2026 NPPES data Rheumatology Physician NPI 1124432398 M.D.
Verify on CMS →

Cathy Lee Ching, M.D.

Rheumatology Physician in West Columbia, 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 6,181 in Rheumatology 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
653
Medicare Part D claims · 141 beneficiaries · Rheumatology Physician avg: 2K
Generic prescribing
70%
generic claims · 30% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
69.8/100
▼ 13 pts below national avg 83.1 · Mid-tier
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Cathy Lee Ching, M.D. reported a CMS MIPS final score of 69.8/100 - below the 83.1 national average - and filed 653 Medicare Part D claims in 2023.

69.8/100
MIPS score · -13 vs avg
653
Part D claims, 2023
70%
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.

Cathy Lee Ching, 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

70 8th percentile higher than 8% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). This entry sits in this band. 70–80: 118,074 scored providers (25%). Above this entry. 80–90: 129,887 scored providers (27%). Above this entry. 90+: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

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 Cathy Lee Ching, M.D. sits

This provider among rheumatology physician peers

Across the 2,181 rheumatology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Cathy Lee Ching, M.D. writes more Part D claims than 16% of them and scores higher on MIPS quality than 8% - 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

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100024.949.974.899.8Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 25Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 22Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 32Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 23Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 90Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 33Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 90Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 30Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 57Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 75Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 45Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 20Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 90Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 60Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 48Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 38Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 42Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 28Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 33Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 27Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 83Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 62Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 2Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 80Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 43Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 55Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 37Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 72Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 73Cathy Lee Ching, M.D.-Part D claim volume, percentile in specialty: 16 · MIPS quality, percentile: 8
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one rheumatology physician peer from a representative sample of 60; the gold marker is Cathy Lee Ching, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

Board certification likely (heuristic, not verified)

Cathy Lee Ching, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 hospital affiliations - 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 Cathy Lee Ching, M.D.?

Below national average

NPI registry status

Active

Issued 06/16/2014

NPI 1124432398

Primary specialty

Rheumatology Physician

Mid-sized

6,181 US NPIs in this specialty

Medicare Part D claims

653 68% vs specialty avg

2023 prescription claims

Specialty avg: 2,054

MIPS final score

69.8/100 13.3 pts vs avg

Mid-tier band

vs 83.1 national avg

Specialty distribution in South Carolina

How Rheumatology Physician compares to other specialties among South Carolina providers

South Carolina providers

Largest specialties in South Carolina (% of in-state providers)

Pharmacist - 6.2%Pharmacist6.2%Mental Health Counselor - 5.1%Mental Health Counselor5.1%Family Nurse Practitioner - 4.6%Family Nurse Practitioner4.6%Physical Therapist - 4.5%Physical Therapist4.5%Behavior Technician - 3.8%Behavior Technician3.8%Speech-Language Pathologist - 3.7%Speech-Language Pathologist3.7%Rheumatology Physician - 0.1%Rheumatology Physician0.1%
Largest specialties in South Carolina (% of in-state providers)

Medicare quality performance, MIPS

Cathy Lee Ching, M.D.'s 2023 MIPS final score plotted against the Rheumatology Physician national average

Below national average
MIPS Final Score
69.8/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Rheumatology Physician) - 69.8/100 vs national avg 83.1

0%100%National avg83%69.8%
MIPS final score (Rheumatology Physician) - 69.8/100 vs national avg 83.1

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).

Cathy Lee Ching, M.D. appears in the CMS NPPES registry as a Rheumatology Physician provider holding M.D. credentials at 146 E HOSPITAL DR STE 550, West Columbia, SC, 29169, with a listed phone of (803) 936-7410. NPI 1124432398 was issued on 06/16/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Lee Ching most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 653 prescription claims written by this provider, covering 141 Medicare beneficiaries and totaling roughly $1.3 million in drug spend, split 30% brand-name and 70% generic by claim count. These figures capture only Medicare Part D, commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 69.8/100 for the 2023 performance year (Quality 56.1, Cost 48.3), compared with the national average of 83.1.

