2026 NPPES data Family Nurse Practitioner NPI 1821023607 ARNP
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KATRINA DIEDERICHS, ARNP

Family Nurse Practitioner in DOVER, New Hampshire. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
8K
Medicare Part D claims · 519 beneficiaries · Family Nurse Practitioner avg: 1K
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

KATRINA DIEDERICHS, ARNP filed 8,053 Medicare Part D claims in 2023 as a Family Nurse Practitioner in DOVER, New Hampshire, prescribing 88% generic.

8K
Part D claims, 2023
88%
generic prescribing

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

KATRINA DIEDERICHS, ARNP's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

8,053 Top 3% higher than 97% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

What does the federal data show about KATRINA DIEDERICHS, ARNP?

Quality data not reported

NPI registry status

Active

Issued 07/11/2006

NPI 1821023607

Primary specialty

Family Nurse Practitioner

High-volume

209,817 US NPIs in this specialty

Medicare Part D claims

8,053 559% vs specialty avg

2023 prescription claims

Specialty avg: 1,222

Specialty distribution in New Hampshire

How Family Nurse Practitioner compares to other specialties among New Hampshire providers

New Hampshire providers

Family Nurse Practitioner share within New Hampshire

1. Family Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Family Nurse Practitioner share within New Hampshire

Specialty board-certification context

Estimated specialty board-certified rate — Family Nurse Practitioner (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Family Nurse Practitioner ABMS/AOA estimate

Est. board-certified rate (Family Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Family Nurse Practitioner) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

KATRINA DIEDERICHS, ARNP appears in the CMS NPPES registry as a Family Nurse Practitioner provider holding ARNP credentials at 10 MEMBERS WAY FL 5, DOVER, NH, 03820, with a listed phone of (603) 609-6800. NPI 1821023607 was issued on 07/11/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DIEDERICHS most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 8,053 prescription claims written by this provider, covering 519 Medicare beneficiaries and totaling roughly $784K in drug spend, split 12% brand-name and 88% generic by claim count, with an opioid prescribing rate of 2.0%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Family Nurse Practitioner is a high-volume specialty nationwide, with 209,817 enrolled providers across 56 states and an average of 1,222 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

10 MEMBERS WAY FL 5
DOVER, NH 03820

Provider Details

NPI 1821023607
Specialty Family Nurse Practitioner
Credentials ARNP
Gender Female
NPI Issued 07/11/2006

Hospital and facility affiliations

Facilities where KATRINA DIEDERICHS, ARNP bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

WENTWORTH DOUGLASS PHYSICIAN CORPORATION
DOVER, NH

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Typical

KATRINA DIEDERICHS, ARNP — brand share 12.0%
Specialty average (est.)

12% brand-name claims vs 88% generic, on 8,053 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

8,053
Total Claims
$784K
Total Drug Cost
519
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
17,736
Total Day Supply
520,809
Brand vs Generic
12% brand / 88% generic
Brand Drug Cost
$613K
Generic Drug Cost
$166K
Opioid Claims
162 (2.0% rate)
Antibiotic Claims
75

Patient Demographics

Average Patient Age
72.3 years
Avg HCC Risk Score
1.05
Gender Split
77% female / 23% male
Age Distribution
<65: 62, 65-74: 249, 75-84: 173, 85+: 35

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What KATRINA DIEDERICHS, ARNP prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Atorvastatin Calcium
465
Levothyroxine Sodium
368
Lisinopril
287
Amlodipine Besylate
280
Metoprolol Succinate
258
Losartan Potassium
192
Omeprazole
189
Rosuvastatin Calcium
180
Pantoprazole Sodium
172
Gabapentin
167

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Family Nurse Practitioner Overview

How KATRINA DIEDERICHS, ARNP fits within the Family Nurse Practitioner landscape nationally.

209,817
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,222
Avg Claims per Provider

KATRINA DIEDERICHS, ARNP's 8,053 claims are above the specialty average of 1,222.

Nearby Family Nurse Practitioner Providers in New Hampshire

Other clinicians with the same primary specialty enrolled in New Hampshire, drawn from the same CMS NPPES roster as DIEDERICHS.

Compare Family Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is KATRINA DIEDERICHS, ARNP's specialty?
KATRINA DIEDERICHS, ARNP specializes in Family Nurse Practitioner and practices in DOVER, New Hampshire. Credentials: ARNP.
How much does KATRINA DIEDERICHS, ARNP prescribe under Medicare Part D?
In 2023, KATRINA DIEDERICHS, ARNP wrote 8,053 Medicare Part D claims totaling $784K in drug costs for 519 beneficiaries.
Where is KATRINA DIEDERICHS, ARNP located?
KATRINA DIEDERICHS, ARNP is located at 10 MEMBERS WAY FL 5, DOVER, NH, 03820. Phone: (603) 609-6800.
What is KATRINA DIEDERICHS, ARNP's NPI number?
KATRINA DIEDERICHS, ARNP's National Provider Identifier (NPI) is 1821023607, issued on 07/11/2006.
Does KATRINA DIEDERICHS, ARNP prescribe more brand-name or generic drugs?
KATRINA DIEDERICHS, ARNP's prescribing is 12% brand-name and 88% generic drugs by claim count, with $613K in brand drug costs.
Does KATRINA DIEDERICHS, ARNP prescribe opioids?
Yes, KATRINA DIEDERICHS, ARNP had 162 opioid claims in 2023 with an opioid prescribing rate of 2.0%.
How many Family Nurse Practitioner providers are there in the US?
There are 209,817 Family Nurse Practitioner providers across 56 states in the US. The average Family Nurse Practitioner provider writes 1,222 Medicare Part D claims per year.
What drugs does KATRINA DIEDERICHS, ARNP prescribe most often?
Based on 2023 Medicare Part D data, KATRINA DIEDERICHS, ARNP's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KATRINA DIEDERICHS, ARNP accept Medicare?
KATRINA DIEDERICHS, ARNP appears in CMS Medicare data with 8,053 Part D claims and 519 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KATRINA DIEDERICHS, ARNP's credentials?
KATRINA DIEDERICHS, ARNP's NPI is 1821023607 with credentials ARNP. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology