2026 NPPES data Hospitalist Physician NPI 1821397407 MD
Verify on CMS →

WILLIAM CHO, MD

Hospitalist Physician in CORYDON, Indiana. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
418
Medicare Part D claims · 214 beneficiaries · Hospitalist Physician avg: 888
MIPS score
79.5254/100
▼ 4 pts below national avg 83.1 · [object Object]

What the federal data shows

WILLIAM CHO, MD reported a CMS MIPS final score of 79.5254/100 — below the 83.1 national average — and filed 418 Medicare Part D claims in 2023.

79.5254/100
MIPS score · -4 vs avg
418
Part D claims, 2023
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.

WILLIAM CHO, MD's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

80 30th percentile higher than 30% 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%). Below this entry. 70–80: 118,074 scored providers (25%). This entry sits in this band. 80–90: 129,887 scored providers (27%). Above this entry. 90–100: 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

Board certification likely (heuristic — not verified)

WILLIAM CHO, MD 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 WILLIAM CHO, MD?

Near national average

NPI registry status

Active

Issued 03/21/2011

NPI 1821397407

Primary specialty

Hospitalist Physician

Mid-sized

16,825 US NPIs in this specialty

Medicare Part D claims

418 53% vs specialty avg

2023 prescription claims

Specialty avg: 888

MIPS final score

79.5254/100 3.5745999999999896% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Indiana

How Hospitalist Physician compares to other specialties among Indiana providers

Indiana providers

Hospitalist Physician share within Indiana

1. Hospitalist Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Hospitalist Physician share within Indiana

Medicare quality performance — MIPS

WILLIAM CHO, MD's 2023 MIPS final score plotted against the Hospitalist Physician national average

Near national average
MIPS Final Score
79.5254/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Hospitalist Physician) — 79.5254/100 vs national avg 83.1

0%100%National avg83%79.5%
MIPS final score (Hospitalist Physician) — 79.5254/100 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).

WILLIAM CHO, MD appears in the CMS NPPES registry as a Hospitalist Physician provider holding MD credentials at 1141 HOSPITAL DR NW, CORYDON, IN, 47112, with a listed phone of (812) 738-4251. NPI 1821397407 was issued on 03/21/2011. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHO 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 418 prescription claims written by this provider, covering 214 Medicare beneficiaries and totaling roughly $27K in drug spend, with an opioid prescribing rate of 3.6%. 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 79.5254/100 for the 2023 performance year (Quality 78.1611, Cost 50.9082), compared with the national average of 83.1.

Hospitalist Physician is a mid-sized specialty nationwide, with 16,825 enrolled providers across 54 states and an average of 888 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

1141 HOSPITAL DR NW
CORYDON, IN 47112

Provider Details

NPI 1821397407
Specialty Hospitalist Physician
Credentials MD
Gender Male
NPI Issued 03/21/2011

CMS Quality Score (MIPS)

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

79.5254
Final Score
Avg: 83.1
78.1611
Quality
50.9082
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where WILLIAM CHO, MD 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.

AMERICAN HEALTHCARE SYSTEMS LLC
ASHEBORO, NC
VITAL HEALTH PARTNERS LLC
WAUKEGAN, IL

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

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

418
Total Claims
$27K
Total Drug Cost
214
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
465
Total Day Supply
10,100
Generic Drug Cost
$5K
Opioid Claims
15 (3.6% rate)
Antibiotic Claims
76

Patient Demographics

Average Patient Age
73.2 years
Avg HCC Risk Score
2.30
Gender Split
50% female / 50% male
Age Distribution
<65: 33, 65-74: 74, 75-84: 77, 85+: 30

Top Prescribed Drugs (Medicare Part D)

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

What WILLIAM CHO, MD 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
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
17
Eliquis
Apixaban
17
Prednisone
15
Atorvastatin Calcium
14
Carvedilol
14
Omeprazole
14
Amlodipine Besylate
13
Furosemide
12
Ciprofloxacin Hcl
11
Metoprolol Tartrate
11

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

Hospitalist Physician Overview

How WILLIAM CHO, MD fits within the Hospitalist Physician landscape nationally.

16,825
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
888
Avg Claims per Provider

WILLIAM CHO, MD's 418 claims are below the specialty average of 888.

Nearby Hospitalist Physician Providers in Indiana

Other clinicians with the same primary specialty enrolled in Indiana, drawn from the same CMS NPPES roster as CHO.

Compare Hospitalist Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is WILLIAM CHO, MD's specialty?
WILLIAM CHO, MD specializes in Hospitalist Physician and practices in CORYDON, Indiana. Credentials: MD.
How much does WILLIAM CHO, MD prescribe under Medicare Part D?
In 2023, WILLIAM CHO, MD wrote 418 Medicare Part D claims totaling $27K in drug costs for 214 beneficiaries.
What is WILLIAM CHO, MD's Medicare quality score?
WILLIAM CHO, MD has a CMS MIPS Final Score of 79.5254/100 (Quality: 78.1611, Cost: 50.9082). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is WILLIAM CHO, MD located?
WILLIAM CHO, MD is located at 1141 HOSPITAL DR NW, CORYDON, IN, 47112. Phone: (812) 738-4251.
What is WILLIAM CHO, MD's NPI number?
WILLIAM CHO, MD's National Provider Identifier (NPI) is 1821397407, issued on 03/21/2011.
Does WILLIAM CHO, MD prescribe opioids?
Yes, WILLIAM CHO, MD had 15 opioid claims in 2023 with an opioid prescribing rate of 3.6%.
How many Hospitalist Physician providers are there in the US?
There are 16,825 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 888 Medicare Part D claims per year.
What drugs does WILLIAM CHO, MD prescribe most often?
Based on 2023 Medicare Part D data, WILLIAM CHO, MD's most frequently prescribed drugs include Amoxicillin-Clavulanate Potass, Eliquis, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does WILLIAM CHO, MD accept Medicare?
WILLIAM CHO, MD appears in CMS Medicare data with 418 Part D claims and 214 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify WILLIAM CHO, MD's credentials?
WILLIAM CHO, MD's NPI is 1821397407 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

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