NPI registry status
Active
2026 NPPES data Transplant Surgery Physician NPI 1407144686 MD, PHD
Verify on CMS → Joohyun Kim, MD, PHD
Transplant Surgery Physician in New Haven, Connecticut.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,051 in Transplant Surgery 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
119
Medicare Part D claims · 27 beneficiaries · Transplant Surgery Physician avg: 283
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
80.5/100
▼ 3 pts below national avg 83.5 · Above neutral
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Joohyun Kim, MD, PHD reported a CMS MIPS final score of 80.5/100 - below the 83.5 national average - and filed 119 Medicare Part D claims in 2024.
- 80.5/100
- MIPS score · -3 vs avg
- 119
- Part D claims, 2024
- 90%
- 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.
Federal trust snapshot
What official records show about Joohyun Kim, MD, PHD
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1407144686), first enumerated 07/21/2011.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 119 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 80.5/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- 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 1407144686 · Transplant Surgery Physician
NPI-10 · ENUM-MID · TAX-NARROW · MIPS-INLINE · RX-LIGHT · BOOK-THIN · PHOTO-FINISH
- NPI-10 1407144686
- ENUM-MID 2011
- TAX-NARROW 1,051
- MIPS-INLINE 80.5/100
- RX-LIGHT 119
- BOOK-THIN 12 in Connecticut
- PHOTO-FINISH Calvin Eriksen · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Kim · this provi…
Kim · this provider
80.5 MIPS pts
- Motaz Selim · hi…
Motaz Selim
80.5 MIPS pts
- Calvin Eriksen ·…
Calvin Eriksen
80.5 MIPS pts
- Terra Pearson · …
Terra Pearson
80.5 MIPS pts
- Badi Rawashdeh ·…
Badi Rawashdeh
80.5 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Joohyun Kim, MD, PHD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
81 ≥ 30th percentile 30% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Joohyun Kim, MD, PHD sits
This provider among transplant surgery physician peers
Across the 235 transplant surgery physician providers who report both Medicare Part D prescribing and a MIPS quality score, Joohyun Kim, MD, PHD writes more Part D claims than 52% of them and scores higher on MIPS quality than 33% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one transplant surgery physician peer from a representative sample of 60; the gold marker is Joohyun Kim, MD, PHD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Joohyun Kim, MD, PHD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - 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 Joohyun Kim, MD, PHD?
Near national averagePrimary specialty
Transplant Surgery Physician
Medicare Part D claims
119 58% vs specialty avg
MIPS final score
80.5/100 3 pts vs avg
Specialty distribution in Connecticut
How Transplant Surgery Physician compares to other specialties among Connecticut providers
Medicare quality performance, MIPS
Joohyun Kim, MD, PHD's 2023 MIPS final score plotted against the Transplant Surgery Physician national average
- MIPS Final Score
- 80.5/100
- vs 83.5 national avg · 2023 performance year
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 | 1407144686 |
|---|---|
| Specialty | Transplant Surgery Physician |
| Credentials | MD, PHD |
| Gender | Male |
| NPI Issued | 07/21/2011 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
80.4671
Final Score
Measured-score avg: 83.5
66.2426
Quality
68.6477
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Joohyun Kim, MD, PHD 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.
Yale University
New Haven, CT
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 · Typical
Joohyun Kim, MD, PHD - brand share 10.0%
Transplant Surgery Physician average
10% brand-name claims vs 90% generic, on 119 2024 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 2024.
119
Total Claims
$8K
Total Drug Cost
27
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 157.6
- Total Day Supply
- 4,383
- Brand vs Generic
- 10% brand / 90% generic
- Brand Drug Cost
- $1K
- Generic Drug Cost
- $6K
- Antibiotic Claims
- 40
Patient Demographics
- Average Patient Age
- 58.9 years
- Avg HCC Risk Score
- 7.34
- Gender Split
- 44% female / 56% male
- Age Distribution
- <65: 15, 65-74: 12, 75-84: 0, 85+: 0
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 40 |
| Valganciclovir Hcl | 17 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Transplant Surgery Physician Overview
How Joohyun Kim, MD, PHD fits within the Transplant Surgery Physician landscape nationally.
1,051
Transplant Surgery Physician Providers in US
48
States with Transplant Surgery Physician
283
Avg Claims per Provider
Joohyun Kim, MD, PHD's 119 claims are below the specialty average of 283.
Nationwide Transplant Surgery Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Kim, both outside Connecticut so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (80.5 here).
Same NPPES enumeration year (2011)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Transplant Surgery Physician Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Kim.
One of 12 Transplant Surgery Physician providers enrolled in Connecticut, 5 are shown here.
Dr. Gregory Azia
M.D.
New London, CT
Dr. Matthew Brown
M.D.
Hartford, CT
Dr. Wasim Dar
M.D.
Hartford, CT
Dr. Sanjay Kulkarni
MD
New Haven, CT
Dr. Anne Lally
M.D.
Hartford, CT
Compare Transplant Surgery Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Joohyun Kim, MD, PHD's specialty? ▼
Joohyun Kim, MD, PHD specializes in Transplant Surgery Physician and practices in New Haven, Connecticut. Credentials: MD, PHD.
How much does Joohyun Kim, MD, PHD prescribe under Medicare Part D? ▼
In 2024, Joohyun Kim, MD, PHD wrote 119 Medicare Part D claims totaling $8K in drug costs for 27 beneficiaries.
What is Joohyun Kim, MD, PHD's Medicare quality score? ▼
Joohyun Kim, MD, PHD has a CMS MIPS Final Score of 80.5/100 (Quality: 66.2, Cost: 68.6). 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 Joohyun Kim, MD, PHD located? ▼
Joohyun Kim, MD, PHD is located at 800 HOWARD AVE, New Haven, CT, 06519. Phone: (203) 785-6214.
What is Joohyun Kim, MD, PHD's NPI number? ▼
Joohyun Kim, MD, PHD's National Provider Identifier (NPI) is 1407144686, issued on 07/21/2011.
Does Joohyun Kim, MD, PHD prescribe more brand-name or generic drugs? ▼
Joohyun Kim, MD, PHD's prescribing is 10% brand-name and 90% generic drugs by claim count, with $1K in brand drug costs.
How many Transplant Surgery Physician providers are there in the US? ▼
There are 1,051 Transplant Surgery Physician providers across 48 states in the US. The average Transplant Surgery Physician provider writes 283 Medicare Part D claims per year.
What drugs does Joohyun Kim, MD, PHD prescribe most often? ▼
Based on 2024 Medicare Part D data, Joohyun Kim, MD, PHD's most frequently prescribed drugs include Sulfamethoxazole-Trimethoprim, Valganciclovir Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Joohyun Kim, MD, PHD accept Medicare? ▼
Joohyun Kim, MD, PHD appears in CMS Medicare data with 119 Part D claims and 27 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Joohyun Kim, MD, PHD's credentials? ▼
Joohyun Kim, MD, PHD's NPI is 1407144686 with credentials MD, PHD. 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.