professional Corporation | — | 670111 | — | Active | — |
| Dr. Michael Naugle Professional Corporation | — | 637203 | — | Dissolved | — |
| Dr. Michael Pelkey Professional Corporation | — | 655372 | — | Active | — |
| Dr. Michael R. Bishop Professional Corporation | — | 510512 | — | Active | — |
| Dr. Michael R. Haslett Professional Corporation | — | 644559 | — | Active | — |
| Dr. Michael Salgado Holdings Limited | — | 514543 | — | Active | — |
| Dr. Michael Toupin Corporation Professionnelle Inc. | — | 605878 | — | Active | — |
| Dr. Michael Whitcomb Professional Corporation | — | 778998 | — | Active | — |
| DR. MICHEL BEAUVAIS CORPORATION PROFESSIONNELLE INC. | — | 506888 | — | Active | — |
| Dr. Michel Blanchette c.p. INC. | — | 720154 | — | Merged | — |
| Dr. Michel Bourgoin C.P. Inc. | — | 693217 | — | Active | — |
| DR. MICHEL CORMIER CORPORATION PROFESSIONNELLE INC. | — | 55006 | — | Merged | — |
| DR. MICHEL HJELKREM PROFESSIONAL CORPORATION | — | 59501 | — | Withdrawn | — |
| Dr. Michel Martin Professional Corporation (2009) Inc. | — | 38588 | — | Merged | — |
| Dr. Michel Martin Professional Corporation Inc. | — | 641161 | — | Merged | — |
| Dr. Michel Martin Professional Corporation Inc. | — | 646978 | — | Active | — |
| DR. MICHEL SIROIS CORPORATION PROFESSIONNELLE INC. | — | 507672 | — | Withdrawn | — |
| DR. MICHEL THERIAULT, D.M.D., CORPORATION PROFESSIONNELLE CORP. | — | 51979 | — | Merged | — |
| Dr. Michelle Ann Crawford Professional Corporation | — | 622157 | — | Active | — |
| Dr. Michelle Cunningham Professional Corporation | — | 659036 | — | Withdrawn | — |
| Dr. Michelle Cutler Veterinary Professional Corporation | — | 669997 | — | Active | — |
| Dr. Michelle I. Caissie Professional Corporation Inc. | — | 702523 | — | Active | — |
| Dr. Michelle Lane Professional Corporation | — | 684225 | — | Active | — |
| Dr. Michelle Power Professional Corporation | — | 666714 | — | Active | — |
| Dr. Michelle Power Professional Corporation | — | 666048 | — | Merged | — |
| Dr. Michelle Ricci Professional Corporation | — | 735818 | — | Withdrawn | — |
| DR. MIHKEL A. OJA PROFESSIONAL CORPORATION | — | 31992 | — | Pending | — |
| Dr. Milaine Marcoux P.C. Inc. | — | 753595 | — | Active | — |
| DR. MILCAH HIEMSTRA CHIROPRACTIC INC. | — | 769319 | — | Active | — |
| DR. MILIC BOGAVAC PROFESSIONAL CORPORATION | — | 51489 | — | Dissolved | — |
| Dr. Mirit Kaldas Medicine Professional Corporation | — | 715490 | — | Withdrawn | — |
| DR. MIRZA IQBAL PROFESSIONAL CORPORATION | — | 755249 | — | Active | — |
| Dr. Mitchell Downey Holdings Inc. | — | 643059 | — | Active | — |
| Dr. Mitchell Downey Professional Corporation | — | 643056 | — | Active | — |
| Dr. Mohab Ghanem Professional Corporation | — | 760760 | — | Active | — |
| Dr. Mohamed M. Khereba Professional Corporation Inc. | — | 705164 | — | Dissolved | — |
