2026 NPPES data Undersea and Hyperbaric Medicine (Preventive Medicine) Physician NPI 1154343200 M.D.
Verify on CMS →

CHARLOTTE LIM, M.D.

Undersea and Hyperbaric Medicine (Preventive Medicine) Physician in GRAFTON, Wisconsin. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
57
Medicare Part D claims · 36 beneficiaries · Undersea and Hyperbaric Medicine (Preventive Medicine) Physician avg: 522

What the federal data shows

CHARLOTTE LIM, M.D. filed 57 Medicare Part D claims in 2023 as a Undersea and Hyperbaric Medicine (Preventive Medicine) Physician in GRAFTON, Wisconsin.

57
Part D claims, 2023
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.

CHARLOTTE LIM, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

57 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic — not verified)

CHARLOTTE LIM, 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 CHARLOTTE LIM, M.D.?

Quality data not reported

NPI registry status

Active

Issued 07/24/2006

NPI 1154343200

Primary specialty

Undersea and Hyperbaric Medicine (Preventive Medicine) Physician

Rare

237 US NPIs in this specialty

Medicare Part D claims

57 89% vs specialty avg

2023 prescription claims

Specialty avg: 522

Specialty distribution in Wisconsin

How Undersea and Hyperbaric Medicine (Preventive Medicine) Physician compares to other specialties among Wisconsin providers

Wisconsin providers

Undersea and Hyperbaric Medicine (Preventive Medicine) Physician share within Wisconsin

1. Undersea and Hyperbaric Medicine (Preventive Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Undersea and Hyperbaric Medicine (Preventive Medicine) Physician share within Wisconsin

Specialty board-certification context

Estimated specialty board-certified rate — Undersea and Hyperbaric Medicine (Preventive Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Undersea and Hyperbaric Medicine (Preventive Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Undersea and Hyperbaric Medicine (Preventive Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Undersea and Hyperbaric Medicine (Preventive Medicine) Physician) — ABMS / AOA estimate

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).

CHARLOTTE LIM, M.D. appears in the CMS NPPES registry as a Undersea and Hyperbaric Medicine (Preventive Medicine) Physician provider holding M.D. credentials at 975 PORT WASHINGTON RD, GRAFTON, WI, 53024, with a listed phone of (262) 329-1400. NPI 1154343200 was issued on 07/24/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LIM most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 57 prescription claims written by this provider, covering 36 Medicare beneficiaries and totaling roughly $862 in drug spend. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Undersea and Hyperbaric Medicine (Preventive Medicine) Physician is a narrow specialty nationwide, with 237 enrolled providers across 41 states and an average of 522 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

975 PORT WASHINGTON RD
GRAFTON, WI 53024

Provider Details

NPI 1154343200
Specialty Undersea and Hyperbaric Medicine (Preventive Medicine) Physician
Credentials M.D.
Gender Female
NPI Issued 07/24/2006

Hospital and facility affiliations

Facilities where CHARLOTTE LIM, 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.

AURORA ADVANCED HEALTHCARE, INC.
HARTFORD, WI
AURORA MEDICAL GROUP, INC.
GRAFTON, 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).

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

57
Total Claims
$862
Total Drug Cost
36
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
57
Total Day Supply
784
Generic Drug Cost
$777
Antibiotic Claims
33

Patient Demographics

Average Patient Age
74.6 years
Avg HCC Risk Score
2.24

Undersea and Hyperbaric Medicine (Preventive Medicine) Physician Overview

How CHARLOTTE LIM, M.D. fits within the Undersea and Hyperbaric Medicine (Preventive Medicine) Physician landscape nationally.

237
Undersea and Hyperbaric Medicine (Preventive Medicine) Physician Providers in US
41
States with Undersea and Hyperbaric Medicine (Preventive Medicine) Physician
522
Avg Claims per Provider

CHARLOTTE LIM, M.D.'s 57 claims are below the specialty average of 522.

Nearby Undersea and Hyperbaric Medicine (Preventive Medicine) Physician Providers in Wisconsin

Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as LIM.

Compare Undersea and Hyperbaric Medicine (Preventive Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is CHARLOTTE LIM, M.D.'s specialty?
CHARLOTTE LIM, M.D. specializes in Undersea and Hyperbaric Medicine (Preventive Medicine) Physician and practices in GRAFTON, Wisconsin. Credentials: M.D..
How much does CHARLOTTE LIM, M.D. prescribe under Medicare Part D?
In 2023, CHARLOTTE LIM, M.D. wrote 57 Medicare Part D claims totaling $862 in drug costs for 36 beneficiaries.
Where is CHARLOTTE LIM, M.D. located?
CHARLOTTE LIM, M.D. is located at 975 PORT WASHINGTON RD, GRAFTON, WI, 53024. Phone: (262) 329-1400.
What is CHARLOTTE LIM, M.D.'s NPI number?
CHARLOTTE LIM, M.D.'s National Provider Identifier (NPI) is 1154343200, issued on 07/24/2006.
How many Undersea and Hyperbaric Medicine (Preventive Medicine) Physician providers are there in the US?
There are 237 Undersea and Hyperbaric Medicine (Preventive Medicine) Physician providers across 41 states in the US. The average Undersea and Hyperbaric Medicine (Preventive Medicine) Physician provider writes 522 Medicare Part D claims per year.
Does CHARLOTTE LIM, M.D. accept Medicare?
CHARLOTTE LIM, M.D. appears in CMS Medicare data with 57 Part D claims and 36 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CHARLOTTE LIM, M.D.'s credentials?
CHARLOTTE LIM, M.D.'s NPI is 1154343200 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

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