NPI registry status
Active
2026 NPPES data Radiation Oncology Physician NPI 1376516823 MD
Verify on CMS → May Lim, MD
Radiation Oncology Physician in Raleigh, 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 6,141 in Radiation 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
17
Medicare Part D claims · 11 beneficiaries · Radiation Oncology Physician avg: 135
What the federal data shows
May Lim, MD filed 17 Medicare Part D claims in 2024 as a Radiation Oncology Physician in Raleigh, North Carolina.
- 17
- Part D claims, 2024
- 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 May Lim, 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 1376516823), first enumerated 02/07/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 17 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
3 CMS Care Compare hospital affiliations 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 1376516823 · Radiation Oncology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-TRACE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1376516823
- ENUM-LEGACY 2006
- TAX-MID 6K Radiation Oncology
- RX-TRACE 17
- BOOK-THIN 201 in North Carolina
- PHOTO-ENUM Mark Fireman, M.D. · 2006
May Lim, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
17 ≥ 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)
May Lim, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 3 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 May Lim, MD?
Quality data not reportedPrimary specialty
Radiation Oncology Physician
Medicare Part D claims
17 87% vs specialty avg
Specialty distribution in North Carolina
How Radiation 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 Radiation 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 | 1376516823 |
|---|---|
| Specialty | Radiation Oncology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 02/07/2006 |
Hospital and facility affiliations
Facilities where May Lim, 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.
According to CMS billing records, May Lim, MD is affiliated with 3 Medicare-billing facilities.
Johnston Radiation Oncology LLC
Clayton, NC
Smithfield Radiation Oncology LLC
Smithfield, NC
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).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
17
Total Claims
$201
Total Drug Cost
11
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 21
- Total Day Supply
- 354
Patient Demographics
- Average Patient Age
- 76.5 years
- Avg HCC Risk Score
- 1.89
- Age Distribution
- <65: 0, 65-74: N/A, 75-84: N/A, 85+: N/A
Radiation Oncology Physician Overview
How May Lim, MD fits within the Radiation Oncology Physician landscape nationally.
6,141
Radiation Oncology Physician Providers in US
53
States with Radiation Oncology Physician
135
Avg Claims per Provider
May Lim, MD's 17 claims are below the specialty average of 135.
Nationwide Radiation Oncology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Lim, 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 Radiation 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 Lim.
One of 201 Radiation Oncology Physician providers enrolled in North Carolina, 5 are shown here.
Dr. Mustafa Abugideiri
MD
Wilmington, NC
Dr. Jeffrey Acker
M.D.
Pinehurst, NC
Dr. Quentin Adams
M.D.
Winston Salem, NC
Dr. Mark Alden
MD
Greenville, NC
Karen Allen
NP
Durham, NC
Compare Radiation Oncology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is May Lim, MD's specialty? ▼
May Lim, MD specializes in Radiation Oncology Physician and practices in Raleigh, North Carolina. Credentials: MD.
How much does May Lim, MD prescribe under Medicare Part D? ▼
In 2024, May Lim, MD wrote 17 Medicare Part D claims totaling $201 in drug costs for 11 beneficiaries.
Where is May Lim, MD located? ▼
May Lim, MD is located at 4420 LAKE BOONE TRL STE 102, Raleigh, NC, 27607. Phone: (919) 784-3018.
What is May Lim, MD's NPI number? ▼
May Lim, MD's National Provider Identifier (NPI) is 1376516823, issued on 02/07/2006.
How many Radiation Oncology Physician providers are there in the US? ▼
There are 6,141 Radiation Oncology Physician providers across 53 states in the US. The average Radiation Oncology Physician provider writes 135 Medicare Part D claims per year.
Does May Lim, MD accept Medicare? ▼
May Lim, MD appears in CMS Medicare data with 17 Part D claims and 11 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify May Lim, MD's credentials? ▼
May Lim, MD's NPI is 1376516823 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.