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.
Source: CMS Medicare Part D Prescriber Public Use File, 2023
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
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 reportedPrimary specialty
Medicare Part D claims
Specialty distribution in Maine
How Nurse Practitioner compares to other specialties among Maine providers
Largest specialties in Maine (% of in-state providers)
Nurse Practitioner ranks #19 among Maine's specialties (1.4% of in-state providers)
Each bar is a specialty's share of the Maine provider total, by primary NUCC taxonomy. The highlighted bar is Nurse Practitioner; the long tail of smaller specialties is omitted for legibility.
Specialty board-certification context
Estimated specialty board-certified rate — Nurse Practitioner (ABMS / AOA reference)
- Est. board-certified rate
- 78%
- Nurse Practitioner ABMS/AOA estimate
Est. board-certified rate (Nurse Practitioner) — ABMS / AOA estimate
Verify credentials
- Verify via ABMS free public lookup
- Verify via AOA osteopathic boards
- Specialty volume Nurse Practitioner US NPIs
Specialty board-certified rate — Nurse Practitioner estimate
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus Maintenance of Certification cycles. CMS does not publish a per-provider board-certification field; the figure shown is the specialty-level estimated rate from ABMS / AOA reference data.
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
Provider Details
| NPI | 1295789329 |
|---|---|
| Specialty | Nurse Practitioner |
| Credentials | NP |
| Gender | Female |
| NPI Issued | 05/22/2006 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm Denise Viekman, NP's current license status, disciplinary history, and board certifications with the Maine Board of Licensure in Medicine in Maine before relying on this page for a clinical or care decision.
How we sourced this profile
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.
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
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.
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
- Montelukast Sodium
Montelukast Sodium
158 claims
- Trelegy Ellipta
Trelegy Ellipta
86 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
71 claims
- Azelastine Hcl
Azelastine Hcl
66 claims
- Fluticasone Propio… 53
Fluticasone Propionate
53 claims
- Advair Hfa 52
Advair Hfa
52 claims
- Symbicort 52
Symbicort
52 claims
- Flovent Hfa 39
Flovent Hfa
39 claims
| 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.
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.
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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