NPI registry status
Active
2026 NPPES data Hematology & Oncology Physician NPI 1235159906 MD
Verify on CMS → William Kim, MD
Hematology & Oncology Physician in Chapel Hill, North 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 11,530 in Hematology & Oncology 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
55
Medicare Part D claims · 12 beneficiaries · Hematology & Oncology Physician avg: 885
Generic prescribing
76%
generic claims · 24% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
William Kim, MD filed 55 Medicare Part D claims in 2024 as a Hematology & Oncology Physician in Chapel Hill, North Carolina, prescribing 76% generic.
- 55
- Part D claims, 2024
- 76%
- generic prescribing
- 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.
Federal trust snapshot
What official records show about William Kim, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1235159906), first enumerated 07/19/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 55 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- 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 1235159906 · Hematology & Oncology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-TRACE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1235159906
- ENUM-LEGACY 2006
- TAX-MID 12K Hematology &
- RX-TRACE 55
- BOOK-THIN 360 in North Carolina
- PHOTO-ENUM David Sokol, M.D. · 2006
William Kim, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
55 ≥ 0th percentile 0% of 1,416,883 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 · 2024
✓
Board certification likely (heuristic, not verified)
William Kim, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 William Kim, MD?
Quality data not reportedPrimary specialty
Hematology & Oncology Physician
Medicare Part D claims
55 94% vs specialty avg
Specialty distribution in North Carolina
How Hematology & Oncology Physician compares to other specialties among North 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 Hematology & Oncology 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 | 1235159906 |
|---|---|
| Specialty | Hematology & Oncology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/19/2006 |
Hospital and facility affiliations
Facilities where William Kim, 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.
University OF North Carolina AT Chapel Hill
Chapel Hill, NC
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
William Kim, MD - brand share 24.0%
Hematology & Oncology Physician average
24% brand-name claims vs 76% generic, on 55 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.
55
Total Claims
$152K
Total Drug Cost
12
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 96.8
- Total Day Supply
- 2,710
- Brand vs Generic
- 24% brand / 76% generic
- Brand Drug Cost
- $151K
- Generic Drug Cost
- $563
Patient Demographics
- Average Patient Age
- 72.8 years
- Avg HCC Risk Score
- 2.50
More Hematology & Oncology Physician in NC →
All providers in North Carolina →
Compare specialties →
Hematology & Oncology Physician Overview
How William Kim, MD fits within the Hematology & Oncology Physician landscape nationally.
11,530
Hematology & Oncology Physician Providers in US
54
States with Hematology & Oncology Physician
885
Avg Claims per Provider
William Kim, MD's 55 claims are below the specialty average of 885.
Nationwide Hematology & Oncology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Kim, both outside North Carolina so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Hematology & Oncology Physician Providers in North Carolina
Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as Kim.
One of 360 Hematology & Oncology Physician providers enrolled in North Carolina, 5 are shown here.
Dr. Jorge Abdallah
MD
Greenville, NC
Thomas Aberant
Durham, NC
Haritha Ackula
MBBS
Kinston, NC
Dr. Soheir Adam
MD
Durham, NC
Dr. Matthew Alberti
DO
Monroe, NC
Compare Hematology & Oncology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is William Kim, MD's specialty? ▼
William Kim, MD specializes in Hematology & Oncology Physician and practices in Chapel Hill, North Carolina. Credentials: MD.
How much does William Kim, MD prescribe under Medicare Part D? ▼
In 2024, William Kim, MD wrote 55 Medicare Part D claims totaling $152K in drug costs for 12 beneficiaries.
Where is William Kim, MD located? ▼
William Kim, MD is located at 101 MANNING DR, Chapel Hill, NC, 27599. Phone: (919) 966-4996.
What is William Kim, MD's NPI number? ▼
William Kim, MD's National Provider Identifier (NPI) is 1235159906, issued on 07/19/2006.
Does William Kim, MD prescribe more brand-name or generic drugs? ▼
William Kim, MD's prescribing is 24% brand-name and 76% generic drugs by claim count, with $151K in brand drug costs.
How many Hematology & Oncology Physician providers are there in the US? ▼
There are 11,530 Hematology & Oncology Physician providers across 54 states in the US. The average Hematology & Oncology Physician provider writes 885 Medicare Part D claims per year.
Does William Kim, MD accept Medicare? ▼
William Kim, MD appears in CMS Medicare data with 55 Part D claims and 12 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Kim, MD's credentials? ▼
William Kim, MD's NPI is 1235159906 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.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). 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 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.