NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1194712927 M.D.
Verify on CMS → Piotr Dyk, M.D.
Nephrology Physician in Lake Saint Louis, Missouri.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 10,569 in Nephrology 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
879
Medicare Part D claims · 104 beneficiaries · Nephrology Physician avg: 1K
Industry payments
$65.5
6 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Piotr Dyk, M.D. filed 879 Medicare Part D claims in 2023 as a Nephrology Physician in Lake Saint Louis, Missouri.
- 879
- Part D claims, 2023
- $65.5
- 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.
Piotr Dyk, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
879 Top 27% higher than 73% 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-eligible specialty (heuristic, not verified)
Piotr Dyk, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Piotr Dyk, M.D.?
Quality data not reportedPrimary specialty
Nephrology Physician
Medicare Part D claims
879 40% vs specialty avg
Specialty distribution in Missouri
How Nephrology Physician compares to other specialties among Missouri 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 Nephrology 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).
Piotr Dyk, M.D. appears in the CMS NPPES registry as a Nephrology Physician provider holding M.D. credentials at 1000 EDGEWATER PT STE 303, Lake Saint Louis, MO, 63367, with a listed phone of (636) 265-2225. NPI 1194712927 was issued on 10/06/2005.
Medicare Part D records for calendar year 2023 show 879 prescription claims written by this provider, covering 104 Medicare beneficiaries and totaling roughly $116K in drug spend.
Nephrology Physician is a mid-sized specialty nationwide, with 10,569 enrolled providers across 55 states and an average of 1,454 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 | 1194712927 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 10/06/2005 |
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 Piotr Dyk, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$66
Largest payer
Novartis Pharmaceuticals Corporation
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.
879
Total Claims
$116K
Total Drug Cost
104
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,821
- Total Day Supply
- 53,087
- Generic Drug Cost
- $25K
- Antibiotic Claims
- 23
Patient Demographics
- Average Patient Age
- 72.0 years
- Avg HCC Risk Score
- 4.63
- Gender Split
- 42% female / 58% male
- Age Distribution
- <65: 21, 65-74: 42, 75-84: 26, 85+: 15
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Piotr Dyk, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Chlorthalidone
Chlorthalidone
86 claims
- Losartan Potassium
Losartan Potassium
72 claims
- Amlodipine Besylate
Amlodipine Besylate
56 claims
- Calcium Acetate
Calcium Acetate
51 claims
- Jardiance
Jardiance
47 claims
- Furosemide
Furosemide
46 claims
- Allopurinol
Allopurinol
41 claims
- Lisinopril
Lisinopril
41 claims
| Drug | Claims |
|---|---|
| Chlorthalidone | 86 |
| Losartan Potassium | 72 |
| Amlodipine Besylate | 56 |
| Calcium Acetate | 51 |
| Jardiance Empagliflozin | 47 |
| Furosemide | 46 |
| Allopurinol | 41 |
| Lisinopril | 41 |
| Sevelamer Carbonate | 30 |
| Torsemide | 29 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Piotr Dyk, M.D. fits within the Nephrology Physician landscape nationally.
10,569
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider
Piotr Dyk, M.D.'s 879 claims are below the specialty average of 1,454.
Nearby Nephrology Physician Providers in Missouri
Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as Dyk.
Dr. Fizza Abbas
MD
Saint Louis, MO
Dr. Christopher Abeid
M.D.
Florissant, MO
Dr. Ahmed Aboul-Magd
M.D.
Joplin, MO
Dr. Nadine Aboul-Magd
M.D.
Joplin, MO
Dr. Asad Al-Rawashdeh
MD
Joplin, MO
Compare Nephrology 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 Missouri medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Nephrology 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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Frequently Asked Questions
What is Piotr Dyk, M.D.'s specialty? ▼
Piotr Dyk, M.D. specializes in Nephrology Physician and practices in Lake Saint Louis, Missouri. Credentials: M.D..
How much does Piotr Dyk, M.D. prescribe under Medicare Part D? ▼
In 2023, Piotr Dyk, M.D. wrote 879 Medicare Part D claims totaling $116K in drug costs for 104 beneficiaries.
Where is Piotr Dyk, M.D. located? ▼
Piotr Dyk, M.D. is located at 1000 EDGEWATER PT STE 303, Lake Saint Louis, MO, 63367. Phone: (636) 265-2225.
What is Piotr Dyk, M.D.'s NPI number? ▼
Piotr Dyk, M.D.'s National Provider Identifier (NPI) is 1194712927, issued on 10/06/2005.
How many Nephrology Physician providers are there in the US? ▼
There are 10,569 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,454 Medicare Part D claims per year.
What drugs does Piotr Dyk, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Piotr Dyk, M.D.'s most frequently prescribed drugs include Chlorthalidone, Losartan Potassium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Piotr Dyk, M.D. accept Medicare? ▼
Piotr Dyk, M.D. appears in CMS Medicare data with 879 Part D claims and 104 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Piotr Dyk, M.D.'s credentials? ▼
Piotr Dyk, M.D.'s NPI is 1194712927 with credentials M.D.. 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
Compiled from official public sources by the PlainDoctor editorial team.
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.