| DR. NATALIE SHEEHAN P.C. INC. | — | 603278 | — | Active | — |
| Dr. Natalie Wallace Professional Corporation | — | 735561 | — | Active | — |
| DR. NATALY VO HOLDINGS LIMITED | — | 513223 | — | Merged | — |
| Dr. Nataly Vo Professional Corporation | — | 53982 | — | Merged | — |
| DR. NATALY VO PROFESSIONAL CORPORATION | — | 609234 | — | Active | — |
| Dr. Natasha Caissie C.P. Inc. | — | 726074 | — | Active | — |
| Dr. Natasha Campbell Professional Corporation | — | 670960 | — | Dissolved | — |
| Dr. Natasha Cormier PC Inc. | — | 756245 | — | Active | — |
| Dr. Natasha Goudreau Professional Corporation | — | 739790 | — | Active | — |
| Dr. Natasha Jawed Professional Corporation | — | 768729 | — | Active | — |
| Dr. Nathalie White C.P. Inc. | — | 728137 | — | Active | — |
| DR. NAVARO N. SPARTACO PROFESSIONAL CORPORATION | — | 654164 | — | Dissolved | — |
| Dr. Navjot Cheema M.D. Professional Corporation | — | 765747 | — | Active | — |
| Dr. Neal Patel Professional Corporation | — | 657620 | — | Active | — |
| DR. NEIL BRANCH PROFESSIONAL CORPORATION INC. | — | 600031 | — | Active | — |
| Dr. Neil Dwyer Professional Corporation Inc. | — | 620262 | — | Active | — |
| DR. NEIL GRANT (1997) PROFESSIONAL CORPORATION | — | 504662 | — | Active | — |
| DR. NEIL GRANT PROFESSIONAL CORPORATION | — | 42388 | — | Merged | — |
| DR. NEIL J. FLEMMING PROFESSIONAL CORPORATION | — | 610011 | — | Merged | — |
| Dr. Neil Manson Professional Corporation | — | 626966 | — | Active | — |
| DR. NEJAT MEMICHE P.C. INC. | — | 720934 | — | Active | — |
| Dr. Nessa R. Gogan (2008) Professional Corporation | — | 638449 | — | Active | — |
| DR. NEVILLE A. RUSSELL PROFESSIONAL CORPORATION | — | 500263 | — | Dissolved | — |
| DR. NEVILLE JEANNOTTE PROFESSIONAL CORPORATION | — | 652267 | — | Withdrawn | — |
| DR. NIAZ KHAN PROFESSIONAL CORPORATION | — | 601779 | — | Active | — |
| Dr. Nicholas Anhorn, BSc, ND Professional Corporation | — | 691316 | — | Active | — |
| Dr. Nicholas Ault P.C. Inc | — | 717941 | — | Active | — |
| DR. NICHOLAS KESCHTKAR PROF. CORP. | — | 652773 | — | Active | — |
| Dr. Nicholas Pilote Corp. Prof. Inc. | — | 607952 | — | Active | — |
| Dr. Nicholas Relja Professional Corporation | — | 768741 | — | Active | — |
| Dr. Nicola Buckley Professional Corporation | — | 676944 | — | Active | — |
| Dr. Nicole Basque P.C. Inc. | — | 683994 | — | Active | — |
| Dr. Nicole Beckett Professional Corporation | — | 751484 | — | Active | — |
| Dr. Nicole Boudreau C.P. Inc. | — | 740636 | — | Active | — |
| Dr. Nicole Jewett Professional Corporation | — | 686006 | — | Active | — |
| Dr. Nicole Maillet-Lebel P.C. Inc. | — | 720328 | — | Active | — |
| Dr. Nikoo Habibnia Professional Corporation | — | 751269 | — | Dissolved | — |
| DR. NINA ZIGANTE PROFESSIONAL CORPORATION | — | 512469 | — | Active | — |
| DR. NITESH PATEL DENTAL PROF. CORP. | — | 668365 | — | Active | — |
| Dr. Nizar Samad Professional Corporation | — | 701081 | — | Active | — |
