Johannes F. Grimmer
Rating: 4.8 of 5
( out of 101 reviews )

Johannes F. Grimmer, MD

Languages spoken: English, German

Clinical Locations

Primary Location

Primary Children's Hospital

Pediatric Otolaryngology/ENT
100 N Mario Capecchi Drive
Salt Lake City , UT 84113
801-662-1740
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Ear, Nose, & Throat Clinic

Otolaryngology/ENT, Area E
50 N Medical Dr
Salt Lake City , UT 84132
801-662-1740
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  • J. Fredrik Grimmer, MD is a Professor of Otolaryngology-Head and Neck Surgery at the University of Utah and Primary Children’s Hospital. He is board certified in Otolaryngology-Head and Neck Surgery and Complex Pediatric Otolaryngology. His clinical interest are in pediatric head and neck surgery including fetal airway surgery, endocrine surgery, maxillofacial boney tumors, surgical access to the skull base and surgery of vascular anomalies. His research interests include identifying the genetic etiology of vascular anomalies, investigating the role of HPV in pediatric thyroid cancer, developing minimally invasive approaches to the skull base and understanding the predictive value of cytogenic testing in pediatric thyroid cancer. He founded the Vascular Anomalies Center and co-founded and is the Surgical Director of the Pediatric Thyroid Center at Primary Children's Hospital.

    Specialties

    Patient Rating

    Rating: 4.8 out of 5
    4.8 /5
    ( out of 101 reviews )

    The patient rating score is an average of all responses on our patient experience survey. The rating averages scores for all questions about care from our providers.

    The scale on which responses are measured is 1 to 5 with 5 being the best score.

    Patient Comments

    Patient comments are gathered from our patient experience survey and displayed in their entirety. For the convenience of our visitors, some patient comments have been translated from their original language into English while preserving their original meaning as accurately as possible. Patients are de-identified for confidentiality and patient privacy.

    December 31, 2025
    PRIMARY CHILDREN'S MEDICAL CENTER
    Rating: 5 out of 5

    Dr. Grimmer personally made us feel comfortable with the procedure and took excellent care of our daughter.

    December 18, 2025
    PRIMARY CHILDREN'S MEDICAL CENTER
    Rating: 5 out of 5

    Dr. Grimmer was professional, genuine and sincere. He was awesome.

    December 13, 2025
    PRIMARY CHILDREN'S MEDICAL CENTER
    Rating: 5 out of 5

    He is a great man.You do everything good

    December 11, 2025
    PRIMARY CHILDREN'S MEDICAL CENTER
    Rating: 5 out of 5

    Fantastic provider. He speaks to both our daughter and us (the parents) in a kind and unthreatening manner. He is gentle and personable. He is great! And his staff js wonderful. We would not consider going anywhere else.

    November 22, 2025
    PRIMARY CHILDREN'S MEDICAL CENTER
    Rating: 5 out of 5

    Was able to help with our issue. Answered all questions, and resolved all concerns during the visit. We would be happy to see him again if we have any further needs with ENT.

    November 05, 2025
    PRIMARY CHILDREN'S MEDICAL CENTER
    Rating: 5 out of 5

    He's great

    October 08, 2025
    PRIMARY CHILDREN'S MEDICAL CENTER
    Rating: 5 out of 5

    He was excellent in examining my daughter and explained her condition to me in detail, what she was suffering from and what procedure he would perform. This made me feel reassured about my daughter's health condition. [TRANSLATED]

    October 08, 2025
    PRIMARY CHILDREN'S MEDICAL CENTER
    Rating: 5 out of 5

    Very good [TRANSLATED]

    September 28, 2025
    PRIMARY CHILDREN'S MEDICAL CENTER
    Rating: 5 out of 5

    No BS straight to the point. Very helpful and courteous. 10/10 great doctor.

  • J. Fredrik Grimmer, MD is a Professor of Otolaryngology-Head and Neck Surgery at the University of Utah and Primary Children’s Hospital. He is board certified in Otolaryngology-Head and Neck Surgery and Complex Pediatric Otolaryngology. His clinical interest are in pediatric head and neck surgery including fetal airway surgery, endocrine surgery, maxillofacial boney tumors, surgical access to the skull base and surgery of vascular anomalies. His research interests include identifying the genetic etiology of vascular anomalies, investigating the role of HPV in pediatric thyroid cancer, developing minimally invasive approaches to the skull base and understanding the predictive value of cytogenic testing in pediatric thyroid cancer. He founded the Vascular Anomalies Center and co-founded and is the Surgical Director of the Pediatric Thyroid Center at Primary Children's Hospital.

