NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1215906771 M.D.
Verify on CMS → David Rosnack, M.D.
Nephrology Physician in Georgetown, South Carolina.
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
1K
Medicare Part D claims · 246 beneficiaries · Nephrology Physician avg: 1K
Generic prescribing
80%
generic claims · 20% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
45.8/100
▼ 37 pts below national avg 83.1 · Below average
Industry payments
$314.78
15 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
David Rosnack, M.D. reported a CMS MIPS final score of 45.8/100 - below the 83.1 national average - and filed 1,375 Medicare Part D claims in 2023.
- 45.8/100
- MIPS score · -37 vs avg
- 1K
- Part D claims, 2023
- 80%
- generic prescribing
- 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.
David Rosnack, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
46 4th percentile higher than 4% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where David Rosnack, M.D. sits
This provider among nephrology physician peers
Across the 2,476 nephrology physician providers who report both Medicare Part D prescribing and a MIPS quality score, David Rosnack, M.D. writes more Part D claims than 58% of them and scores higher on MIPS quality than 14% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one nephrology physician peer from a representative sample of 60; the gold marker is David Rosnack, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
David Rosnack, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 David Rosnack, M.D.?
Below national averagePrimary specialty
Nephrology Physician
Medicare Part D claims
1,375 5% vs specialty avg
MIPS final score
45.8/100 37.3 pts vs avg
Specialty distribution in South Carolina
How Nephrology Physician compares to other specialties among South Carolina providers
Medicare quality performance, MIPS
David Rosnack, M.D.'s 2023 MIPS final score plotted against the Nephrology Physician national average
- MIPS Final Score
- 45.8/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Nephrology Physician) - 45.8/100 vs national avg 83.1
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).
David Rosnack, M.D. appears in the CMS NPPES registry as a Nephrology Physician provider holding M.D. credentials at 1052A HUGER DR, Georgetown, SC, 29440, with a listed phone of (843) 546-0223. NPI 1215906771 was issued on 03/16/2006.
Medicare Part D records for calendar year 2023 show 1,375 prescription claims written by this provider, covering 246 Medicare beneficiaries and totaling roughly $335K in drug spend, split 20% brand-name and 80% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 45.8/100 for the 2023 performance year (Quality 39.5, Cost 23.1), compared with the national average of 83.1.
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 | 1215906771 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 03/16/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
45.7654
Final Score
Avg: 83.1
39.4743
Quality
23.077
Cost
28
Promoting Interoperability
Reporting: Individual
Hospital and facility affiliations
Facilities where David Rosnack, M.D. 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.
Waccamaw Kidney And Hypertension Specialists,p.a.
Georgetown, SC
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 David Rosnack, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$315
Largest payer
CALLIDITAS THERAPEUTICS US 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.
Brand vs generic prescribing mix · Typical
David Rosnack, M.D. - brand share 20.0%
Nephrology Physician average
20% brand-name claims vs 80% generic, on 1,375 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.
1,375
Total Claims
$335K
Total Drug Cost
246
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,486
- Total Day Supply
- 72,918
- Brand vs Generic
- 20% brand / 80% generic
- Brand Drug Cost
- $264K
- Generic Drug Cost
- $71K
- Antibiotic Claims
- 37
Patient Demographics
- Average Patient Age
- 70.3 years
- Avg HCC Risk Score
- 5.07
- Gender Split
- 54% female / 46% male
- Age Distribution
- <65: 71, 65-74: 71, 75-84: 80, 85+: 24
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What David Rosnack, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Sevelamer Carbonate
Sevelamer Carbonate
164 claims
- Furosemide
Furosemide
83 claims
- Calcitriol
Calcitriol
79 claims
- Amlodipine Besylate
Amlodipine Besylate
77 claims
- Farxiga
Farxiga
72 claims
- Nifedipine Er 51
Nifedipine Er
51 claims
- Losartan Potassium 44
Losartan Potassium
44 claims
- Hydralazine Hcl 42
Hydralazine Hcl
42 claims
| Drug | Claims |
|---|---|
| Sevelamer Carbonate | 164 |
| Furosemide | 83 |
| Calcitriol | 79 |
| Amlodipine Besylate | 77 |
| Farxiga Dapagliflozin Propanediol | 72 |
| Nifedipine Er Nifedipine | 51 |
| Losartan Potassium | 44 |
| Hydralazine Hcl | 42 |
| Auryxia Ferric Citrate | 39 |
| Renvela Sevelamer Carbonate | 37 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How David Rosnack, 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
David Rosnack, M.D.'s 1,375 claims are below the specialty average of 1,454.
Nearby Nephrology Physician Providers in South Carolina
Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as Rosnack.
Dr. Ahmed Abdelkader
MD, PHD
Charleston, SC
Dr. George Acres
MD
Greenville, SC
Dr. Frederick Adams
MD
Spartanburg, SC
Chokri Alioua
Greenville, SC
Dr. Mhd Alsaka
MD
Florence, SC
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 South Carolina 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 David Rosnack, M.D.'s specialty? ▼
David Rosnack, M.D. specializes in Nephrology Physician and practices in Georgetown, South Carolina. Credentials: M.D..
How much does David Rosnack, M.D. prescribe under Medicare Part D? ▼
In 2023, David Rosnack, M.D. wrote 1,375 Medicare Part D claims totaling $335K in drug costs for 246 beneficiaries.
What is David Rosnack, M.D.'s Medicare quality score? ▼
David Rosnack, M.D. has a CMS MIPS Final Score of 45.8/100 (Quality: 39.5, Cost: 23.1). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is David Rosnack, M.D. located? ▼
David Rosnack, M.D. is located at 1052A HUGER DR, Georgetown, SC, 29440. Phone: (843) 546-0223.
What is David Rosnack, M.D.'s NPI number? ▼
David Rosnack, M.D.'s National Provider Identifier (NPI) is 1215906771, issued on 03/16/2006.
Does David Rosnack, M.D. prescribe more brand-name or generic drugs? ▼
David Rosnack, M.D.'s prescribing is 20% brand-name and 80% generic drugs by claim count, with $264K in brand drug costs.
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 David Rosnack, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, David Rosnack, M.D.'s most frequently prescribed drugs include Sevelamer Carbonate, Furosemide, Calcitriol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does David Rosnack, M.D. accept Medicare? ▼
David Rosnack, M.D. appears in CMS Medicare data with 1,375 Part D claims and 246 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify David Rosnack, M.D.'s credentials? ▼
David Rosnack, M.D.'s NPI is 1215906771 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.