Meet Our Team
Botox & Filler Experts Rhode Island

Our Mission

Simply Injectables RI is Rhode Island’s most experienced Botox and dermal filler clinic — and one of the most decorated injectable practices in the country. As a Top 250 Allergan Diamond provider, we rank in the top 1% of all med spas in the United States out of more than 44,000 practices nationwide. That isn’t a marketing claim. It’s a verified ranking earned by real patient volume, real results, and over 15 years of daily clinical injectable experience.

We started as a hyper-focused injectable spa specializing in Botox and dermal fillers — and we have never lost that focus. But we have grown. Today Simply Injectables also offers BBL Hero light therapy, advanced microneedling, IPL photofacial treatments, Radiesse, Hyperdilute Radiesse, biostimulators including Sculptra, Kybella, and medically supervised semaglutide and tirzepatide weight management — all under the same roof, delivered by the same trusted team, with the same commitment to natural, refreshed results that have defined us from day one.

Our goal has always been simple: give every patient access to the most experienced providers and the most advanced treatments at a price point that is accessible to everyone. Because of our volume and our Allergan partnership, we receive significant manufacturer discounts — and we pass every dollar of those savings directly to you. Experience this level. Price it fairly. That is Simply Injectables.

Providers at Simply Injectables are set apart from other providers by:

  • Educating clients on the why behind recommendations
  • Customizing assessments and plans to each individual’s needs
  • Stating cost prior to procedures
  • Creating a look that is natural, refreshed, and glowing
  • Creating long-lasting relationships based on trust and reliability

Our Mission

A hyper-focused injectables spa with medical professionals you can trust. Specializing in only neurotoxin and dermal fillers, we’ve perfected our craft to give you results you can trust.

Providers at Simply Injectables are set apart from other providers by:

  • Educating clients on the why behind recommendations
  • Customizing assessments and plans to each individual’s needs
  • Stating cost prior to procedures
  • Creating a look that is natural, refreshed, and glowing
  • Creating long-lasting relationships based on trust and reliability

Our Team

richard owner operator ri medspa providence

Richard Kratzenberg, PA-C

Physician Assistant

Richard M. Kratzenberg, PA-C, is one of the most experienced Botox and dermal filler injectors in Rhode Island, with a clinical career in cosmetic injectables that began in 2009. As a board-certified Physician Assistant and the founder of Simply Injectables RI, Richard has spent over 15 years refining the art of natural-looking Botox, lip fillers, cheek fillers, and full-face rejuvenation — treating approximately 20 patients per day across two thriving practices.

Richard’s journey into aesthetic injectables started where few others can claim: pain management. Fresh out of the Massachusetts College of Pharmacy and Health Sciences, where he earned his Master’s in Physician Assistant Studies, Richard received his first formal training in Botox injections for medical applications — including headache treatment and masseter injections for jaw slimming — skills that laid an unusually rigorous clinical foundation for his future in aesthetics.

Seeking deeper expertise in skin, Richard went on to train under a nationally renowned dermatologist in New York City — a mentor who was, by any measure, well ahead of his time. Under his guidance, Richard mastered cheek filler injections, advanced botulinum toxin techniques, topical treatments, and laser therapies at a time when many of these approaches hadn’t yet entered mainstream aesthetic training. Trusted to independently run dermatology offices in Park Slope, Brooklyn and on 86th and Park in Manhattan, Richard developed the kind of high-volume, high-precision skillset that simply cannot be taught in a weekend course.

That expertise followed him to Denver, Colorado, where he joined a local medical spa and helped build it into a top 20 Allergan clinic in the United States — out of over 44,000 med spas nationwide. Recognizing it was time to build something of his own, Richard founded Simply Injectables in Denver in 2014. For over a decade, he flew to Denver monthly — working Friday through Monday and seeing upwards of 120 patients per visit — growing the clinic into a beloved institution and training four injectors who now co-own and operate the business.

When his partner’s career brought them to Rhode Island, Richard did what he does best: he built again. Simply Injectables RI has grown into the largest injectable clinic in Rhode Island by patient volume, earning recognition as a Top 250 Allergan Diamond partnership — a designation that places it in the top 1% of Botox and filler providers in the country. At one point the combined clinics ranked in the top 100 Allergan practices in the US — out of 44,000 competitors.

