NPI registry status
Active
2026 NPPES data Specialist NPI 1194720409 MD
Verify on CMS → Catherine Ferguson, MD
Specialist in Greenville, 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 69,608 in Specialist, 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
16
Medicare Part D claims · 11 beneficiaries · Specialist avg: 1K
MIPS score
77.8/100
▼ 5 pts below national avg 83.1 · Above neutral
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Catherine Ferguson, MD reported a CMS MIPS final score of 77.8/100 - below the 83.1 national average - and filed 16 Medicare Part D claims in 2023.
- 77.8/100
- MIPS score · -5 vs avg
- 16
- Part D claims, 2023
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.
Catherine Ferguson, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
78 24th percentile higher than 24% 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 Catherine Ferguson, MD sits
This provider among specialist peers
Across the 4,869 specialist providers who report both Medicare Part D prescribing and a MIPS quality score, Catherine Ferguson, MD writes more Part D claims than 2% of them and scores higher on MIPS quality than 44% - placing this provider in the lower-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 specialist peer from a representative sample of 60; the gold marker is Catherine Ferguson, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Catherine Ferguson, MD?
Below national averagePrimary specialty
Specialist
Medicare Part D claims
16 99% vs specialty avg
MIPS final score
77.8/100 5.3 pts vs avg
Specialty distribution in South Carolina
How Specialist compares to other specialties among South Carolina providers
Medicare quality performance, MIPS
Catherine Ferguson, MD's 2023 MIPS final score plotted against the Specialist national average
- MIPS Final Score
- 77.8/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Specialist) - 77.8/100 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).
Catherine Ferguson, MD appears in the CMS NPPES registry as a Specialist provider holding MD credentials at 900 W FARIS RD, Greenville, SC, 29605, with a listed phone of (864) 679-3900. NPI 1194720409 was issued on 06/15/2005.
Medicare Part D records for calendar year 2023 show 16 prescription claims written by this provider, covering 11 Medicare beneficiaries and totaling roughly $302 in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 77.8/100 for the 2023 performance year (Quality 72, Cost 60.7), compared with the national average of 83.1.
Specialist is a high-volume specialty nationwide, with 69,608 enrolled providers across 55 states and an average of 1,474 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 | 1194720409 |
|---|---|
| Specialty | Specialist |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 06/15/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
77.8233
Final Score
Avg: 83.1
72.0413
Quality
60.703
Cost
92
Promoting Interoperability
Reporting: Group practice
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
16
Total Claims
$302
Total Drug Cost
11
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 16
- Total Day Supply
- 267
- Generic Drug Cost
- $122
Patient Demographics
- Average Patient Age
- 71.9 years
- Avg HCC Risk Score
- 1.82
- Age Distribution
- <65: 0, 65-74: N/A, 75-84: N/A, 85+: 0
Specialist Overview
How Catherine Ferguson, MD fits within the Specialist landscape nationally.
69,608
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider
Catherine Ferguson, MD's 16 claims are below the specialty average of 1,474.
Nearby Specialist Providers in South Carolina
Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as Ferguson.
Dr. Michael Abraham
ATC, PES
Fort Mill, SC
Dr. Joneen Adams
MS
Georgetown, SC
Dr. Michael Alday
MD
Spartanburg, SC
John Alexander
Columbia, SC
Dr. William Allen
MD
Columbia, SC
Compare Specialist 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 Specialist 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore South Carolina
Frequently Asked Questions
What is Catherine Ferguson, MD's specialty? ▼
Catherine Ferguson, MD specializes in Specialist and practices in Greenville, South Carolina. Credentials: MD.
How much does Catherine Ferguson, MD prescribe under Medicare Part D? ▼
In 2023, Catherine Ferguson, MD wrote 16 Medicare Part D claims totaling $302 in drug costs for 11 beneficiaries.
What is Catherine Ferguson, MD's Medicare quality score? ▼
Catherine Ferguson, MD has a CMS MIPS Final Score of 77.8/100 (Quality: 72, Cost: 60.7). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Catherine Ferguson, MD located? ▼
Catherine Ferguson, MD is located at 900 W FARIS RD, Greenville, SC, 29605. Phone: (864) 679-3900.
What is Catherine Ferguson, MD's NPI number? ▼
Catherine Ferguson, MD's National Provider Identifier (NPI) is 1194720409, issued on 06/15/2005.
How many Specialist providers are there in the US? ▼
There are 69,608 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
Does Catherine Ferguson, MD accept Medicare? ▼
Catherine Ferguson, MD appears in CMS Medicare data with 16 Part D claims and 11 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Catherine Ferguson, MD's credentials? ▼
Catherine Ferguson, MD's NPI is 1194720409 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.
- 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.