| Dr. Njaka Thierry Raherinaivo C.P. Inc. | — | 692676 | — | Active | — |
| Dr. Njoku Professional Corporation | — | 649197 | — | Pending | — |
| DR. NORMAN LISTER PROFESSIONAL CORPORATION | — | 56586 | — | Pending | — |
| Dr. Norman Skjonsberg Professional Corporation Inc. | — | 690673 | — | Active | — |
| Dr. Noémie Gionet Landry C.P. Inc. | — | 703221 | — | Active | — |
| Dr. O's Compression Wear | — | 718267 | — | Dissolved | — |
| Dr. Obioma Ozumba Professional Corporation | — | 666134 | — | Dissolved | — |
| Dr. Odosa Igberase Professional Corporation | — | 742420 | — | Active | — |
| DR. OETKER CANADA LTD. | — | 679470 | — | Dissolved | — |
| Dr. Olga Novikova Medical Professional Corporation Inc. | — | 750493 | — | Active | — |
| Dr. Oludara-Fadare P.C. Inc. | — | 668608 | — | Dissolved | — |
| Dr. Olufemi Olufowobi Professional Corporation | — | 642614 | — | Dissolved | — |
| Dr. Olugbenga Alabi Professional Corporation | — | 688282 | — | Dissolved | — |
| Dr. Olushola Keripe Professional Corporation | — | 668653 | — | Active | — |
| Dr. Oluwasayo Olatunde Prof. Corp. | — | 647638 | — | Active | — |
| DR. OMANA E. JOHN PROFESSIONAL CORPORATION | — | 46813 | — | Withdrawn | — |
| Dr. Ordi - PC Dr. | — | 615863 | — | Dissolved | — |
| Dr. Oscar Diaznoriega P. C. Inc. | — | 757502 | — | Active | — |
| Dr. P. Albert et Dre M. Urbain Corporation Professionnelle Inc. | — | 657694 | — | Active | — |
| DR. P. S. BOWN PROFESSIONAL CORPORATION | — | 678641 | — | Active | — |
| Dr. P. Scott Bagnell Professional Corporation | — | 609990 | — | Withdrawn | — |
| Dr. P. Scott Wilson Anesthesiology Professional Corporation Inc. | — | 638648 | — | Dissolved | — |
| Dr. P. Weaver Professional Corp. | — | 673044 | — | Dissolved | — |
| DR. P.A. ROSS PROFESSIONAL CORPORATION | — | 503371 | — | Active | — |
| DR. P.F. EDWARDS PROFESSIONAL CORPORATION | — | 31971 | — | Merged | — |
| DR. P.F. EDWARDS PROFESSIONAL CORPORATION | — | 512518 | — | Active | — |
| Dr. P.M. Tremblay C.P. Inc. | — | 514823 | — | Active | — |
| DR. PAIGE L. EMENAU PROFESSIONAL CORPORATION | — | 50826 | — | Active | — |
| DR. PAMELA CASEY PROFESSIONAL CORPORATION | — | 644318 | — | Active | — |
| Dr. Pamela Desrosiers C.P. Inc. | — | 746381 | — | Active | — |
| Dr. Pamela Jarrett Professional Corporation | — | 682918 | — | Active | — |
| DR. PARISA HAJIMIRZARAHIMSHIRAZI MEDICINE PROFESSIONAL CORPORATION | — | 766685 | — | Active | — |
| DR. PASCAL KARAM P.C. INC. | — | 673039 | — | Active | — |
| DR. PAT PHELAN PROFESSIONAL CORPORATION | — | 510501 | — | Active | — |
| Dr. Patrice Robichaud Corporation Professionnelle Inc. | — | 635189 | — | Active | — |
| Dr. Patrice Robichaud Corporation Professionnelle Inc. | — | 634584 | — | Merged | — |
| DR. PATRICIA BRYDEN PROFESSIONAL CORPORATION | — | 51209 | — | Active | — |
| DR. PATRICIA DUTTON PROFESSIONAL CORPORATION INC. | — | 705753 | — | Active | — |
| Dr. Patricia Logan Professional Corporation | — | 682790 | — | Active | — |
