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Healthcare Providers & Facilities in Merrimack, NH

Public healthcare directory of 273 individual practitioners and 85 healthcare facilities located in Merrimack, New Hampshire.

273 Practitioners
85 Facilities
63 Specialties

Medical Specialties in Merrimack

Select a specialty to view practitioner listings, practice locations, and qualifications.

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All Specialties in Merrimack

Specialties with enough public records for a comparison with U.S. figures, plus 60 more with at least one listed practitioner. Number of practitioners in brackets.

Chiropractic Providers

Dietary & Nutritional Service Providers

Eye and Vision Services Providers

Nursing Service Providers

Nursing Service Related Providers

Pharmacy Service Providers

Podiatric Medicine & Surgery Service Providers

Featured Healthcare Providers in Merrimack

Practitioner profiles in Merrimack, NH with recent CMS Medicare or Open Payments data.

Kaitlin Bouley , MS, APRN, AGNP-C

Nurse Practitioner - Adult Health

7 Executive Park Dr, Merrimack, NH
Phone: 6038822941
NPI 1396254470

Melanie Chhoeun , PA-C

Physician Assistant

Medicare Accepted
2 Dobson Way, Merrimack, NH
Phone: 6034716069
NPI 1760116917

Kimberly Champagne-Vigeant , APRN

Nurse Practitioner - Family

1 Mound Ct, Merrimack, NH
Phone: 6034248866
NPI 1679033690

Dr. Matthew Francis , OD

Optometrist

Medicare Accepted
370 Daniel Webster Hwy, Merrimack, NH
Phone: 6034240404
NPI 1245324284

Wanda Lanigan , PMHNP-BC

Nurse Practitioner - Psychiatric/Mental Health

22 Greeley St Ste 23, Merrimack, NH
Phone: 6034840035
NPI 1669115853

Dr. Mark Morris , DDS

Dentist - General Practice

75 Daniel Webster Hwy, Merrimack, NH
Phone: 6034247575
NPI 1366768855

Largest Cities in New Hampshire

Other New Hampshire cities with a full directory, by the number of active practitioners listed in NPPES.

How Merrimack compares with the U.S.

For the 3 specialties with enough data, the number of clinicians per 100,000 residents in Merrimack is close to the U.S. rate.

Merrimack has 969 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.

92% of clinicians in Merrimack listed in the CMS Medicare file (56 of 61) accept Medicare assignment. That is similar to the New Hampshire share of 93%.

Only 61 of 273 active clinicians in Merrimack 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.

34% of clinicians in Merrimack listed in the CMS Medicare file (21 of 61) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than 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).

Merrimack CMS Healthcare & Financial Disclosures

CMS Part D Prescribers (2024), Open Payments (program year 2025), Medicare (PECOS) enrollment and Part B (2024) data for Merrimack, NH

Source: CMS public datasets

Healthcare operations in Merrimack, NH encompass 273 active individual practitioners and 85 registered medical facilities across 63 clinical specialties.

According to CMS Medicare Part D analytics for 2024, prescription drug volume in Merrimack accounts for $3.9 Million across 46,774 prescription claims. 100 local practitioners have a Medicare (PECOS) enrollment record. Open Payments data for program year 2025 list $0.0 Million in payments reported by companies to 32 local practitioners; a reported payment does not necessarily mean the financial relationship is improper.

Medicare Part D Prescriptions (2024) $3.9M 46,774 Prescription Claims Source: data.cms.gov
Open Payments Sunshine Act (2025) $0.0M 32 Recipients Disclosed A reported payment does not necessarily mean the financial relationship is improper. Source: openpaymentsdata.cms.gov
Medicare (PECOS) Enrollment 100 Enrolled Medicare Practitioners Source: data.cms.gov
Medicare Part B Allowed Volume (2024) $3.3M 71,749 Services Performed Source: data.cms.gov

CMS PECOS: Eligible to Order or Refer for Medicare in Merrimack

Part B Lab & Imaging Eligible: 67
Durable Medical Equipment (DME): 69
Home Health Agency (HHA): 63
Source: CMS Order and Referring