NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1205811361 MD
Verify on CMS → Michael Siedlecki, MD
Nephrology Physician in St Petersburg, Florida.
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
2K
Medicare Part D claims · 162 beneficiaries · Nephrology Physician avg: 1K
Industry payments
$505.67
5 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Michael Siedlecki, MD filed 1,999 Medicare Part D claims in 2023 as a Nephrology Physician in St Petersburg, Florida.
- 2K
- Part D claims, 2023
- $505.67
- 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.
Michael Siedlecki, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,999 Top 16% higher than 84% 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)
Michael Siedlecki, MD 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 Michael Siedlecki, MD?
Quality data not reportedPrimary specialty
Nephrology Physician
Medicare Part D claims
1,999 37% vs specialty avg
Specialty distribution in Florida
How Nephrology Physician compares to other specialties among Florida 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).
Michael Siedlecki, MD appears in the CMS NPPES registry as a Nephrology Physician provider holding MD credentials at 1201 5TH AVE N, St Petersburg, FL, 33705, with a listed phone of (727) 821-2388. NPI 1205811361 was issued on 12/13/2005.
Medicare Part D records for calendar year 2023 show 1,999 prescription claims written by this provider, covering 162 Medicare beneficiaries and totaling roughly $873K 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 | 1205811361 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 12/13/2005 |
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 Michael Siedlecki, MD. Source: openpaymentsdata.cms.gov.
Total received
$506
Largest payer
Mallinckrodt Hospital Products Inc.
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.
License & disciplinary context - Florida FLDOH 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~75K Florida medical licensees in 2023 - they are NOT specific to Michael Siedlecki, MD. To verify Michael Siedlecki, MD's current license status, search the FLDOH public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
480
Total board actions, Florida 2023
Across 467 cases
6.40
Actions per 1,000 licensees
Florida statewide rate
monetary fine
Most common action type
138 cases
FLDOH publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Florida disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
1,999
Total Claims
$873K
Total Drug Cost
162
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,698
- Total Day Supply
- 109,200
- Generic Drug Cost
- $63K
- Antibiotic Claims
- 30
Patient Demographics
- Average Patient Age
- 68.5 years
- Avg HCC Risk Score
- 6.10
- Gender Split
- 40% female / 60% male
- Age Distribution
- <65: 51, 65-74: 57, 75-84: 36, 85+: 18
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Michael Siedlecki, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Losartan Potassium
Losartan Potassium
158 claims
- Farxiga
Farxiga
135 claims
- Sevelamer Carbonate
Sevelamer Carbonate
104 claims
- Velphoro
Velphoro
90 claims
- Amlodipine Besylate
Amlodipine Besylate
89 claims
- Atorvastatin Calcium
Atorvastatin Calcium
83 claims
- Kerendia
Kerendia
65 claims
- Metoprolol Succinate 62
Metoprolol Succinate
62 claims
| Drug | Claims |
|---|---|
| Losartan Potassium | 158 |
| Farxiga Dapagliflozin Propanediol | 135 |
| Sevelamer Carbonate | 104 |
| Velphoro Sucroferric Oxyhydroxide | 90 |
| Amlodipine Besylate | 89 |
| Atorvastatin Calcium | 83 |
| Kerendia Finerenone | 65 |
| Metoprolol Succinate | 62 |
| Pioglitazone Hcl | 49 |
| Furosemide | 48 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Michael Siedlecki, MD 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
Michael Siedlecki, MD's 1,999 claims are above the specialty average of 1,454.
Nearby Nephrology Physician Providers in Florida
Other clinicians with the same primary specialty enrolled in Florida, drawn from the same CMS NPPES roster as Siedlecki.
Dr. Fernando Abanilla
MD
Avon Park, FL
Fakhar Abbas
Plantation, FL
Dr. Lionel Abbott
MD
Orlando, FL
Dr. Beshoy Abdalla
DO
Tampa, FL
Dr. Layal Abdel Rahman
M.D.
Largo, FL
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 Florida 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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Medical Specialties Explained
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How insurance networks affect your costs
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Frequently Asked Questions
What is Michael Siedlecki, MD's specialty? ▼
Michael Siedlecki, MD specializes in Nephrology Physician and practices in St Petersburg, Florida. Credentials: MD.
How much does Michael Siedlecki, MD prescribe under Medicare Part D? ▼
In 2023, Michael Siedlecki, MD wrote 1,999 Medicare Part D claims totaling $873K in drug costs for 162 beneficiaries.
Where is Michael Siedlecki, MD located? ▼
Michael Siedlecki, MD is located at 1201 5TH AVE N, St Petersburg, FL, 33705. Phone: (727) 821-2388.
What is Michael Siedlecki, MD's NPI number? ▼
Michael Siedlecki, MD's National Provider Identifier (NPI) is 1205811361, issued on 12/13/2005.
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 Michael Siedlecki, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Michael Siedlecki, MD's most frequently prescribed drugs include Losartan Potassium, Farxiga, Sevelamer Carbonate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Michael Siedlecki, MD accept Medicare? ▼
Michael Siedlecki, MD appears in CMS Medicare data with 1,999 Part D claims and 162 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Michael Siedlecki, MD's credentials? ▼
Michael Siedlecki, MD's NPI is 1205811361 with credentials MD. 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.