| Dr. Patricia Ramsey Professional Corporation | — | 659609 | — | Active | — |
| DR. PATRICK BABINEAU C.P. INC. | — | 732197 | — | Active | — |
| DR. PATRICK CLEMENTS PROFESSIONAL CORPORATION | — | 501438 | — | Active | — |
| Dr. Patrick G. Bonner Professional Corporation | — | 40850 | — | Merged | — |
| Dr. Patrick Girouard C.P. Inc. | — | 734041 | — | Active | — |
| DR. PATRICK HWANG PROFESSIONAL CORPORATION | — | 501929 | — | Withdrawn | — |
| Dr. Patrick J. Miklos Professional Corporation | — | 759386 | — | Active | — |
| Dr. Patrick Kendall Professional Corporation | — | 764649 | — | Active | — |
| Dr. Patrick Maloney Professional Corporation | — | 662569 | — | Active | — |
| Dr. Patrick O. B. Omotoso Professional Corporation | — | 656786 | — | Pending | — |
| Dr. Patterson Psychology Clinic | — | 777818 | — | Active | — |
| DR. PAUL A. PUGH, P.C. | — | 42478 | — | Dissolved | — |
| Dr. Paul A. S. Smith Professional Corporation | — | 635718 | — | Active | — |
| Dr. Paul Atkinson Professional Corporation | — | 647201 | — | Active | — |
| Dr. Paul B. Kerr Professional Corporation | — | 628614 | — | Active | — |
| DR. PAUL CASTONGUAY CORPORATION PROFESSIONNELLE INC. | — | 54055 | — | Merged | — |
| Dr. Paul Champagne Professional Corporation | — | 515986 | — | Active | — |
| DR. PAUL CORTIN CORPORATION PROFESSIONNELLE INC. | — | 58990 | — | Withdrawn | — |
| Dr. Paul D. Keyes Professional Corporation | — | 507310 | — | Active | — |
| Dr. Paul D. Page Professional Corporation | — | 664064 | — | Active | — |
| DR. PAUL FRANKISH & DR. AMY GROOM PROFESSIONAL CORPORATION | — | 688488 | — | Active | — |
| DR. PAUL GOOBIE PROF. CORP. | — | 509669 | — | Active | — |
| Dr. Paul LaPierre Professional Corporation Inc. | — | 704514 | — | Active | — |
| DR. PAUL LAPIERRE PROFESSIONAL CORPORATION INC. | — | 503061 | — | Merged | — |
| DR. PAUL McCAUGHEY PROFESSIONAL CORPORATION | — | 778821 | — | Active | — |
| DR. PAUL MCKENNA P.C. INC. | — | 684037 | — | Active | — |
| DR. PAUL PARENT PROFESSIONAL CORPORATION | — | 58938 | — | Active | — |
| Dr. Paul Pechikoff c.p. Inc. | — | 617883 | — | Dissolved | — |
| Dr. Paul Postuma Professional Corporation | — | 617133 | — | Dissolved | — |
| Dr. Paul Vanhoutte Professional Corporation | — | 630134 | — | Active | — |
| Dr. Paul W Chase Professional Corporation | — | 777826 | — | Active | — |
| Dr. Paul's ADHD Clinic | — | 779356 | — | Active | — |
| DR. PAULA CARMICHAEL PROFESSIONAL CORPORATION | — | 648240 | — | Active | — |
| Dr. Paulette LeBlanc C. P. Inc. | — | 515161 | — | Active | — |
| Dr. Pavly Soliman Prof. Corp. | — | 770158 | — | Active | — |
| Dr. Pawandeep Sidhu P.C. Inc. | — | 778525 | — | Active | — |
| Dr. Payam Farhadnia C.P. Inc. | — | 687930 | — | Dissolved | — |
| Dr. Pejman Sadeghi Medical Professional Corporation | — | 712376 | — | Active | — |
| DR. PEPPER COMPANY | — | 17532 | — | Dissolved | — |
| DR. PERLEY WEAVER PROFESSIONAL CORPORATION | — | 502831 | — | Dissolved | — |
| Dr. Peter C. Stoddard Prof. Corp. | — | 640266 | — | Dissolved | — |