    Board Certification and Academic Information

    Academic Departments Otolaryngology: Head & Neck Surgery -Professor
    Pediatrics -Adjunct Professor

    Education history

    Fellowship Pediatric Otolaryngology - Children's Hospital Boston and Harvard Medical School Fellow
    Residency Otolaryngology - University of Michigan Resident
    Internship General Surgery - University of Michigan Intern
    Fellowship Pathology - Albert Einstein College of Medicine Fellow
    Professional Medical Medicine - Albert Einstein College of Medicine M.D.
    Undergraduate Philosophy - Brigham Young University B.A.

    Selected Publications

    Journal Article

    1. Bellamkonda N, Grimmer JF (2025). Preoperative Rehearsal in the Removal of an Airway Foreign Body in a Preterm Septic Neonate. Case Rep Otolaryngol, 2025, 8812622. (Read full publication)
    2. Eyring JB, Allen WP, Bayazid LO, Hemeyer BM, Walker S, Orb QT, Grimmer JF, Rampton J, Meier JD (2024). Value of Imaging Measurements in Micrognathia-Related Fetal Airway Obstruction Within a Fetal Center. Laryngoscope, 135(1), 393-401. (Read full publication)
    3. Grimmer JF, Hoffman MR, Iyer RR, Brockmeyer DL (2022). Combined transnasal/transoral endoscopic odontoid resection in pediatric patients: Otolaryngologic considerations to airway management, endoscopic exposure, and complication management. Int J Pediatr Otorhinolaryngol, 164, 111372. (Read full publication)
    4. Dunya G, Dance L, Grimmer JF (2022). Comparing ATA guidelines vs TI-RADS for evaluation of pediatric thyroid lesions. Int J Pediatr Otorhinolaryngol, 164, 111411. (Read full publication)
    5. Iyer RR, Grimmer JF, Brockmeyer DL (2021). Endoscopic transnasal/transoral odontoid resection in children: results of a combined neurosurgical and otolaryngological protocolized, institutional approach. J Neurosurg Pediatr, 1-8. (Read full publication)
    6. Prussin AJ, Babajanian E, Error M, Grimmer JF, Ku J, McRae B, Meier J, Thiesset H, Skirko JR (2020). Radiofrequency Ablation vs Electrocautery Blinded Randomized Trial: Impact on Clinically Meaningful Outcomes. Otolaryngol Head Neck Surg, 164(6), 1186-1192. (Read full publication)
    7. Flores Daboub JA, Grimmer JF, Frigerio A, Wooderchak-Donahue W, Arnold R, Szymanski J, Longo N, Bayrak-Toydemir P (2020). Parkes Weber syndrome associated with two somatic pathogenic variants in RASA1. Cold Spring Harb Mol Case Stud, 6(4). (Read full publication)
    8. Barneck MD, Webb JT, Robinson RE, Grimmer JF (2015). Flow dynamics in pediatric rigid bronchoscopes using computer-aided design modeling software. Laryngoscope, 126(8), 1940-5. (Read full publication)
    9. Chun R, Jabbour N, Balakrishnan K, Bauman N, Darrow DH, Elluru R, Grimmer JF, Perkins J, Richter G, Shin J (2016). Education on, Exposure to, and Management of Vascular Anomalies During Otolaryngology Residency and Pediatric Otolaryngology Fellowship. JAMA Otolaryngol Head Neck Surg, 142(7), 648-51. (Read full publication)
    10. Duval M, Meier J, Asfour F, Jackson D, Grimmer JF, Muntz HR, Park AH (2016). Association between follicular tracheitis and gastroesophageal reflux. Int J Pediatr Otorhinolaryngol, 82, 8-11. (Read full publication)
    11. Elluru RG, Friess MR, Richter GT, Grimmer JF, Darrow DH, Shin JJ, Perkins JA (2015). Multicenter Evaluation of the Effectiveness of Systemic Propranolol in the Treatment of Airway Hemangiomas. Otolaryngol Head Neck Surg, 153(3), 452-60. (Read full publication)