What sets Richard apart isn’t just volume — it’s philosophy. His approach to Botox, lip filler, cheek filler, jawline contouring, Radiesse, Hyperdilute Radiesse, and full-face injectable treatments is rooted in a commitment to natural, refreshed results that build beautifully over time. He and his team conduct quarterly training sessions with leading plastic surgeons, dermatologists, nurse practitioners, and master injectors to ensure their techniques remain at the forefront of the field.

Because Simply Injectables operates at significant scale, Richard is able to leverage manufacturer-level pricing from Allergan and other top aesthetic brands — and passes those savings directly to patients. His belief is simple: everyone deserves access to skilled, safe, and beautiful injectable treatments. Low prices here are not a reflection of inexperience — they are a reflection of volume, loyalty, and a genuine commitment to making aesthetic medicine accessible to all.

Richard holds a Bachelor of Science in Microbiology from the University of Rhode Island and a Master’s in Physician Assistant Studies from the Massachusetts College of Pharmacy and Health Sciences.

darlene injectable nurse rhode island

Darlene Amoroso, BA RN

Registered Nurse

Darlene Amoroso brings something to the aesthetic chair that is genuinely rare in a med spa setting: nearly a decade of specialized injectable experience built on top of 26 years as a registered nurse in one of the most demanding clinical environments imaginable — the critical care unit at Hasbro Children’s Hospital. When your nursing career is built around caring for critically ill children, precision, sterile protocol, and composure under pressure aren’t skills you develop — they become second nature. That foundation is present in everything Darlene does. A graduate of Providence College, Darlene joined Simply Injectables and trained directly under Richard Kratzenberg, PA-C — one of the most experienced injectable providers in the country — before building one of the most loyal patient followings in Rhode Island. Seeing 15 to 20 patients per day, her cumulative hands-on experience with Botox, Dysport, and the full Juvederm family of dermal fillers places her well beyond the experience level of most injectors currently practicing in aesthetic medicine. Her formal injectable training is equally impressive. Darlene is certified through the Allergan Medical Institute Hands-On Training Program in the complete Juvederm portfolio — including Voluma XC, Volux XC, Volbella, Juvederm Ultra Plus, Vollure, and Skinvive — meaning she is credentialed in every product in one of the most comprehensive filler families available. She has also completed dedicated Botox and Dysport training and holds certifications in two of the most advanced device-based treatments offered at Simply Injectables: Collagen P.I.N. microneedling certification through Induction Therapies and the Sciton mJoule Operator Training Certification for BBL Hero — the gold-standard light-based skin rejuvenation platform. Darlene’s specialty is the art of facial balance. Her favorite patient is someone who has never had filler before — a fresh canvas where she can assess facial structure holistically, identify asymmetries, and create true harmony using strategic placement across the cheeks, lips, jawline, chin, and under-eye areas. She approaches every face as a whole, not a collection of isolated concerns, and the results have earned her a fiercely loyal following that has returned to her chair for years. She is equally sought after for corrective injectable work — specifically dissolving and reversing filler from patients who have been overfilled elsewhere. Restoring a natural, balanced appearance from a heavily treated face is among the most technically demanding work in aesthetic medicine, and it is a testament to Darlene’s anatomical understanding and clinical skill that patients seek her out specifically for this. Beyond injectables, Darlene offers advanced microneedling using Collagen P.I.N. — a faster, more comfortable, and more effective next-generation microneedling technology that outperforms traditional devices for skin texture, acne scarring, fine lines, and collagen stimulation — and BBL Hero treatments via the Sciton mJoule platform, the most advanced IPL photofacial technology available for sun damage, redness, pigmentation, and overall skin rejuvenation. Darlene’s commitment to continuing education goes beyond the mandatory quarterly training sessions all Simply Injectables providers complete. She pursues independent study on her own time — researching emerging techniques and refining her approach because better outcomes for her patients are what genuinely motivate her. Her passion, in her own words, is elevating her clients’ confidence — helping them look their best while celebrating their natural features. A note for new patients in Rhode Island: Due to current Rhode Island regulations governing RN injectors, new patients are required to first be seen by Richard Kratzenberg, PA-C or Michelle Leveillee, AGACNP before scheduling with Darlene. We know that adds a step and we appreciate your patience — because once you are in our practice, Darlene’s schedule is absolutely worth it. Existing patients may continue to book with Darlene directly.
Brendan Carolan Medical Director Injector medspa ri

