NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1033793864 DO
Verify on CMS → Deven Voelker, DO
Internal Medicine Physician in Cedar Rapids, Iowa.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,737 in Internal Medicine Physician, 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
523
Medicare Part D claims · 96 beneficiaries · Internal Medicine Physician avg: 3K
Industry payments
$11.24
1 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Deven Voelker, DO filed 523 Medicare Part D claims in 2023 as an Internal Medicine Physician in Cedar Rapids, Iowa.
- 523
- Part D claims, 2023
- Likely
- board-certified (heuristic)
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.
Deven Voelker, DO's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
523 Top 34% higher than 66% 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
✓
Board certification likely (heuristic, not verified)
Deven Voelker, DO practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Deven Voelker, DO?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
523 81% vs specialty avg
Specialty distribution in Iowa
How Internal Medicine Physician compares to other specialties among Iowa providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Internal Medicine Physician. Verify directly:
How MIPS and board certification work
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).
Deven Voelker, DO appears in the CMS NPPES registry as an Internal Medicine Physician provider holding DO credentials at 1026 A AVE NE, Cedar Rapids, IA, 52402, with a listed phone of (319) 368-5970. NPI 1033793864 was issued on 05/07/2021.
Medicare Part D records for calendar year 2023 show 523 prescription claims written by this provider, covering 96 Medicare beneficiaries and totaling roughly $39K in drug spend, with an opioid prescribing rate of 3.4%.
Internal Medicine Physician is a high-volume specialty nationwide, with 172,737 enrolled providers across 56 states and an average of 2,716 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 | 1033793864 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | DO |
| Gender | Male |
| NPI Issued | 05/07/2021 |
Hospital and facility affiliations
Facilities where Deven Voelker, DO 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.
Iowa Physicians Clinic Medical Foundation
Cedar Rapids, IA
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 Deven Voelker, DO. Source: openpaymentsdata.cms.gov.
Total received
$11
Largest payer
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
523
Total Claims
$39K
Total Drug Cost
96
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,025
- Total Day Supply
- 28,932
- Generic Drug Cost
- $11K
- Opioid Claims
- 18 (3.4% rate)
- Antibiotic Claims
- 17
Patient Demographics
- Average Patient Age
- 75.9 years
- Avg HCC Risk Score
- 1.40
- Gender Split
- 55% female / 45% male
- Age Distribution
- <65: 11, 65-74: 31, 75-84: 31, 85+: 23
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Deven Voelker, DO prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
22 claims
- Losartan Potassium
Losartan Potassium
21 claims
- Omeprazole
Omeprazole
20 claims
- Atorvastatin Calcium
Atorvastatin Calcium
19 claims
- Metoprolol Succinate
Metoprolol Succinate
17 claims
- Latanoprost
Latanoprost
15 claims
- Amlodipine Besylate
Amlodipine Besylate
14 claims
- Escitalopram Oxalate
Escitalopram Oxalate
14 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 22 |
| Losartan Potassium | 21 |
| Omeprazole | 20 |
| Atorvastatin Calcium | 19 |
| Metoprolol Succinate | 17 |
| Latanoprost | 15 |
| Amlodipine Besylate | 14 |
| Escitalopram Oxalate | 14 |
| Simvastatin | 14 |
| Duloxetine Hcl | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Deven Voelker, DO fits within the Internal Medicine Physician landscape nationally.
172,737
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
Deven Voelker, DO's 523 claims are below the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Iowa
Other clinicians with the same primary specialty enrolled in Iowa, drawn from the same CMS NPPES roster as Voelker.
Dr. Baha Abbad
MD
Waterloo, IA
Dr. Shazia Abbas
MD
Ottumwa, IA
Dr. Abdullah Abbasi
MD
Iowa City, IA
Dr. Duane Abbott
MD
Des Moines, IA
Dr. Francois Abboud
MD
Iowa City, IA
Compare Internal Medicine Physician 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 Iowa medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Internal Medicine Physician 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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Medical Specialties Explained
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How insurance networks affect your costs
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Frequently Asked Questions
What is Deven Voelker, DO's specialty? ▼
Deven Voelker, DO specializes in Internal Medicine Physician and practices in Cedar Rapids, Iowa. Credentials: DO.
How much does Deven Voelker, DO prescribe under Medicare Part D? ▼
In 2023, Deven Voelker, DO wrote 523 Medicare Part D claims totaling $39K in drug costs for 96 beneficiaries.
Where is Deven Voelker, DO located? ▼
Deven Voelker, DO is located at 1026 A AVE NE, Cedar Rapids, IA, 52402. Phone: (319) 368-5970.
What is Deven Voelker, DO's NPI number? ▼
Deven Voelker, DO's National Provider Identifier (NPI) is 1033793864, issued on 05/07/2021.
Does Deven Voelker, DO prescribe opioids? ▼
Yes, Deven Voelker, DO had 18 opioid claims in 2023 with an opioid prescribing rate of 3.4%.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,737 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Deven Voelker, DO prescribe most often? ▼
Based on 2023 Medicare Part D data, Deven Voelker, DO's most frequently prescribed drugs include Levothyroxine Sodium, Losartan Potassium, Omeprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Deven Voelker, DO accept Medicare? ▼
Deven Voelker, DO appears in CMS Medicare data with 523 Part D claims and 96 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Deven Voelker, DO's credentials? ▼
Deven Voelker, DO's NPI is 1033793864 with credentials DO. 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
View source datasets and methodology notes
- 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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.