Rheumatology Physician is a mid-sized specialty nationwide, with 6,181 enrolled providers across 52 states and an average of 2,054 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

146 E HOSPITAL DR STE 550
West Columbia, SC 29169

Provider Details

NPI 1124432398
Specialty Rheumatology Physician
Credentials M.D.
Gender Female
NPI Issued 06/16/2014

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

69.8394
Final Score
Avg: 83.1
56.0824
Quality
48.3115
Cost
83
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where Cathy Lee Ching, 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.

Lexington Health Inc
West Columbia, SC
State OF Mississippi - University OF Mississippi Medical Center
Jackson, MS

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Above average

Cathy Lee Ching, M.D. - brand share 30.0%
Rheumatology Physician average

30% brand-name claims vs 70% generic, on 653 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.

653
Total Claims
$1.3M
Total Drug Cost
141
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,159
Total Day Supply
33,739
Brand vs Generic
30% brand / 70% generic
Brand Drug Cost
$1.3M
Generic Drug Cost
$25K

Patient Demographics

Average Patient Age
61.4 years
Avg HCC Risk Score
1.91
Gender Split
77% female / 23% male
Age Distribution
<65: 77, 65-74: 45, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What Cathy Lee Ching, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Hydroxychloroquine Sulfate
116
Prednisone
93
Methotrexate
Methotrexate Sodium
83
Mycophenolate Mofetil
35
Enbrel Sureclick
Etanercept
30
Azathioprine
23
Humira(Cf) Pen
Adalimumab
23
Leflunomide
21
Humira Pen
Adalimumab
20
Orencia Clickject
Abatacept
18

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Rheumatology Physician Overview

How Cathy Lee Ching, M.D. fits within the Rheumatology Physician landscape nationally.

6,181
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,054
Avg Claims per Provider

Cathy Lee Ching, M.D.'s 653 claims are below the specialty average of 2,054.

Nearby Rheumatology Physician Providers in South Carolina

Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as Lee Ching.

Compare Rheumatology 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 Rheumatology 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.

Frequently Asked Questions

What is Cathy Lee Ching, M.D.'s specialty?
Cathy Lee Ching, M.D. specializes in Rheumatology Physician and practices in West Columbia, South Carolina. Credentials: M.D..
How much does Cathy Lee Ching, M.D. prescribe under Medicare Part D?
In 2023, Cathy Lee Ching, M.D. wrote 653 Medicare Part D claims totaling $1.3M in drug costs for 141 beneficiaries.
What is Cathy Lee Ching, M.D.'s Medicare quality score?
Cathy Lee Ching, M.D. has a CMS MIPS Final Score of 69.8/100 (Quality: 56.1, Cost: 48.3). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Cathy Lee Ching, M.D. located?
Cathy Lee Ching, M.D. is located at 146 E HOSPITAL DR STE 550, West Columbia, SC, 29169. Phone: (803) 936-7410.
What is Cathy Lee Ching, M.D.'s NPI number?
Cathy Lee Ching, M.D.'s National Provider Identifier (NPI) is 1124432398, issued on 06/16/2014.
Does Cathy Lee Ching, M.D. prescribe more brand-name or generic drugs?
Cathy Lee Ching, M.D.'s prescribing is 30% brand-name and 70% generic drugs by claim count, with $1.3M in brand drug costs.
How many Rheumatology Physician providers are there in the US?
There are 6,181 Rheumatology Physician providers across 52 states in the US. The average Rheumatology Physician provider writes 2,054 Medicare Part D claims per year.
What drugs does Cathy Lee Ching, M.D. prescribe most often?
Based on 2023 Medicare Part D data, Cathy Lee Ching, M.D.'s most frequently prescribed drugs include Hydroxychloroquine Sulfate, Prednisone, Methotrexate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Cathy Lee Ching, M.D. accept Medicare?
Cathy Lee Ching, M.D. appears in CMS Medicare data with 653 Part D claims and 141 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Cathy Lee Ching, M.D.'s credentials?
Cathy Lee Ching, M.D.'s NPI is 1124432398 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

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.