DR. WILLIAM R. RASSMAN, M.D.
Hair Restoration Surgeon | Medical Innovator | Author | Researcher
Managing Director, NHI Medical
Advisory Board Member, Mehr Society
PROFESSIONAL PROFILE
Dr. William R. Rassman is a pioneering physician and internationally recognized expert in hair restoration surgery. He has played a significant role in the development and advancement of modern surgical hair restoration, particularly in the evolution of follicular-unit-based transplantation and large-session hair transplantation.
Dr. Rassman founded the New Hair Institute (NHI) in 1992, establishing an organization dedicated exclusively to hair restoration. His work with Dr. Robert M. Bernstein contributed substantially to the development and advancement of Follicular Unit Transplantation (FUT) and modern approaches to natural-looking hair restoration.
He is also an accomplished medical author and researcher, with an extensive body of published work covering hair transplantation, follicular unit extraction, scalp micropigmentation, hairline design, donor-area management, graft survival, and other aspects of hair restoration.
He currently serves as Managing Director of NHI Medical and as an Advisory Board Member of Mehr Society.
CURRENT PROFESSIONAL POSITIONS
Managing Director
NHI Medical
Dr. Rassman currently serves as Managing Director of NHI Medical. His professional expertise encompasses surgical hair restoration, hair transplantation, follicular unit techniques, and the ongoing development of hair restoration technology and treatment strategies.
Advisory Board Member
Mehr Society
Dr. Rassman currently serves as an Advisory Board Member of Mehr Society, contributing his extensive experience and expertise in hair restoration surgery, medical innovation, education, and professional development.
AREAS OF EXPERTISE
- Hair Restoration Surgery
- Follicular Unit Transplantation (FUT)
- Follicular Unit Extraction (FUE)
- Hair Transplantation Planning
- Hairline Design and Hairline Maturation
- Large-Session Hair Transplantation
- Graft Survival and Handling
- Donor-Area Management
- Scalp Micropigmentation
- Hair Loss Diagnosis and Management
- Hair Restoration Technology
- Surgical Innovation
- Hair Restoration Research
- Medical Education
ResearchGate lists Dr. Rassman’s areas of expertise as General Surgery and Hair Restoration Surgery.
CONTRIBUTIONS TO HAIR RESTORATION
Dr. Rassman has been an important figure in the evolution of modern hair transplantation.
In collaboration with Dr. Robert M. Bernstein, his work helped establish the principles of using naturally occurring follicular units in hair transplantation. Their landmark work contributed to the development of modern Follicular Unit Transplantation, which subsequently became a foundational approach in contemporary hair restoration.
Dr. Rassman was also an early pioneer in large-session hair transplantation, dense packing, follicular unit techniques and the advancement of FUE technology.
RESEARCH & PUBLICATIONS
Dr. Rassman has an extensive academic and professional publication record.
His ResearchGate profile currently lists:
- 110 Publications
- 2,085+ Citations
- 51,000+ Reads
- Research interests including Hair Restoration Surgery and General Surgery.
Selected Publications & Contributions
Phenotype of Normal Hairline Maturation
Facial Plastic Surgery Clinics of North America, 2023
Automation for FUE Graft Handling
International Society of Hair Restoration Surgery, 2021
Tattoo Pigment Delivery with a Laser-Based Microjet Injector
2019
Scalp Micropigmentation (SMP), a Cosmetic Treatment for Hair Restoration in Asians
2018
Combining Follicular Unit Extraction and Scalp Micropigmentation for the Cosmetic Treatment of Alopecias
2017
Controversies: What is a Hair Transplant Megasession?