| DR. MOHAMMAD AL RWAIDI PROFESSIONAL CORPORATION INC. | — | 779653 | — | Active | — |
| Dr. Mohammad Alkarain P.C. Inc. | — | 609027 | — | Active | — |
| Dr. Mohammad Golfam P.C. Inc. | — | 708069 | — | Active | — |
| Dr. Mohammad M. Hossain Professional Corporation | — | 651449 | — | Active | — |
| Dr. Mohammad Shoyeb Family Physician | — | 755156 | — | Active | — |
| Dr. Mohammed Al-Kutbi Professional Corporation | — | 752852 | — | Active | — |
| Dr. Mollie Elise Brennan Naturopath | — | 712294 | — | Dissolved | — |
| DR. MONA SAVOIE CORPORATION PROFESSIONNELLE INC. | — | 503682 | — | Active | — |
| DR. MONIC NADEAU, OPTOMÉTRISTE, CORPORATION PROFESSIONNELLE INC. | — | 720518 | — | Active | — |
| Dr. Monic Nadeau, Optométriste, Corporation Professionnelle Inc. | — | 633665 | — | Merged | — |
| Dr. Monica Graves Family Medicine Professional Corporation | — | 725778 | — | Dissolved | — |
| Dr. Monica Morales Professional Corporation | — | 726386 | — | Active | — |
| Dr. Monique Marais Professional Corporation | — | 720910 | — | Active | — |
| Dr. Monzinga Ngola C.P. Inc. | — | 677431 | — | Withdrawn | — |
| Dr. Morgan Langille Professional Corporation | — | 676023 | — | Active | — |
| DR. MOUNA BEN AMOR PROFESSIONAL CORPORATION | — | 703733 | — | Active | — |
| Dr. MS Kamran Medical Professional Corporation | — | 778172 | — | Active | — |
| Dr. Muaad Gerafa Professional Corporation | — | 759403 | — | Pending | — |
| Dr. Muhammad Rasul Professional Corporation Inc. | — | 739514 | — | Active | — |
| DR. MUHAMMAD SHAFIQ PROFESSIONAL CORPORATION | — | 627458 | — | Active | — |
| Dr. Muhammad Z. Hossain Professional Corporation | — | 717543 | — | Active | — |
| Dr. Muhammad Z. Shrayyef Prof. Corp. | — | 648132 | — | Dissolved | — |
| Dr. Mukhaimer H. Dani Prof. Corp. | — | 601952 | — | Dissolved | — |
| Dr. Mukhida Medical Professional Corporation | — | 757953 | — | Active | — |
| Dr. Murray Geddes Professional Corporation Ltd. | — | 672347 | — | Dissolved | — |
| Dr. Musa Professional Corporation | — | 646625 | — | Withdrawn | — |
| DR. MY-ANH NGUYEN PROFESSIONAL CORPORATION | — | 646298 | — | Dissolved | — |
| Dr. Myatt Academy of Learning Inc. | — | 744689 | — | Active | — |
| Dr. Myriam Ferron Corporation Professionnelle Inc. | — | 727900 | — | Withdrawn | — |
| DR. MÉLANIE ARSENAULT C.P. LTÉE | — | 712391 | — | Active | — |
| DR. MÉLANIE ARSENAULT CORPORATION PROFESSIONNELLE INC. | — | 614236 | — | Merged | — |
| Dr. N. Daniel & Dr. C.J. Chiasson P.C. Inc. | — | 686043 | — | Merged | — |
| Dr. N. Daniel & Dr. E. St-Germain P.C. Inc. | — | 651888 | — | Active | — |
| DR. N. J. FLEMMING PROFESSIONAL CORPORATION | — | 666415 | — | Merged | — |
| Dr. N. Nassiri Professional Corporation | — | 751979 | — | Active | — |
| Dr. N. Rajcumar Medical Professional Corporation | — | 727992 | — | Active | — |
