NPI registry status
Active
2026 NPPES data Obstetrics & Gynecology Physician NPI 1518166065 M.D.
Verify on CMS → Jun Koike, M.D.
Obstetrics & Gynecology Physician in Mullins, 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 44,326 in Obstetrics & Gynecology 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
34
Medicare Part D claims · 12 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Industry payments
$36.9
2 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Jun Koike, M.D. filed 34 Medicare Part D claims in 2023 as an Obstetrics & Gynecology Physician in Mullins, South Carolina.
- 34
- Part D claims, 2023
- Likely
- board-certified (heuristic)
- ≥0th
- pct by Part D claim volume (lower-bound band)
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 1518166065 · Obstetrics & Gynecology Physician
NPI-10 · ENUM-MID · TAX-MID · RX-TRACE · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1518166065
- ENUM-MID 2007
- TAX-MID 44K Obstetrics &
- RX-TRACE 34
- BOOK-LIGHT 731 in South Carolina
- PHOTO-ENUM Gretchen Levey · 2007
Jun Koike, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
34 ≥ 0th percentile 0% of 1,370,886 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. 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 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Jun Koike, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Jun Koike, M.D.?
Quality data not reportedPrimary specialty
Obstetrics & Gynecology Physician
Medicare Part D claims
34 81% vs specialty avg
Specialty distribution in South Carolina
How Obstetrics & Gynecology Physician compares to other specialties among South Carolina providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Obstetrics & Gynecology Physician. Verify directly:
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 | 1518166065 |
|---|---|
| Specialty | Obstetrics & Gynecology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/15/2007 |
Hospital and facility affiliations
Facilities where Jun Koike, 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.
City Hospital Inc
Martinsburg, WV
Fort Healthcare Inc
Fort Atkinson, WI
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Jun Koike, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$37
Largest payer
Daiichi Sankyo Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
34
Total Claims
$2K
Total Drug Cost
12
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 66
- Total Day Supply
- 1,677
- Generic Drug Cost
- $1K
Patient Demographics
- Average Patient Age
- 62.6 years
- Avg HCC Risk Score
- 0.86
- Gender Split
- 100% female / 0% male
More Obstetrics & Gynecology Physician in SC →
All providers in South Carolina →
Compare specialties →
Obstetrics & Gynecology Physician Overview
How Jun Koike, M.D. fits within the Obstetrics & Gynecology Physician landscape nationally.
44,326
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider
Jun Koike, M.D.'s 34 claims are below the specialty average of 179.
Nationwide Obstetrics & Gynecology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Koike, both outside South Carolina so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Obstetrics & Gynecology Physician Providers in South Carolina
Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as Koike.
One of 731 Obstetrics & Gynecology Physician providers enrolled in South Carolina, 5 are shown here.
Dr. Sara Janne Aarsland
M.D.
Charleston, SC
Amanda Abraira
Spartanburg, SC
Dr. Christopher Accetta
MD
Summerville, SC
Dr. Riddick Ackerman
M.D.
Walterboro, SC
Dr. Lauren Adams
MD
Charleston, SC
Compare Obstetrics & Gynecology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Jun Koike, M.D.'s specialty? ▼
Jun Koike, M.D. specializes in Obstetrics & Gynecology Physician and practices in Mullins, South Carolina. Credentials: M.D..
How much does Jun Koike, M.D. prescribe under Medicare Part D? ▼
In 2023, Jun Koike, M.D. wrote 34 Medicare Part D claims totaling $2K in drug costs for 12 beneficiaries.
Where is Jun Koike, M.D. located? ▼
Jun Koike, M.D. is located at 2845 E HIGHWAY 76, Mullins, SC, 29574. Phone: (843) 431-2740.
What is Jun Koike, M.D.'s NPI number? ▼
Jun Koike, M.D.'s National Provider Identifier (NPI) is 1518166065, issued on 07/15/2007.
How many Obstetrics & Gynecology Physician providers are there in the US? ▼
There are 44,326 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 179 Medicare Part D claims per year.
Does Jun Koike, M.D. accept Medicare? ▼
Jun Koike, M.D. appears in CMS Medicare data with 34 Part D claims and 12 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Jun Koike, M.D.'s credentials? ▼
Jun Koike, M.D.'s NPI is 1518166065 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
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.
- 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.