Modern Primary Care Medicine

Preventative medicine designed to help you stay free from disease—living longer, healthier, and with more days full of energy and purpose.

The Old Medical Model

  • 6 hours

    Assessing the credibility of wellness trends on social media

  • 8 hours

    Looking for information on Google

  • 2 hours

    Searching through reviews on reliable doctors

  • 24 hours

    Waiting to be seen by doctors despite coming on time

  • 40 hours

    Overseeing the care of chronic conditions.

  • 96 hours

    Connecting specialists to emphasize a comprehensive, root-cause approach.

What Makes Onyx Different

ONYX

Annual Physical Exam

85+ Biomarker Analysis

Dexa Scan (Body Comp)

Vo2 Max Test

Personalized Care Program

Nutrition Services

Wearable Analysis

Fast Specialist Referrals

Exercise Medicine Coach

Pro-Active Healthcare

Results-Based Medicine

Mental Health Coach

Traditional Primary Care

Medication Management

Primary Preventative Care

By focusing on personalized health strategies, our primary care enables individuals to address potential issues before they develop into chronic conditions. This proactive approach supports longevity and sustained wellness by emphasizing consistent monitoring, lifestyle guidance, and timely interventions. Integrating primary care with fitness and wellness programs enhances overall performance and quality of life.

What is Our Primary Care Program?

Diagnostics and Introduction

  • Lifestyle Assessment

  • Past Medical History Review

  • Total Body Physical Exam

  • Body Composition Test (DEXA Scan)

  • VO2 Max Test

  • Lab Analysis of 85+ Biomarkers

  • Individualized Care Plan

Immediate Access to an Expert Team

  • A private team for you:

    • Board Certified Primary Care Physician

    • Doctor of Physical Therapy and Certified Strength and Conditioning Specialist

    • Registered Dietician

Continual Care

  • On-Demand Acute Care Visits

  • Unlimited Text Messaging With Your Team

  • 24/7 availability

  • Personalized nutrition

  • Personalized exercise

  • Wearable Analysis and Accountability

  • Supplement Recommendations

  • Fast-Tracked Specialist Referrals

BloodWork

Heart Health

ApoB:ApoA1 Ratio, Apolipoprotein A1, Apolipoprotein B, Total Cholesterol, HDL Cholesterol, LDL Cholesterol, LDL-C:ApoB Ratio, LDL-C:HDL-C Ratio, Lipoprotein(a), Total Cholesterol:HDL Ratio, Triglycerides, VLDL Cholesterol, VLDL Cholesterol (Calculated)

Inflammation

hs-CRP

Metabolic Health

Hemoglobin A1C %, Albumin, C-Peptide, Estimated Average Glucose, Triglycerides:HDL Ratio, Cortisol

Thyroid Health

Free T3:Free T4 Ratio, Free T4, Free T3, Thyroglobulin Antibody (TgAb), TSH, Thyroperoxidase Antibody (TPOAb), TSH:T4 Ratio

Prostate Health

PSA

Kidney Health

BUN, BUN:Creatinine Ratio, Creatinine, eGFR

Hormonal Health

% Free Testosterone, DHEA-S, DHEA-S:Cortisol Ratio, Estradiol (Sensitive), FSH, Free Androgen Index, LH:FSH Ratio, LH, Progesterone, Prolactin, SHBG, Free Testosterone (Calculated), Total Testosterone (Females), Total Testosterone (Males), Testosterone:Cortisol Ratio

Nutritional

25-OH Vitamin D, Calcium, Ferritin, Iron, Iron Saturation, Total Protein, UIBC

Liver Health

ALT, ALP, AST, AST:ALT Ratio, Direct Bilirubin, Total Bilirubin

ONYX

Focuses on maximizing attention to the client

Less than 1 week to wait to schedule an appointment

Less than 5 minute wait times

60+ minutes with the Doctor

Insurance-Based Model

Focuses on volume and turnover maximizing profits

3 month wait to schedule an appointment

30-60 minute wait times (or longer)

6 minutes with the Doctor

Meet Your Integrated Care Team

Dr. Kyle Mahoney, PT, DPT, CSCS

Kyle, a sports residency-trained Doctor of Physical Therapy and Certified Strength and Conditioning Specialist. An adjunct professor at Northeastern University and lab instructor at Massachusetts General Hospital Institute of Health Professions, he is well-versed in the latest scientific advancements and applies them in clinical practice. At Onyx, Kyle designs personalized exercise programs tailored to individual needs, utilizing extensive testing, movement screenings, clinical histories, and performance-driven goals.

Dr. Paul Heinzelmann, MD, MPH

Since 2005, Dr. Paul has been a trusted provider of primary and urgent care at Massachusetts General Hospital. After graduating from the University of Wisconsin School of Medicine and Harvard School of Public Health, and serving as a clinical instructor at Harvard Medical School, he committed to a "lifestyle medicine" approach to slow the progression of age-related diseases. Using advanced medical screenings and biomarkers, Dr. Paul determines precise health baselines for his patients. He then addresses any primary care concerns and works with the Onyx team to develop personalized programs to optimize long-term vitality.

Gianna Roma MS, RD, CNSC, CSSD

A Registered Dietician from Foxboro, MA, Gianna studied Nutritional Sciences at the University of Connecticut with a focus in sports nutrition. After working in the BIDMC critical care unit, interning with the New England Patriots, and creating the first nutritional program for the MA National Guard. She is passionate about educating individuals of all levels how to utilize nutrition as a resource for performance and health.  

Testimonials

“As a healthcare professional myself I appreciated your approach. The good results I am seeing is a direct result of your guidance and inspiration you give me. ”

Matthew

“I highly recommend Kyle as not only an excellent source of recovery, but as a person with honesty and integrity. You can trust his advice and council 100%.”

Danny Caverly, PGA Director of Instruction

“Kyle brings a unique skill set of physical therapy and sports training, which has finally gotten me on the right track. Perhaps even more significant, is his personality and caring approach to his craft. Kyle is an excellent listener who truly cares about his patients. He's a wonderful person, who I am very thankful to know. I highly recommend him!”

Mike

“He was professional, punctual, thorough and overall just an amazing therapist. Definitely recommend for anyone looking for optimal results!!”

Jenn