| Dr. Peter Currie (2017) Professional Corporation | — | 694656 | — | Dissolved | — |
| DR. PETER CURRIE HOLDINGS INC. | — | 621462 | — | Active | — |
| DR. PETER CURRIE PROFESSIONAL CORPORATION | — | 12470 | — | Merged | — |
| Dr. Peter Dickinson Professional Corporation | — | 696703 | — | Active | — |
| Dr. Peter E. Halford, Jr. Professional Corporation | — | 651506 | — | Active | — |
| Dr. Peter F. Manson Professional Corporation | — | 511630 | — | Merged | — |
| Dr. Peter Feero P.C. Inc. | — | 508849 | — | Active | — |
| DR. PETER G. MAGEE PROFESSIONAL CORPORATION | — | 506077 | — | Active | — |
| DR. PETER G. WENTZELL PROFESSIONAL CORPORATION | — | 47860 | — | Dissolved | — |
| Dr. Peter H.F. West Professional Corp. | — | 512827 | — | Active | — |
| Dr. Peter Halford Professional Corporation | — | 614656 | — | Dissolved | — |
| Dr. Peter K. Fraser Professional Corporation | — | 619433 | — | Dissolved | — |
| Dr. Peter M. Fong Professional Corporation | — | 613786 | — | Active | — |
| Dr. Peter O'Hanley Professional Corporation | — | 507710 | — | Active | — |
| DR. PETER S. DOCHERTY PROFESSIONAL CORPORATION | — | 622593 | — | Dissolved | — |
| Dr. Peter Zhou Professional Corporation | — | 718051 | — | Withdrawn | — |
| Dr. Petr Landau Professional Corporation | — | 623874 | — | Active | — |
| Dr. Philip Bock Professional Corporation | — | 660042 | — | Active | — |
| Dr. Philip C. Hsu Professional Corporation | — | 634974 | — | Dissolved | — |
| Dr. Philip James Burton Inc. | — | 604002 | — | Dissolved | — |
| Dr. Philip James Burton Inc. | — | 611214 | — | Active | — |
| DR. PHILIP TILDSLEY PROFESSIONAL CORPORATION | — | 714020 | — | Active | — |
| DR. PHILIP W. KAY PROFESSIONAL CORPORATION | — | 44158 | — | Active | — |
| Dr. Philipp Kolb P.C. Inc. | — | 762117 | — | Active | — |
| Dr. Philippe Chouinard C.P. Inc. | — | 677523 | — | Active | — |
| Dr. Philippe Harrigan C.P. Inc. | — | 717414 | — | Active | — |
| DR. PHILIPPE PERKINS CORPORATION PROFESSIONNELLE INC. | — | 506302 | — | Active | — |
| Dr. Philippe Virgili Corporation Professionnelle Inc. | — | 515340 | — | Dissolved | — |
| DR. PIERRE BOISSONNAULT CORPORATION PROFESSIONNELLE INC. | — | 515815 | — | Dissolved | — |
| DR. PIERRE D. TREMBLAY C.P. INC. | — | 602399 | — | Merged | — |
| DR. PIERRE D. TREMBLAY C.P. INC. | — | 778592 | — | Active | — |
| DR. PIERRE MARTIN C.P. INC. | — | 661241 | — | Merged | — |
| Dr. Pierre Martin C.P. Inc. | — | 670154 | — | Active | — |
| Dr. Pierre O'Brien P.C. Inc. | — | 729626 | — | Active | — |
| DR. PIERRE VERGER CORPORATION PROFESSIONNELLE INC. | — | 647989 | — | Active | — |
| Dr. Podolsky (NB) Professional Corporation | — | 674839 | — | Active | — |
| DR. POND, P.C. | — | 41459 | — | Active | — |
| Dr. Prabaharan Balasingham Professional Corporation | — | 744322 | — | Dissolved | — |
| DR. PRADEEP SHENOY P.C. INC. | — | 642011 | — | Active | — |
| Dr. Prasanth Rajan Professional Corporation | — | 775355 | — | Active | — |
