NPPES file of Aug 9, 2026

Katrina Diederichs, ARNP

Family Nurse Practitioner · Dover, NH

Katrina Diederichs, ARNP is a family nurse practitioner with a practice address in Dover, New Hampshire, and NPI 1821023607, issued on Jul 11, 2006. Check the license (New Hampshire 031091-23, as entered in NPPES) with the New Hampshire board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1821023607
Name
Katrina Diederichs
Credential
ARNP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
031091-23 NH
Self-reported in NPPES; status is on the state search
Practice location
10 Members Way FL 5, Dover, NH 03820
Phone
(603) 609-6800
Enumerated
Jul 11, 2006
Record last updated
Mar 17, 2018 (not updated in 8 years: call before relying on the address or phone)
Medicaid ID
3087097 NH
Medicare enrollment
Enrolled (PECOS I20070510000037); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 10 Members Way FL 5

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Benjamin Arpin, P.A.Physician Assistant1144777293
  2. Seyma Bayram, M.D.Internal Medicine Physician1730874207
  3. Paul Berry, MDInternal Medicine Physician1548208796
  4. Jennifer Christiansen, APRNFamily Nurse Practitioner1609146562
  5. Kathleen Conway, APRNFamily Nurse Practitioner1043517485
  6. Courtney Coppola, APRNAdult Health Nurse Practitioner1134787294

Verify Katrina Diederichs in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich New Hampshire board licenses this profession
    Search for license 031091-23
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the New Hampshire license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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5.3 times the Medicare Part D claims of the average family nurse practitioner in 2024

6,869 Medicare Part D claims for 480 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 100 claims were for opioids.

  1. Katrina Diederichs6,869
  2. Specialty average1,305

Most prescribed

  1. Atorvastatin Calcium410 claims
  2. Levothyroxine Sodium328 claims
  3. Lisinopril278 claims
  4. Amlodipine Besylate269 claims
  5. Metoprolol Succinate233 claims
  6. Omeprazole183 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

  1. Wentworth Douglass Physician CorporationDover, NH

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Katrina Diederichs among 1,377 family nurse practitioner records in New Hampshire

Katrina Diederichs, ARNP 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 2006, is newer than 2% of them.

  • NPI issued2006 · 2% of these records are older, 85% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2002 · median 2018 among the 901 with a school on file
  • Record last updated2018 · 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).

46 family nurse practitioner records list a practice address in Dover

They are 46 of the 1,266 NPPES records with a practice address in Dover, and 1,377 family nurse practitioner records in New Hampshire.

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Cassandra Cavanaugh, ARNPDover, NH 038201063581346
  2. Roberta Compagna, ARNPDover, NH 038201669652301
  3. Kathleen Conway, APRNDover, NH 038201043517485
  4. Stephanie Estrada, APRNDover, NH 038201336452796
  5. Faye Fitzgerald, ARNPDover, NH 038201003872532
  6. Susan Gosselin, APRNDover, NH 038201366721839
  7. Rebecca Gray, APRNDover, NH 038201255387882
  8. Pamela Lord-Voshell, NPDover, NH 038201295067221

Common questions

What is Katrina Diederichs, ARNP's NPI number?

Katrina Diederichs, ARNP's National Provider Identifier (NPI) is 1821023607, issued on Jul 11, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Katrina Diederichs, ARNP located?

The NPPES record lists a practice address at 10 Members Way FL 5, Dover, NH, 03820. Phone: (603) 609-6800. Providers update this record themselves, so call before visiting.

How can I verify Katrina Diederichs, ARNP's license?

NPPES lists New Hampshire license number 031091-23, as entered by the provider. Search the New Hampshire board that licenses this profession; the NPPES record confirms identity only.

How much does Katrina Diederichs, ARNP prescribe under Medicare Part D?

In 2024, Katrina Diederichs, ARNP had 6,869 Medicare Part D claims for 480 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.