2026 NPPES data Nurse Practitioner NPI 1295789329 NP
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Denise Viekman, NP

Nurse Practitioner in Portland, Maine. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers — including 87,227 in Nurse Practitioner, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration — see our methodology.

Federal data — no proprietary rating. We show these CMS records as-is — no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
985
Medicare Part D claims · 174 beneficiaries · Nurse Practitioner avg: 1K
Generic prescribing
51%
generic claims · 49% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$3.6K
124 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Denise Viekman, NP filed 985 Medicare Part D claims in 2023 as a Nurse Practitioner in Portland, Maine, prescribing 51% generic.

985
Part D claims, 2023
51%
generic prescribing
$3.6K
industry payments (Sunshine Act)

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.

Denise Viekman, NP's Medicare Part D volume vs every U.S. prescriber

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

985 Top 25% higher than 75% 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%). This entry sits in this band. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. 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 Denise Viekman, NP?

Quality data not reported

NPI registry status

Active

Issued 05/22/2006

NPI 1295789329

Primary specialty

Nurse Practitioner

High-volume

87,227 US NPIs in this specialty

Medicare Part D claims

985 9% vs specialty avg

2023 prescription claims

Specialty avg: 1,084

Specialty distribution in Maine

How Nurse Practitioner compares to other specialties among Maine providers

Maine providers

Largest specialties in Maine (% of in-state providers)

Clinical Social Worker — 10.2%Clinical Social Worker10.2%Physical Therapist — 5%Physical Therapist5%Pharmacist — 4.1%Pharmacist4.1%Occupational Therapist — 3.8%Occupational Therapist3.8%Family Medicine Physician — 3.5%Family Medicine Physician3.5%Speech-Language Pathologist — 3.5%Speech-Language Pathologist3.5%Nurse Practitioner — 1.4%Nurse Practitioner1.4%
Largest specialties in Maine (% of in-state providers)

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (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).

Denise Viekman, NP appears in the CMS NPPES registry as a Nurse Practitioner provider holding NP credentials at 195 FORE RIVER PKWY, Portland, ME, 04102, with a listed phone of (207) 774-9839. NPI 1295789329 was issued on 05/22/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Viekman 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 985 prescription claims written by this provider, covering 174 Medicare beneficiaries and totaling roughly $495K in drug spend, split 49% brand-name and 51% generic by claim count. 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.

Nurse Practitioner is a high-volume specialty nationwide, with 87,227 enrolled providers across 56 states and an average of 1,084 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

195 FORE RIVER PKWY
Portland, ME 04102

Provider Details

NPI 1295789329
Specialty Nurse Practitioner
Credentials NP
Gender Female
NPI Issued 05/22/2006

Hospital and facility affiliations

Facilities where Denise Viekman, NP 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.

Allergy And Asthma Associates OF Maine
Portland, ME

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

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Denise Viekman, NP. Source: openpaymentsdata.cms.gov.

Total received

$3.6K

Largest payer

AstraZeneca Pharmaceuticals LP

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Above average

Denise Viekman, NP — brand share 49.0%
Nurse Practitioner average

49% brand-name claims vs 51% generic, on 985 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.

985
Total Claims
$495K
Total Drug Cost
174
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,782
Total Day Supply
51,237
Brand vs Generic
49% brand / 51% generic
Brand Drug Cost
$469K
Generic Drug Cost
$26K
Antibiotic Claims
29

Patient Demographics

Average Patient Age
67.2 years
Avg HCC Risk Score
0.90
Gender Split
70% female / 30% male
Age Distribution
<65: 37, 65-74: 95, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What Denise Viekman, NP 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
Montelukast Sodium
158
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
86
Albuterol Sulfate Hfa
Albuterol Sulfate
71
Azelastine Hcl
66
Fluticasone Propionate
53
Advair Hfa
Fluticasone Propion/Salmeterol
52
Symbicort
Budesonide/Formoterol Fumarate
52
Flovent Hfa
Fluticasone Propionate
39
Epinephrine
35
Breo Ellipta
Fluticasone/Vilanterol
33

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

Nurse Practitioner Overview

How Denise Viekman, NP fits within the Nurse Practitioner landscape nationally.

87,227
Nurse Practitioner Providers in US
56
States with Nurse Practitioner
1,084
Avg Claims per Provider

Denise Viekman, NP's 985 claims are below the specialty average of 1,084.

Nearby Nurse Practitioner Providers in Maine

Other clinicians with the same primary specialty enrolled in Maine, drawn from the same CMS NPPES roster as Viekman.

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

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry — providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Maine medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Nurse Practitioner peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only — they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Denise Viekman, NP's specialty?
Denise Viekman, NP specializes in Nurse Practitioner and practices in Portland, Maine. Credentials: NP.
How much does Denise Viekman, NP prescribe under Medicare Part D?
In 2023, Denise Viekman, NP wrote 985 Medicare Part D claims totaling $495K in drug costs for 174 beneficiaries.
Where is Denise Viekman, NP located?
Denise Viekman, NP is located at 195 FORE RIVER PKWY, Portland, ME, 04102. Phone: (207) 774-9839.
What is Denise Viekman, NP's NPI number?
Denise Viekman, NP's National Provider Identifier (NPI) is 1295789329, issued on 05/22/2006.
Does Denise Viekman, NP prescribe more brand-name or generic drugs?
Denise Viekman, NP's prescribing is 49% brand-name and 51% generic drugs by claim count, with $469K in brand drug costs.
How many Nurse Practitioner providers are there in the US?
There are 87,227 Nurse Practitioner providers across 56 states in the US. The average Nurse Practitioner provider writes 1,084 Medicare Part D claims per year.
What drugs does Denise Viekman, NP prescribe most often?
Based on 2023 Medicare Part D data, Denise Viekman, NP's most frequently prescribed drugs include Montelukast Sodium, Trelegy Ellipta, Albuterol Sulfate Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Denise Viekman, NP accept Medicare?
Denise Viekman, NP appears in CMS Medicare data with 985 Part D claims and 174 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Denise Viekman, NP's credentials?
Denise Viekman, NP's NPI is 1295789329 with credentials NP. 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

Compiled from official public sources by the PlainDoctor editorial team.