Healthcare Providers & Facilities in Portsmouth, NH
Public healthcare directory of 1,865 individual practitioners and 385 healthcare facilities located in Portsmouth, New Hampshire.
Medical Specialties in Portsmouth
Select a specialty to view practitioner listings, practice locations, and qualifications.
Student in an Organized Health Care Education/Training Program
Social Worker - Clinical
Physical Therapist
Physician Assistant
Nurse Practitioner - Family
Internal Medicine
Family Medicine
Dentist - General Practice
Optometrist
Chiropractor
Emergency Medicine
Nurse Practitioner
All Specialties in Portsmouth
Specialties with enough public records for a comparison with U.S. figures, besides those named above, plus the 60 largest of 142 more with at least one listed practitioner. Number of practitioners in brackets.
Allopathic & Osteopathic Physicians
- Allergy & Immunology - Allergy (6)
- Anesthesiology (11)
- Anesthesiology - Pain Medicine (3)
- Dermatology (9)
- Hospitalist (4)
- Internal Medicine - Cardiovascular Disease (3)
- Internal Medicine - Gastroenterology (3)
- Internal Medicine - Hematology & Oncology (4)
- Internal Medicine - Infectious Disease (4)
- Internal Medicine - Nephrology (6)
- Neurological Surgery (3)
- Obstetrics & Gynecology (16)
- Ophthalmology (10)
- Pathology - Anatomic Pathology & Clinical Pathology (7)
- Pediatrics (14)
- Physical Medicine & Rehabilitation (10)
- Psychiatry & Neurology - Psychiatry (18)
- Radiology - Diagnostic Radiology (7)
- Surgery (9)
- Thoracic Surgery (Cardiothoracic Vascular Surgery) (5)
Behavioral Health & Social Service Providers
- Behavior Analyst (105)
- Behavior Technician (58)
- Clinical Neuropsychologist (3)
- Counselor (115)
- Counselor - Addiction (Substance Use Disorder) (16)
- Counselor - Mental Health (154)
- Marriage & Family Therapist (25)
- Psychologist - Clinical (18)
- Social Worker (45)
Dental Providers
Dietary & Nutritional Service Providers
Nursing Service Providers
Nursing Service Related Providers
- Home Health Aide (8)
- Nurse's Aide (5)
Other Service Providers
Pharmacy Service Providers
- Pharmacist (33)
- Pharmacy Technician (3)
Physician Assistants & Advanced Practice Nursing Providers
- Advanced Practice Midwife (8)
- Nurse Anesthetist, Certified Registered (15)
- Nurse Practitioner - Acute Care (3)
- Nurse Practitioner - Adult Health (6)
- Nurse Practitioner - Primary Care (3)
- Nurse Practitioner - Psychiatric/Mental Health (11)
- Nurse Practitioner - Women's Health (3)
- Physician Assistant - Medical (11)
- Physician Assistant - Surgical (9)
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Speech, Language and Hearing Service Providers
Featured Healthcare Providers in Portsmouth
Practitioner profiles in Portsmouth, NH with recent CMS Medicare or Open Payments data.
Dr. Natasha Baczewski , DPM
Podiatrist - Foot & Ankle Surgery
Dr. John Shearman , MD
Internal Medicine - Rheumatology
Dr. Katherine Hollister , MD
Internal Medicine
Dr. Jean Touchan , MD
Internal Medicine - Cardiovascular Disease
Megan Spurling , PA-C
Physician Assistant
Alexandra Dipietro , FNP-BC
Nurse Practitioner - Family
Largest Cities in New Hampshire
Other New Hampshire cities with a full directory, by the number of active practitioners listed in NPPES.
How Portsmouth compares with the U.S.
Compared with the U.S. as a whole, Portsmouth has more clinicians in Naturopath (43.5x), clinicians in Orthopaedic Surgery (9.6x) and Psychologists (6.9x) per 100,000 residents.
Portsmouth has 8,272 active clinicians per 100,000 residents, compared with 2,198 for the U.S.
What these numbers mean
Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.
A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.
City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.
92% of clinicians in Portsmouth listed in the CMS Medicare file (445 of 484) accept Medicare assignment. That is similar to the New Hampshire share of 93%.
Only 484 of 1,865 active clinicians in Portsmouth appear in the CMS Medicare file, so this share describes that smaller group.
What is Medicare assignment?
A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.
Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.
24% of clinicians in Portsmouth listed in the CMS Medicare file (116 of 484) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is similar to the New Hampshire share of 28%.
About the telehealth indicator
The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.
These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.
Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology
Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).
Portsmouth CMS Healthcare & Financial Disclosures
CMS Part D Prescribers (2024), Open Payments (program year 2025), Medicare (PECOS) enrollment and Part B (2024) data for Portsmouth, NH
Healthcare operations in Portsmouth, NH encompass 1,865 active individual practitioners and 385 registered medical facilities across 164 clinical specialties.
According to CMS Medicare Part D analytics for 2024, prescription drug volume in Portsmouth accounts for $44.5 Million across 239,874 prescription claims. 702 local practitioners have a Medicare (PECOS) enrollment record. Open Payments data for program year 2025 list $1.0 Million in payments reported by companies to 261 local practitioners; a reported payment does not necessarily mean the financial relationship is improper.