2026 NPPES data Geriatric Medicine (Internal Medicine) Physician NPI 1699753806 M.D.
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CORNELIO NAGUIT, M.D.

Geriatric Medicine (Internal Medicine) Physician in CARLETON, Michigan. 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
4K
Medicare Part D claims · 286 beneficiaries · Geriatric Medicine (Internal Medicine) Physician avg: 4K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$212.16
11 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

CORNELIO NAGUIT, M.D. filed 4,207 Medicare Part D claims in 2023 as a Geriatric Medicine (Internal Medicine) Physician in CARLETON, Michigan, prescribing 90% generic.

4K
Part D claims, 2023
90%
generic prescribing
$212.16
industry payments (Sunshine Act)

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.

CORNELIO NAGUIT, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

4,207 Top 8% higher than 92% 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)

CORNELIO NAGUIT, 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 CORNELIO NAGUIT, M.D.?

Quality data not reported

NPI registry status

Active

Issued 01/06/2006

NPI 1699753806

Primary specialty

Geriatric Medicine (Internal Medicine) Physician

Niche

4,161 US NPIs in this specialty

Medicare Part D claims

4,207 5% vs specialty avg

2023 prescription claims

Specialty avg: 4,450

Specialty distribution in Michigan

How Geriatric Medicine (Internal Medicine) Physician compares to other specialties among Michigan providers

Michigan providers

Geriatric Medicine (Internal Medicine) Physician share within Michigan

1. Geriatric Medicine (Internal Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Geriatric Medicine (Internal Medicine) Physician share within Michigan

Specialty board-certification context

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

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

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

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

CORNELIO NAGUIT, M.D. is a Geriatric Medicine (Internal Medicine) Physician provider practicing in CARLETON, Michigan, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1699753806. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

CORNELIO NAGUIT, M.D. appears in the CMS NPPES registry as a Geriatric Medicine (Internal Medicine) Physician provider holding M.D. credentials at 130 MEDICAL CENTER DR, CARLETON, MI, 48117, with a listed phone of (734) 654-2169. NPI 1699753806 was issued on 01/06/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what NAGUIT 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 4,207 prescription claims written by this provider, covering 286 Medicare beneficiaries and totaling roughly $420K in drug spend, split 10% brand-name and 90% generic by claim count, with an opioid prescribing rate of 6.5%. 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.

Geriatric Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 4,161 enrolled providers across 52 states and an average of 4,450 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

130 MEDICAL CENTER DR
CARLETON, MI 48117

Provider Details

NPI 1699753806
Specialty Geriatric Medicine (Internal Medicine) Physician
Credentials M.D.
Gender Male
NPI Issued 01/06/2006

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 CORNELIO NAGUIT, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$212

Largest payer

Indivior 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.

License & disciplinary context — Michigan MI-BOM 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 ~41K Michigan medical licensees in 2023 — they are NOT specific to CORNELIO NAGUIT, M.D.. To verify CORNELIO NAGUIT, M.D.'s current license status, search the MI-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

123
Total board actions, Michigan 2023
Across 120 cases
3.00
Actions per 1,000 licensees
Michigan statewide rate
probation
Most common action type
44 cases

MI-BOM 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 Michigan disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

CORNELIO NAGUIT, M.D. — brand share 10.0%
Specialty average (est.)

10% brand-name claims vs 90% generic, on 4,207 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.

4,207
Total Claims
$420K
Total Drug Cost
286
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
9,087
Total Day Supply
264,119
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$308K
Generic Drug Cost
$109K
Opioid Claims
274 (6.5% rate)
Antibiotic Claims
43

Patient Demographics

Average Patient Age
66.2 years
Avg HCC Risk Score
1.37
Gender Split
55% female / 45% male
Age Distribution
<65: 93, 65-74: 140, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Atorvastatin Calcium
299
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
206
Buprenorphine-Naloxone
Buprenorphine Hcl/Naloxone Hcl
184
Levothyroxine Sodium
160
Lisinopril
144
Amlodipine Besylate
134
Omeprazole
116
Gabapentin
94
Metformin Hcl
92
Lisinopril-Hydrochlorothiazide
Lisinopril/Hydrochlorothiazide
77

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

Geriatric Medicine (Internal Medicine) Physician Overview

How CORNELIO NAGUIT, M.D. fits within the Geriatric Medicine (Internal Medicine) Physician landscape nationally.

4,161
Geriatric Medicine (Internal Medicine) Physician Providers in US
52
States with Geriatric Medicine (Internal Medicine) Physician
4,450
Avg Claims per Provider

CORNELIO NAGUIT, M.D.'s 4,207 claims are below the specialty average of 4,450.

Nearby Geriatric Medicine (Internal Medicine) Physician Providers in Michigan

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

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

Frequently Asked Questions

What is CORNELIO NAGUIT, M.D.'s specialty?
CORNELIO NAGUIT, M.D. specializes in Geriatric Medicine (Internal Medicine) Physician and practices in CARLETON, Michigan. Credentials: M.D..
How much does CORNELIO NAGUIT, M.D. prescribe under Medicare Part D?
In 2023, CORNELIO NAGUIT, M.D. wrote 4,207 Medicare Part D claims totaling $420K in drug costs for 286 beneficiaries.
Where is CORNELIO NAGUIT, M.D. located?
CORNELIO NAGUIT, M.D. is located at 130 MEDICAL CENTER DR, CARLETON, MI, 48117. Phone: (734) 654-2169.
What is CORNELIO NAGUIT, M.D.'s NPI number?
CORNELIO NAGUIT, M.D.'s National Provider Identifier (NPI) is 1699753806, issued on 01/06/2006.
Does CORNELIO NAGUIT, M.D. prescribe more brand-name or generic drugs?
CORNELIO NAGUIT, M.D.'s prescribing is 10% brand-name and 90% generic drugs by claim count, with $308K in brand drug costs.
Does CORNELIO NAGUIT, M.D. prescribe opioids?
Yes, CORNELIO NAGUIT, M.D. had 274 opioid claims in 2023 with an opioid prescribing rate of 6.5%.
How many Geriatric Medicine (Internal Medicine) Physician providers are there in the US?
There are 4,161 Geriatric Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Internal Medicine) Physician provider writes 4,450 Medicare Part D claims per year.
What drugs does CORNELIO NAGUIT, M.D. prescribe most often?
Based on 2023 Medicare Part D data, CORNELIO NAGUIT, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Hydrocodone-Acetaminophen, Buprenorphine-Naloxone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CORNELIO NAGUIT, M.D. accept Medicare?
CORNELIO NAGUIT, M.D. appears in CMS Medicare data with 4,207 Part D claims and 286 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CORNELIO NAGUIT, M.D.'s credentials?
CORNELIO NAGUIT, M.D.'s NPI is 1699753806 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