Marissa Elizabeth Souther, MSN, APRN, FNP-C
Family Nurse Practitioner · Exeter, NH
Marissa Elizabeth Souther, MSN, APRN, FNP-C is a family nurse practitioner with a practice address in Exeter, New Hampshire, and NPI 1164986758, issued on Jan 28, 2019. Check the license (New Hampshire 114306-23, as entered in NPPES) with the New Hampshire board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marissa Elizabeth Souther
- Credential
- MSN, APRN, FNP-C
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 114306-23 NH
Self-reported in NPPES; status is on the state search - Practice location
- 21 Hampton RD Bldg 3, Exeter, NH 03833
- Phone
- (603) 775-0000
- Enumerated
- Jan 28, 2019
- Record last updated
- Jul 8, 2025
- Fax
- (603) 775-0247
- Medicare enrollment
- Enrolled (PECOS I20250627002409); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 1,377 in New Hampshire → Look up another NPI →
Also registered at 21 Hampton RD Bldg 3
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Rachael Comeau, N.PFamily Nurse Practitioner1407282080
- Kimberly DaigneaultFamily Nurse Practitioner1932633971
Verify Marissa Elizabeth Souther in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New Hampshire board licenses this profession
Search for license 114306-23Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% more Medicare Part D claims than the average family nurse practitioner in 2024
1,563 Medicare Part D claims for 159 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims. 25 claims were for opioids.
Most prescribed
- Atorvastatin Calcium116 claims
- Lisinopril87 claims
- Amlodipine Besylate86 claims
- Metformin Hcl80 claims
- Levothyroxine Sodium62 claims
- Pravastatin Sodium47 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Core Physicians LLCExeter, NH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marissa Elizabeth Souther among 1,377 family nurse practitioner records in New Hampshire
Marissa Elizabeth Souther, MSN, APRN, FNP-C is one of 1,377 family nurse practitioner records with a practice address in New Hampshire. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 58% of them.
- NPI issued2019 · 58% of these records are older, 36% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2018 · median 2018 among the 901 with a school on file
- Record last updated2025 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
31 family nurse practitioner records list a practice address in Exeter
They are 31 of the 704 NPPES records with a practice address in Exeter, and 1,377 family nurse practitioner records in New Hampshire.
All 1,377 in New Hampshire → Every provider in Exeter → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Pamela Binnie, NPExeter, NH 038331972869824
- Rachael Comeau, N.PExeter, NH 038331407282080
- Patricia Crothers, APRNExeter, NH 038331538108188
- Ingrid Gedraitis, APRNExeter, NH 038331821480849
- Cynthia Mackey, N.P.Exeter, NH 038331730518648
- Susan McKernan, ARNP APRN BCExeter, NH 038331164470522
- Sandra Merry, NPExeter, NH 038331235188236
- Elizabeth Palmer, ARNPExeter, NH 038331871706747
Common questions
What is Marissa Elizabeth Souther, MSN, APRN, FNP-C's NPI number?
Marissa Elizabeth Souther, MSN, APRN, FNP-C's National Provider Identifier (NPI) is 1164986758, issued on Jan 28, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Marissa Elizabeth Souther, MSN, APRN, FNP-C located?
The NPPES record lists a practice address at 21 Hampton RD Bldg 3, Exeter, NH, 03833. Phone: (603) 775-0000. Providers update this record themselves, so call before visiting.
How can I verify Marissa Elizabeth Souther, MSN, APRN, FNP-C's license?
NPPES lists New Hampshire license number 114306-23, as entered by the provider. Search the New Hampshire board that licenses this profession; the NPPES record confirms identity only.
How much does Marissa Elizabeth Souther, MSN, APRN, FNP-C prescribe under Medicare Part D?
In 2024, Marissa Elizabeth Souther, MSN, APRN, FNP-C had 1,563 Medicare Part D claims for 159 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.