    12. Frigerio A, Wright K, Wooderchak-Donahue W, Tan OT, Margraf R, Stevenson DA, Grimmer JF, Bayrak-Toydemir P (2015). Genetic Variants Associated with Port-Wine Stains. PLoS One, 10(7), e0133158. (Read full publication)
    13. Duval M, Tarasidis G, Grimmer JF, Muntz HR, Park AH, Smith M, Asfour F, Meier J (2015). Role of operative airway evaluation in children with recurrent croup: a retrospective cohort study. Clin Otolaryngol, 40(3), 227-33. (Read full publication)
    14. Balakrishnan K, Bauman N, Chun RH, Darrow DH, Grimmer JF, Perkins JA, Richter GT, Shin JJ, Shivaram GM, Sidell DR, Elluru RG (2015). Standardized outcome and reporting measures in pediatric head and neck lymphatic malformations. Otolaryngol Head Neck Surg, 152(5), 948-53. (Read full publication)
    15. Duval M, Grimmer JF, Meier J, Muntz HR, Park AH (2015). The effect of age on pediatric tympanoplasty outcomes: a comparison of preschool and older children. Int J Pediatr Otorhinolaryngol, 79(3), 336-41. (Read full publication)
    16. Givens DJ, Buchmann LO, Agarwal AM, Grimmer JF, Hunt JP (2014). BRAF V600E does not predict aggressive features of pediatric papillary thyroid carcinoma. Laryngoscope, 124(9), E389-93. (Read full publication)
    17. Colletti G, Frigerio A, Giovanditto F, Biglioli F, Chiapasco M, Grimmer JF (2014). Surgical treatment of vascular malformations of the facial bones. J Oral Maxillofac Surg, 72(7), 1326.e1-18. (Read full publication)
    18. Meier JD, Grimmer JF (2014). Evaluation and management of neck masses in children. Am Fam Physician, 89(5), 353-8. (Read full publication)
    19. Crockett DJ, Meier JD, Wilson KF, Grimmer JF (2013). Treatment of oral cavity venous malformations with the Nd:YAG laser using the underwater technique. Otolaryngol Head Neck Surg, 149(6), 954-6. (Read full publication)
    20. Siegel DH, Shieh JTC, Kwon EK, Baselga E, Blei F, Cordisco M, Dobyns WB, Duffy KJ, Garzon MC, Gibbs DL, Grimmer JF, Hayflick SJ, Krol AL, Kwok PY, Lorier R, Matter A, McWeeney S, Metry D, Mitchell S, Pope E, Santoro JL, Stevenson DA, Bayrak-Toydemir P, Wilmot B, Worthey EA, Frieden IJ, Drolet BA, Broeckel U (2013). Copy number variation analysis in 98 individuals with PHACE syndrome. J Invest Dermatol, 133(3), 677-684. (Read full publication)
    21. Parikh SR, Darrow DH, Grimmer JF, Manning SC, Richter GT, Perkins JA (2013 Feb). Propranolol use for infantile hemangiomas: American Society of Pediatric Otolaryngology Vascular Anomalies Task Force practice patterns. JAMA Otolaryngol Head Neck Surg, 133(3), 677-684.
    22. Frigerio A, Stevenson DA, Grimmer JF (2012). The genetics of vascular anomalies. Curr Opin Otolaryngol Head Neck Surg, 20(6), 527-32. (Read full publication)
    23. Drolet BA, Pope E, Juern AM, Sato T, Howell B, Puttgen KB, Lara-Corrales I, Gilliam A, Mancini A, Powell J, Siegel D, Metry D, Stevenson DA, Grimmer JF, Frieden IJ (2012). Gastrointestinal bleeding in infantile hemangioma: a complication of segmental, rather than multifocal, infantile hemangiomas. J Pediatr, 160(6), 1021-6.e3. (Read full publication)
    24. Mitchell S, Siegel DH, Shieh JT, Stevenson DA, Grimmer JF, Lewis T, Metry D, Frieden I, Blei F, Kayserili H, Drolet BA, Bayrak-Toydemir P (2012). Candidate locus analysis for PHACE syndrome. Am J Med Genet A, 158A(6), 1363-7. (Read full publication)
