NPI registry status
Active
2026 NPPES data Cytopathology Physician NPI 1114938578 MD
Verify on CMS → Changhyun Choi, MD
Cytopathology Physician in Memphis, Tennessee.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,381 in Cytopathology 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.
MIPS score
75/100
CMS neutral threshold · no category scores published
What the federal data shows
Changhyun Choi, MD carries the neutral CMS MIPS final score of 75/100, assigned where no category was scored.
- 75/100
- CMS neutral score · not measured
- Likely
- board-certified (heuristic)
- #212
- Cytopathology Physician rank among Tennessee specialties
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.
CMS NPPES provider registry desk
NPI 1114938578 · Cytopathology Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · MIPS-NEUTRAL · BOOK-THIN · PHOTO-ENUM
- NPI-10 1114938578
- ENUM-LEGACY 2006
- TAX-NARROW 1,381
- MIPS-NEUTRAL 75/100
- BOOK-THIN 29 in Tennessee
- PHOTO-ENUM Douglas Johnson · 2006
✓
Board certification likely (heuristic, not verified)
Changhyun Choi, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Changhyun Choi, MD?
CMS neutral score, not measuredPrimary specialty
Cytopathology Physician
MIPS final score
75/100
Specialty distribution in Tennessee
How Cytopathology Physician compares to other specialties among Tennessee providers
MIPS score not measured
CMS assigned a neutral 75/100 threshold
CMS did not publish any Quality, Cost, Promoting Interoperability, or Improvement Activities category score for this clinician. This administrative threshold is not comparable with the national average of clinicians whose MIPS score was measured.
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 | 1114938578 |
|---|---|
| Specialty | Cytopathology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 08/11/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
75
Final Score
CMS neutral threshold · not measured
Reporting: Individual
Cytopathology Physician Overview
How Changhyun Choi, MD fits within the Cytopathology Physician landscape nationally.
1,381
Cytopathology Physician Providers in US
50
States with Cytopathology Physician
92
Avg Claims per Provider
Nationwide Cytopathology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Choi, both outside Tennessee so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (75 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Cytopathology Physician Providers in Tennessee
Other clinicians with the same primary specialty enrolled in Tennessee, drawn from the same CMS NPPES roster as Choi.
One of 29 Cytopathology Physician providers enrolled in Tennessee, 5 are shown here.
Dr. Frank Beuerlein
MD
Morristown, TN
Dr. Raymond Bluth
MD
Nashville, TN
Dr. Sandra Brooks
MD
Johnson City, TN
Dr. Diana Castro Villabon
M.D.
Memphis, TN
Dr. Lauren Dehan
M.D.
Columbia, TN
Compare Cytopathology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Changhyun Choi, MD's specialty? ▼
Changhyun Choi, MD specializes in Cytopathology Physician and practices in Memphis, Tennessee. Credentials: MD.
What is Changhyun Choi, MD's Medicare quality score? ▼
Changhyun Choi, MD has a CMS MIPS Final Score of 75/100. CMS published no Quality, Promoting Interoperability, Improvement Activity or Cost score for this clinician, so the final score is the neutral performance threshold CMS assigns rather than a measured result. The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Changhyun Choi, MD located? ▼
Changhyun Choi, MD is located at 3495 HACKS CROSS RD, Memphis, TN, 38125. Phone: (901) 526-7444.
What is Changhyun Choi, MD's NPI number? ▼
Changhyun Choi, MD's National Provider Identifier (NPI) is 1114938578, issued on 08/11/2006.
How many Cytopathology Physician providers are there in the US? ▼
There are 1,381 Cytopathology Physician providers across 50 states in the US. The average Cytopathology Physician provider writes 92 Medicare Part D claims per year.
Does Changhyun Choi, MD accept Medicare? ▼
Changhyun Choi, MD appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Changhyun Choi, MD's credentials? ▼
Changhyun Choi, MD's NPI is 1114938578 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.
- 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
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.