2026 NPPES data Internal Medicine Physician NPI 1437141199 M.D.
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Charles Nardi, M.D.

Internal Medicine Physician in Navarre, Florida. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers — including 172,858 in Internal Medicine 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
4K
Medicare Part D claims · 196 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Charles Nardi, M.D. filed 3,549 Medicare Part D claims in 2023 as a Internal Medicine Physician in Navarre, Florida, prescribing 91% generic.

4K
Part D claims, 2023
91%
generic prescribing

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.

Charles Nardi, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

3,549 Top 10% higher than 90% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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-eligible specialty (heuristic — not verified)

Charles Nardi, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Charles Nardi, M.D.?

Quality data not reported

NPI registry status

Active

Issued 08/18/2005

NPI 1437141199

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

3,549 31% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Florida

How Internal Medicine Physician compares to other specialties among Florida providers

Florida providers

Largest specialties in Florida (% of in-state providers)

Behavior Technician — 16.1%Behavior Technician16.1%Mental Health Counselor — 4.8%Mental Health Counselor4.8%Family Nurse Practitioner — 4.5%Family Nurse Practitioner4.5%Pharmacist — 4.2%Pharmacist4.2%Student in an Organized Health Care Education/Training Program — 3.8%Student in an Organized Health Care Education/Training Program3.8%Physical Therapist — 3.1%Physical Therapist3.1%Internal Medicine Physician — 2.4%Internal Medicine Physician2.4%
Largest specialties in Florida (% of in-state providers)

Specialty board-certification context

Estimated specialty board-certified rate — Internal Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Internal Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Internal Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Internal 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).

Charles Nardi, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 8990 NAVARRE PKWY, Navarre, FL, 32566, with a listed phone of (508) 396-0108. NPI 1437141199 was issued on 08/18/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Nardi 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 3,549 prescription claims written by this provider, covering 196 Medicare beneficiaries and totaling roughly $319K in drug spend, split 9% brand-name and 91% generic by claim count, with an opioid prescribing rate of 11.6%. 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

8990 NAVARRE PKWY
Navarre, FL 32566

Provider Details

NPI 1437141199
Specialty Internal Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 08/18/2005

License & disciplinary context — Florida FLDOH 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~75K Florida medical licensees in 2023 — they are NOT specific to Charles Nardi, M.D.. To verify Charles Nardi, M.D.'s current license status, search the FLDOH public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

480
Total board actions, Florida 2023
Across 467 cases
6.40
Actions per 1,000 licensees
Florida statewide rate
monetary fine
Most common action type
138 cases

FLDOH publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Florida disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Generic-heavy

Charles Nardi, M.D. — brand share 9.0%
Internal Medicine Physician average

9% brand-name claims vs 91% generic, on 3,549 2023 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 2023.

3,549
Total Claims
$319K
Total Drug Cost
196
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
8,482
Total Day Supply
249,749
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$241K
Generic Drug Cost
$77K
Opioid Claims
413 (11.6% rate)
Antibiotic Claims
103

Patient Demographics

Average Patient Age
73.8 years
Avg HCC Risk Score
1.03
Gender Split
53% female / 47% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What Charles Nardi, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Amlodipine Besylate
208
Lisinopril
190
Atorvastatin Calcium
187
Oxycodone Hcl
121
Levothyroxine Sodium
109
Simvastatin
109
Tramadol Hcl
109
Alprazolam
96
Zolpidem Tartrate
86
Omeprazole
78

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Internal Medicine Physician Overview

How Charles Nardi, M.D. fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

Charles Nardi, M.D.'s 3,549 claims are above the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Florida

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

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry — providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Florida medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Internal Medicine Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only — they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Charles Nardi, M.D.'s specialty?
Charles Nardi, M.D. specializes in Internal Medicine Physician and practices in Navarre, Florida. Credentials: M.D..
How much does Charles Nardi, M.D. prescribe under Medicare Part D?
In 2023, Charles Nardi, M.D. wrote 3,549 Medicare Part D claims totaling $319K in drug costs for 196 beneficiaries.
Where is Charles Nardi, M.D. located?
Charles Nardi, M.D. is located at 8990 NAVARRE PKWY, Navarre, FL, 32566. Phone: (508) 396-0108.
What is Charles Nardi, M.D.'s NPI number?
Charles Nardi, M.D.'s National Provider Identifier (NPI) is 1437141199, issued on 08/18/2005.
Does Charles Nardi, M.D. prescribe more brand-name or generic drugs?
Charles Nardi, M.D.'s prescribing is 9% brand-name and 91% generic drugs by claim count, with $241K in brand drug costs.
Does Charles Nardi, M.D. prescribe opioids?
Yes, Charles Nardi, M.D. had 413 opioid claims in 2023 with an opioid prescribing rate of 11.6%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Charles Nardi, M.D. prescribe most often?
Based on 2023 Medicare Part D data, Charles Nardi, M.D.'s most frequently prescribed drugs include Amlodipine Besylate, Lisinopril, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Charles Nardi, M.D. accept Medicare?
Charles Nardi, M.D. appears in CMS Medicare data with 3,549 Part D claims and 196 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Charles Nardi, M.D.'s credentials?
Charles Nardi, M.D.'s NPI is 1437141199 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

Compiled from official public sources by the PlainDoctor editorial team.