    25. Grimmer JF, Williams MS, Pimentel R, Mineau G, Wood GM, Bayrak-Toydemir P, Stevenson DA (2012). Hemangioma is associated with atopic disease. Otolaryngol Head Neck Surg, 146(2), 206-9. (Read full publication)
    26. Wooderchak-Donahue W, Stevenson DA, McDonald J, Grimmer JF, Gedge F, Bayrak-Toydemir P (2012). RASA1 analysis: Clinical and molecular findings in a series of consecutive cases. Eur J Med Genet, 55(2), 91-95.
    27. Grimmer JF, Williams MS, Pimentel R, Mineau G, Wood GM, Bayrak-Toydemir P, Stevenson DA (2011). Familial clustering of hemangiomas. Arch Otolaryngol Head Neck Surg, 137(8), 757-60. (Read full publication)
    28. Willis MW, Bonkowsky JL, Srivastava R, Grimmer JF (2011). Usefulness of airway evaluation in infants initially seen with an apparent life-threatening event. Arch Otolaryngol Head Neck Surg, 137(4), 359-62. (Read full publication)
    29. Kimball SJ, Park AH, Rollins MD 2nd, Grimmer JF, Muntz H (2010). A review of esophageal disc battery ingestions and a protocol for management. Arch Otolaryngol Head Neck Surg, 136(9), 866-71. (Read full publication)
    30. Yorgason JG, Park AH, Sturgill N, Grimmer JF, Alder SC (2010). The role of intraoperative auditory brainstem response testing for infants and difficult-to-test children. Otolaryngol Head Neck Surg, 142(1), 36-40. (Read full publication)
    31. Atkin JS, Grimmer JF, Hedlund G, Park AH (2009). Cochlear abnormalities associated with enlarged vestibular aqueduct anomaly. Int J Pediatr Otorhinolaryngol, 73(12), 1682-5. (Read full publication)
    32. Grimmer JF, Herway S, Hawkins JA, Park AH, Kouretas PC (2009). Long-term results of innominate artery reimplantation for tracheal compression. Arch Otolaryngol Head Neck Surg, 135(1), 80-4. (Read full publication)
    33. Poe DS, Grimmer JF, Metson R (2007). Laser eustachian tuboplasty: two-year results. Laryngoscope, 117(2), 231-7. (Read full publication)
    34. Grimmer JF, Hedlund G (2007). Vestibular symptoms in children with enlarged vestibular aqueduct anomaly. Int J Pediatr Otorhinolaryngol, 71(2), 275-82. (Read full publication)
    35. Grimmer JF, Mulliken JB, Burrows PE, Rahbar R (2006). Radiofrequency ablation of microcystic lymphatic malformation in the oral cavity. Arch Otolaryngol Head Neck Surg, 132(11), 1251-6. (Read full publication)
    36. Rahbar R, Grimmer JF, Vargas SO, Robson CD, Mack JW, Perez-Atayde AR, Marcus KJ, Grier HE, Healy GB, McGill TJ (2006). Mucoepidermoid carcinoma of the parotid gland in children: A 10-year experience. Arch Otolaryngol Head Neck Surg, 132(4), 375-80. (Read full publication)
    37. Grimmer JF, Gunnlaugsson CB, Alsberg E, Murphy HS, Kong HJ, Mooney DJ, Weatherly RA (2004). Tracheal reconstruction using tissue-engineered cartilage. Arch Otolaryngol Head Neck Surg, 130(10), 1191-6. (Read full publication)
    38. Wang W, Grimmer JF, Van De Water TR, Lufkin T (2004). Hmx2 and Hmx3 homeobox genes direct development of the murine inner ear and hypothalamus and can be functionally replaced by Drosophila Hmx. Dev Cell, 7(3), 439-53. (Read full publication)

    Book Chapter

    1. Grimmer JF, Jakubowski L (2016). Bronchoscopy. In Mattei P, Nichol PF, Rollins II MD, Muratore CS (Eds.), Fundamentals of Pediatric Surgery (2nd Edition, pp. 225-32). Springer.
    2. Grimmer JF (2012). Congenital Masses in the Neck. In Pediatric Otolaryngology - Principles and Practice Pathways (2). New York: Thieme.