2017
Combining Scalp Micropigmentation (SMP) and Hair Transplantation
2016
Follicular Unit Extraction: Evolution of a Technology
2016
Scalp Micropigmentation: A Concealer for Hair and Scalp Deformities
2015
Hairline Evolution as Simple as ABC/123
2013
Pre-making Recipient Sites to Increase Graft Survival in Manual and Robotic FUE Procedures
2012
Hair Transplant Surgery in Men Under 24 Years of Age
2011
The History of Hair Transplantation
2008
Doctor’s (Patient’s) Guide to Estimating Transplant Grafts
2008
Follicular Unit Plain Speak: Hair Transplant Terminology
2007
FUE Megasessions — Evolution of a Technique
2004
Automation of Hair Transplantation
2002
The Automation of Hair Transplantation: Past, Present, and Future
2002
The Logic of Follicular Unit Transplantation
1999
Rapid Fire Hair Implanter Carousel: A New Surgical Instrument for the Automation of Hair Transplantation
1998
Micrografting in Extensive Quantities: The Ideal Hair Restoration Procedure
1995
The Measurement of Hair Density in the Diagnosis and Treatment of Hair Loss
1994
How to Calculate Graft Size
1993
The Art and Science of Minigrafting
1993
These publications span more than three decades of work in hair restoration and include research on FUT, FUE, graft handling, hairline design, scalp micropigmentation, donor-area assessment, and transplantation technology.
BOOKS & EDUCATIONAL CONTRIBUTIONS
Dr. William Rassman has co-authored several important educational resources on hair restoration, including:
The Patient’s Guide to Hair Restoration
Co-authored with Dr. Robert M. Bernstein.
The book explains the causes and diagnosis of hair loss and discusses medical and surgical approaches to hair restoration, including follicular unit transplantation.
The Guide to Hair Restoration
Co-authored with Dr. Robert M. Bernstein.
Hair Loss & Replacement For Dummies
Co-authored with:
- William R. Rassman, M.D.
- Robert M. Bernstein, M.D.
- Jae Pak
- Edward S. Schweiger
The book provides information on hair loss, medical treatment, hair transplantation, and hair restoration options.
PROFESSIONAL LEGACY
Dr. Rassman founded the New Hair Institute (NHI) in 1992 as an organization dedicated to hair restoration. His work helped advance large-session hair transplantation and follicular-unit-based techniques.
His collaboration with Dr. Robert Bernstein was particularly influential in the development of modern follicular-unit transplantation. Historical documentation from Bernstein Medical notes that their work helped establish the concept of transplanting naturally occurring individual follicular units to achieve more natural results.
Dr. Rassman has also contributed to the development and study of innovations involving:
- Follicular Unit Transplantation
- Follicular Unit Extraction
- Automated hair transplantation
- Graft handling
- Recipient-site preparation
- Scalp micropigmentation
- Hair-density measurement
- Hairline maturation
- Hair restoration instrumentation
SELECTED PATENTS & INNOVATION
Dr. Rassman has been involved in patented innovations related to hair restoration technology.
His published work includes patents concerning hair harvesting devices and methods, including techniques designed to stabilize the dermal area surrounding follicular units during harvesting.
PROFESSIONAL AFFILIATIONS & COLLABORATION
Throughout his career, Dr. Rassman has contributed to the international hair restoration community through:
- Scientific publications
- Professional lectures
- Research
- Medical education
- Surgical innovation
- Development of hair restoration techniques
- Collaboration with leading hair restoration physicians
His published work includes numerous contributions to the International Society of Hair Restoration Surgery (ISHRS) literature.
ADVISORY ROLE — MEHR SOCIETY
Advisory Board Member, Mehr Society
Dr. William R. Rassman currently serves as an Advisory Board Member of Mehr Society.
In this role, he brings decades of experience in hair restoration surgery, research, medical education, and innovation to support the Society’s professional and educational objectives.
His appointment reflects Mehr Society’s commitment to connecting leading international experts with physicians and professionals working to advance standards, knowledge, and innovation in hair restoration.
PROFESSIONAL HIGHLIGHTS
30+ years of published contribution to hair restoration
110+ publications listed on ResearchGate
2,000+ academic citations
Pioneer in modern hair restoration techniques
Co-author of major hair restoration educational books
Contributor to the development of follicular-unit-based transplantation
Researcher in FUT, FUE, scalp micropigmentation and hair restoration technology
Founder of New Hair Institute
Managing Director, NHI Medical
Advisory Board Member, Mehr Society