| Dr. Pratibha Narang Professional Corporation | — | 775606 | — | Active | — |
| Dr. Prem S. Gandham Professional Corporation | — | 714277 | — | Dissolved | — |
| Dr. Preston A. Smith Prof. Corp | — | 616063 | — | Withdrawn | — |
| Dr. Priyanka Mandal Professional Corporation | — | 730182 | — | Dissolved | — |
| Dr. Quinn Rivet B.Sc., N.D. Naturopathic Doctor | — | 761557 | — | Active | — |
| DR. QUINTON BARRY PROFESSIONAL CORPORATION | — | 770836 | — | Active | — |
| DR. R. A. MURRAY PROFESSIONAL CORPORATION | — | 50341 | — | Dissolved | — |
| Dr. R. Ahmadzadeh P.C. Inc. | — | 678940 | — | Withdrawn | — |
| DR. R. C. MACDONALD PROFESSIONAL CORPORATION | — | 42635 | — | Dissolved | — |
| Dr. R. Daniel Coffin Professional Corporation | — | 664401 | — | Active | — |
| DR. R. DANIEL COFFIN PROFESSIONAL CORPORATION | — | 53628 | — | Merged | — |
| DR. R. FAGAN PROFESSIONAL CORPORATION | — | 50081 | — | Dissolved | — |
| Dr. R. H. McLean Professional Corporation | — | 617706 | — | Active | — |
| Dr. R. I. Hatheway (2021) Prof. Corp. | — | 721354 | — | Active | — |
| Dr. R. I. Hatheway (Fredericton) Prof. Corp. | — | 778555 | — | Active | — |
| DR. R. KATTARI PROFESSIONAL CORPORATION | — | 509505 | — | Active | — |
| DR. R. MENON PROFESSIONAL CORPORATION | — | 510564 | — | Dissolved | — |
| DR. R. MYERS PROFESSIONAL CORPORATION | — | 31931 | — | Withdrawn | — |
| DR. R. N. STEVENSON PROFESSIONAL CORPORATION | — | 627280 | — | Dissolved | — |
| DR. R. SANKARAN PROFESSIONAL CORPORATION | — | 55927 | — | Dissolved | — |
| Dr. R.B. Davidson Holdings Inc. | — | 501565 | — | Active | — |
| Dr. R.K. Isaac Professional Corporation | — | 705788 | — | Active | — |
| Dr. R.T. Craig Professional Corporation | — | 513761 | — | Dissolved | — |
| Dr. Rachael Davey Loeppky Professional Corporation | — | 768721 | — | Active | — |
| Dr. Rachael L. Smith Professional Corporation | — | 613644 | — | Dissolved | — |
| Dr. Rachel Fox PC Inc. | — | 662310 | — | Active | — |
| Dr. Rachel Goss Professional Corporation | — | 716113 | — | Active | — |
| Dr. Rachel Ouellette Professional Corporation | — | 670619 | — | Active | — |
| Dr. Rachelle Coates (2024) Professional Corporation | — | 762624 | — | Active | — |
| Dr. Rachelle Coates Professional Corporation | — | 710282 | — | Merged | — |
| Dr. Rachelle Haché P.C. Inc. | — | 685754 | — | Active | — |
| Dr. Radnashed P.C. Inc. | — | 686239 | — | Active | — |
| Dr. Radu Parascan Prof. Corp. | — | 746563 | — | Active | — |
| Dr. Rajandra Kanji Professional Corporation | — | 656600 | — | Merged | — |
| Dr. Rajandra Kanji Professional Corporation | — | 708266 | — | Active | — |
| Dr. Rajiv Teeluck C.P. Inc. | — | 728136 | — | Active | — |
| Dr. Ralph G. Ellis P.C. Inc. | — | 653929 | — | Active | — |
| Dr. Ram Prakash Galwa P.C. Inc. | — | 673576 | — | Active | — |
| Dr. Rancier & Dre Wozniak C.P. Inc. | — | 758120 | — | Active | — |
| DR. RAND FORGIE PROFESSIONAL CORPORATION | — | 51041 | — | Active | — |