| DR. N. RAMA MURTHY PROFESSIONAL CORPORATION | — | 31990 | — | Merged | — |
| DR. N. RAMA MURTHY PROFESSIONAL CORPORATION | — | 607567 | — | Dissolved | — |
| DR. N. RAMA MURTHY PROFESSIONAL CORPORATION | — | 46347 | — | Merged | — |
| Dr. N. Sharma Professional Corporation | — | 620691 | — | Dissolved | — |
| DR. N. SKJONSBERG PROFESSIONAL CORPORATION LTD. | — | 739154 | — | Active | — |
| Dr. N.G. DANIEL P.C. INC. | — | 725942 | — | Merged | — |
| DR. N.G. DANIEL P.C. INC. | — | 698544 | — | Withdrawn | — |
| Dr. N.G. DANIEL P.C. INC. | — | 711739 | — | Dissolved | — |
| Dr. N.G. Daniel P.C. Inc. | — | 683799 | — | Merged | — |
| Dr. N.G. Daniel P.C. Inc. | — | 683963 | — | Merged | — |
| Dr. N.V. Chettiar Professional Corporation Inc. | — | 621935 | — | Active | — |
| Dr. Naameh Moussaoumay Medicine P.C. Ltd. | — | 775755 | — | Active | — |
| DR. NACH DANIEL & DR. CHRISTIAN J. CHIASSON PROFESSIONAL CORPORATION INC. | — | 723905 | — | Merged | — |
| DR. NACH DANIEL & DR. CHRISTIAN J. CHIASSON PROFESSIONAL CORPORATION INC. | — | 687022 | — | Merged | — |
| Dr. Nach Daniel P.C. Inc. | — | 664734 | — | Active | — |
| Dr. Nach Daniel Professional Corporation Inc. | — | 624518 | — | Merged | — |
| DR. NACH G. DANIEL P.C. INC. | — | 693126 | — | Withdrawn | — |
| Dr. Nach G. Daniel P.C. Inc. | — | 692184 | — | Merged | — |
| DR. NACH G. DANIEL P.C. INC. | — | 711740 | — | Dissolved | — |
| DR. NACH G. DANIEL P.C. INC. | — | 725943 | — | Merged | — |
| Dr. Nach G. Daniel Professional Corporation Inc. | — | 515881 | — | Active | — |
| Dr. Nach George Daniel P.C. Inc. | — | 703560 | — | Merged | — |
| Dr. Nach George Daniel P.C. Inc. | — | 702253 | — | Merged | — |
| Dr. Nachaat G. Daniel P.C. Inc. | — | 688715 | — | Merged | — |
| DR. NACHIKETA SINHA PROFESSIONAL CORPORATION INC. | — | 627072 | — | Active | — |
| Dr. Nada Taha Professional Corporation | — | 748967 | — | Active | — |
| Dr. Nadi Nasib Ibrahim Al-Karmi M.D. Professional Corporation | — | 706339 | — | Active | — |
| Dr. Naila Ramji Professional Corporation | — | 727944 | — | Active | — |
| Dr. Najmedden Attabib Professional Corporation | — | 640088 | — | Active | — |
| Dr. Nancy Jeffery Professional Corporation | — | 619915 | — | Active | — |
| Dr. Nancy Kang Professional Corporation | — | 710870 | — | Merged | — |
| Dr. Naomi Giberson Psychology Professional Corporation | — | 765927 | — | Active | — |
| DR. NAOMI S. WHITE PROFESSIONAL CORPORATION | — | 665487 | — | Active | — |
| DR. NARINA MD MEDICAL PROFESSIONAL CORPORATION | — | 772207 | — | Active | — |
| Dr. Nasir Iqbal Professional Corporation | — | 717242 | — | Dissolved | — |
| DR. NASSIF DEVELOPMENT INC. | — | 635624 | — | Dissolved | — |
| Dr. Natalie Goodine Professional Corporation | — | 747578 | — | Active | — |
| DR. NATALIE GRAVES PROFESSIONAL CORPORATION | — | 677411 | — | Active | — |