Brendan J. Carolan, MD

Medical Director · Board-Certified Internal Medicine, Pulmonary & Critical Care Medicine

Dr. Brendan Carolan brings a level of medical credentialing to Simply Injectables that is extraordinarily rare in the aesthetic space. A graduate of University College Dublin, where he earned his MB, BCh, BAO, and BMedSc with First Class Honors, Dr. Carolan holds a Doctorate in Medicine from Weill Cornell Medical College, completed his US residency and fellowship training at Weill Cornell Medical Center and New York Presbyterian Hospital, and is triple board-certified in Internal Medicine, Pulmonary Diseases, and Critical Care Medicine through the American Board of Internal Medicine. He also holds Membership of the Royal College of Physicians of Ireland.

Dr. Carolan has served as Medical Director of Simply Injectables since its founding — overseeing both the Denver and Rhode Island locations — and is trained in Botox, dermal fillers, microneedling, and laser treatments, maintaining his clinical skill set alongside his role in medical oversight.

In practice, Dr. Carolan’s most important function at Simply Injectables is the one patients almost never need — and that’s exactly the point. Aesthetic medicine, performed well, is extremely safe. But having a physician of Dr. Carolan’s caliber available for clinical consultation means our team can handle every outcome with full medical confidence. From post-procedure swelling requiring a precisely weight-dosed oral steroid, to any question that falls outside the everyday injectable toolkit, Dr. Carolan is the resource our team calls. His background in critical care — where managing complex, high-stakes patient situations is second nature — means we are never without an answer.

At Simply Injectables, we pride ourselves on being not just exceptional injectors, but a genuinely complete medical team. Day-to-day clinical oversight is provided by Michelle Leveillee, AGACNP. Dr. Carolan’s role ensures that above that, there is always an MD with critical care training available when real medical judgment is needed. That collaborative model — the same one used throughout the best medical institutions in the country — is what separates us from a typical med spa.

Our Team

Richard Kratzenberg, PA-C

Physician Assistant

Richard received his post-graduate training from board certified physicians in the areas of dermatology and anesthesiology. After completing his training in dermatology, he managed dermatology offices in Manhattan and Brooklyn in New York City.

In 2012, Richard moved to Denver, CO, where he joined a medical spa and helped to build it into one of the most successful injectable clinics in the United States. With over five years of experience in cosmetic dermatology and aesthetic enhancement procedures, he has performed thousands of successful injectable procedures, including Botox and fillers.

In 2014, Richard founded Simply Injectables, a medical spa focused on providing quality, affordable and skilled cosmetic injections that result in a natural, youthful appearance.

Simply Injectables founder, Richard Kratzenberg, is a board certified Physician Assistant under the supervision of B. J. Carolan, M.D., a physician board certified in Internal Medicine, Pulmonary Diseases and Critical Care Medicine. Richard graduated from the Massachusetts College of Pharmacy and Health Sciences with a Masters degree in Physician Assistant Studies. Richard has a baccalaureate of science degree in Microbiology from the University of Denver.

When not performing injections, Richard can be found hiking and skiing across the Colorado Rockies, or enjoying the swimming and boating of his native Northeast Atlantic Ocean. Between jaunts to the Rockies and dips in the Atlantic, he loves to travel. Delicious cuisine, beautiful places, wonderful people, and unique cultures makes travel his favorite pastime.

Darlene Amoroso, RN

Registered Nurse

Darlene is a graduate of Providence College, and has been practicing as a registered nurse for the past 26 years in a critical care setting.

She joined Simply Injectables in the summer of 2019. Her initial training included months of rigorous practice with the owner, Richard Kratzenberg, who offers more than 12 years of injecting experience.

In addition to mastering Richard’s specific techniques for injecting Botox and fillers, Darlene attended multiple Allergan/Galderma/Merz masterclass training sessions. These advanced training classes were conducted by board certified physicians in the areas of plastics, oculoplastic, and dermatology.

Darlene offers a refined skill set specifically geared toward providing natural results.. She provides a relaxed, compassionate, and friendly approach to ensure all of her clients feel comfortable and welcome.

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