NPI registry status
Active
2026 NPPES data Student in an Organized Health Care Education/Training Program NPI 1558526947 M.D.
Verify on CMS → Katherine Ruzhansky, M.D.
Student in an Organized Health Care Education/Training Program in Charleston, 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 331,274 in Student in an Organized Health Care Education/Training Program, 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
530
Medicare Part D claims · 84 beneficiaries · Student in an Organized Health Care Education/Training Program avg: 459
Generic prescribing
60%
generic claims · 40% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$6.3K
14 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Katherine Ruzhansky, M.D. filed 530 Medicare Part D claims in 2023 as a Student in an Organized Health Care Education/Training Program in Charleston, South Carolina, prescribing 60% generic.
- 530
- Part D claims, 2023
- 60%
- generic prescribing
- $6.3K
- industry payments (Sunshine Act)
- ≥66th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Katherine Ruzhansky, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1558526947), first enumerated 07/24/2008.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 530 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$6.3K in reported industry payments (14 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1558526947 · Student in an Organized Health Care Education/Training Program
NPI-10 · ENUM-MID · TAX-MEGA · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1558526947
- ENUM-MID 2008
- TAX-MEGA 331K Student in
- RX-LIGHT 530
- BOOK-LIGHT 2,462 in South Carolina
- PHOTO-ENUM Dhaval Kapadia · 2008
Katherine Ruzhansky, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
530 ≥ 66th percentile 66% of 1,370,886 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Katherine Ruzhansky, M.D.?
Quality data not reportedPrimary specialty
Student in an Organized Health Care Education/Training Program
Medicare Part D claims
530 15% vs specialty avg
Specialty distribution in South Carolina
How Student in an Organized Health Care Education/Training Program compares to other specialties among South Carolina 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 Student in an Organized Health Care Education/Training Program. 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).
Practice Address
Provider Details
| NPI | 1558526947 |
|---|---|
| Specialty | Student in an Organized Health Care Education/Training Program |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 07/24/2008 |
Hospital and facility affiliations
Facilities where Katherine Ruzhansky, 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.
University Medical Associates OF The Medical University OF South Carol
Mount Pleasant, 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 Katherine Ruzhansky, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$6.3K
Largest payer
Johnson & Johnson Health Care Systems 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 · Above average
Katherine Ruzhansky, M.D. - brand share 40.0%
Student in an Organized Health Care Education/Training Program average
40% brand-name claims vs 60% generic, on 530 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.
530
Total Claims
$2.3M
Total Drug Cost
84
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 729
- Total Day Supply
- 21,223
- Brand vs Generic
- 40% brand / 60% generic
- Brand Drug Cost
- $2.3M
- Generic Drug Cost
- $26K
Patient Demographics
- Average Patient Age
- 70.7 years
- Avg HCC Risk Score
- 1.97
- Gender Split
- 48% female / 52% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Katherine Ruzhansky, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Radicava Ors
Radicava Ors
72 claims
- Riluzole
Riluzole
72 claims
- Mycophenolate Mofe…
Mycophenolate Mofetil
61 claims
- Pyridostigmine Bro…
Pyridostigmine Bromide
58 claims
- Prednisone
Prednisone
42 claims
- Octagam
Octagam
40 claims
- Azathioprine 22
Azathioprine
22 claims
- Sodium Chloride 22
Sodium Chloride
22 claims
| Drug | Claims |
|---|---|
| Radicava Ors Edaravone | 72 |
| Riluzole | 72 |
| Mycophenolate Mofetil | 61 |
| Pyridostigmine Bromide | 58 |
| Prednisone | 42 |
| Octagam Immun Globg(Igg)/Malt/Iga Ov50 | 40 |
| Azathioprine | 22 |
| Sodium Chloride Sodium Chloride 0.45 % | 22 |
| Emflaza Deflazacort | 17 |
| Gabapentin | 17 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Student in an Organized Health Care Education/Training Program in SC →
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Student in an Organized Health Care Education/Training Program Overview
How Katherine Ruzhansky, M.D. fits within the Student in an Organized Health Care Education/Training Program landscape nationally.
331,274
Student in an Organized Health Care Education/Training Program Providers in US
55
States with Student in an Organized Health Care Education/Training Program
459
Avg Claims per Provider
Katherine Ruzhansky, M.D.'s 530 claims are above the specialty average of 459.
Nationwide Student in an Organized Health Care Education/Training Program peers with similar MIPS or enrollment year
Two federal-record peer sets for Ruzhansky, both outside South Carolina so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2008)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Student in an Organized Health Care Education/Training Program Providers in South Carolina
Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as Ruzhansky.
One of 2,462 Student in an Organized Health Care Education/Training Program providers enrolled in South Carolina, 5 are shown here.
Frequently Asked Questions
What is Katherine Ruzhansky, M.D.'s specialty? ▼
Katherine Ruzhansky, M.D. specializes in Student in an Organized Health Care Education/Training Program and practices in Charleston, South Carolina. Credentials: M.D..
How much does Katherine Ruzhansky, M.D. prescribe under Medicare Part D? ▼
In 2023, Katherine Ruzhansky, M.D. wrote 530 Medicare Part D claims totaling $2.3M in drug costs for 84 beneficiaries.
Where is Katherine Ruzhansky, M.D. located? ▼
Katherine Ruzhansky, M.D. is located at 171 ASHLEY AVE, Charleston, SC, 29425. Phone: (843) 792-1414.
What is Katherine Ruzhansky, M.D.'s NPI number? ▼
Katherine Ruzhansky, M.D.'s National Provider Identifier (NPI) is 1558526947, issued on 07/24/2008.
Does Katherine Ruzhansky, M.D. prescribe more brand-name or generic drugs? ▼
Katherine Ruzhansky, M.D.'s prescribing is 40% brand-name and 60% generic drugs by claim count, with $2.3M in brand drug costs.
How many Student in an Organized Health Care Education/Training Program providers are there in the US? ▼
There are 331,274 Student in an Organized Health Care Education/Training Program providers across 55 states in the US. The average Student in an Organized Health Care Education/Training Program provider writes 459 Medicare Part D claims per year.
What drugs does Katherine Ruzhansky, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Katherine Ruzhansky, M.D.'s most frequently prescribed drugs include Radicava Ors, Riluzole, Mycophenolate Mofetil. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Katherine Ruzhansky, M.D. accept Medicare? ▼
Katherine Ruzhansky, M.D. appears in CMS Medicare data with 530 Part D claims and 84 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Katherine Ruzhansky, M.D.'s credentials? ▼
Katherine Ruzhansky, M.D.'s NPI is 1558526947 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
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.