NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1023423290 M.D.
Verify on CMS → Luiz Fernando Leonavicius Guimaraes Franco, M.D.
Endocrinology, Diabetes & Metabolism Physician in Duluth, Minnesota.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 7,871 in Endocrinology, Diabetes & Metabolism 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
2K
Medicare Part D claims · 334 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
51%
generic claims · 44% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Luiz Fernando Leonavicius Guimaraes Franco, M.D. filed 2,063 Medicare Part D claims in 2023 as an Endocrinology, Diabetes & Metabolism Physician in Duluth, Minnesota, prescribing 51% generic.
- 2K
- Part D claims, 2023
- 51%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥84th
- 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 Luiz Fernando Leonavicius Guimaraes Franco, M.D.
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 1023423290), first enumerated 06/26/2014.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 2,063 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 1023423290 · Endocrinology, Diabetes & Metabolism Physician
NPI-10 · ENUM-MID · TAX-MID · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1023423290
- ENUM-MID 2014
- TAX-MID 8K Endocrinology, Diabetes
- RX-MID 2,063
- BOOK-THIN 141 in Minnesota
- PHOTO-ENUM Donald Caraccio · 2014
Luiz Fernando Leonavicius Guimaraes Franco, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,063 ≥ 84th percentile 84% of 1,370,886 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 · 2023
✓
Board certification likely (heuristic, not verified)
Luiz Fernando Leonavicius Guimaraes Franco, M.D. 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 Luiz Fernando Leonavicius Guimaraes Franco, M.D.?
Quality data not reportedPrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
2,063 22% vs specialty avg
Specialty distribution in Minnesota
How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Minnesota 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 Endocrinology, Diabetes & Metabolism 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 | 1023423290 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 06/26/2014 |
Hospital and facility affiliations
Facilities where Luiz Fernando Leonavicius Guimaraes Franco, 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.
Tallahassee Memorial Healthcare Inc
Tallahassee, FL
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 · Above average
Luiz Fernando Leonavicius Guimaraes Franco, M.D. - brand share 44.0%
Endocrinology, Diabetes & Metabolism Physician average
44% brand-name claims vs 51% generic, on 2,063 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.
2,063
Total Claims
$963K
Total Drug Cost
334
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,876
- Total Day Supply
- 112,036
- Brand vs Generic
- 44% brand / 51% generic
- Brand Drug Cost
- $911K
- Generic Drug Cost
- $39K
Patient Demographics
- Average Patient Age
- 68.1 years
- Avg HCC Risk Score
- 1.63
- Gender Split
- 64% female / 36% male
- Age Distribution
- <65: 81, 65-74: 165, 75-84: 71, 85+: 17
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Luiz Fernando Leonavicius Guimaraes Franco, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
251 claims
- Ozempic
Ozempic
221 claims
- Methimazole
Methimazole
153 claims
- Metformin Hcl Er
Metformin Hcl Er
102 claims
- Jardiance 55
Jardiance
55 claims
- Atorvastatin Calcium 53
Atorvastatin Calcium
53 claims
- Hydrocortisone 51
Hydrocortisone
51 claims
- Losartan Potassium 43
Losartan Potassium
43 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 251 |
| Ozempic Semaglutide | 221 |
| Methimazole | 153 |
| Metformin Hcl Er Metformin Hcl | 102 |
| Jardiance Empagliflozin | 55 |
| Atorvastatin Calcium | 53 |
| Hydrocortisone | 51 |
| Losartan Potassium | 43 |
| Novolog Flexpen Insulin Aspart | 42 |
| Pioglitazone Hcl | 42 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Endocrinology, Diabetes & Metabolism Physician in MN →
All providers in Minnesota →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How Luiz Fernando Leonavicius Guimaraes Franco, M.D. fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.
7,871
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider
Luiz Fernando Leonavicius Guimaraes Franco, M.D.'s 2,063 claims are below the specialty average of 2,639.
Nationwide Endocrinology, Diabetes & Metabolism Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Leonavicius Guimaraes Franco, both outside Minnesota so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2014)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Minnesota
Other clinicians with the same primary specialty enrolled in Minnesota, drawn from the same CMS NPPES roster as Leonavicius Guimaraes Franco.
One of 141 Endocrinology, Diabetes & Metabolism Physician providers enrolled in Minnesota, 5 are shown here.
Dr. Charles Abboud
MBBCH
Rochester, MN
Dr. Munir Abid
MD
Saint Paul, MN
Dr. Ammar Ahmed
MBBS, MSC
Minneapolis, MN
Dr. Mohammed Ahmed
MD
Coon Rapids, MN
Dr. Alaa Al Nofal
MD
Rochester, MN
Compare Endocrinology, Diabetes & Metabolism Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Luiz Fernando Leonavicius Guimaraes Franco, M.D.'s specialty? ▼
Luiz Fernando Leonavicius Guimaraes Franco, M.D. specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Duluth, Minnesota. Credentials: M.D..
How much does Luiz Fernando Leonavicius Guimaraes Franco, M.D. prescribe under Medicare Part D? ▼
In 2023, Luiz Fernando Leonavicius Guimaraes Franco, M.D. wrote 2,063 Medicare Part D claims totaling $963K in drug costs for 334 beneficiaries.
Where is Luiz Fernando Leonavicius Guimaraes Franco, M.D. located? ▼
Luiz Fernando Leonavicius Guimaraes Franco, M.D. is located at 502 E 2ND ST, Duluth, MN, 55805. Phone: (218) 786-8364.
What is Luiz Fernando Leonavicius Guimaraes Franco, M.D.'s NPI number? ▼
Luiz Fernando Leonavicius Guimaraes Franco, M.D.'s National Provider Identifier (NPI) is 1023423290, issued on 06/26/2014.
Does Luiz Fernando Leonavicius Guimaraes Franco, M.D. prescribe more brand-name or generic drugs? ▼
Luiz Fernando Leonavicius Guimaraes Franco, M.D.'s prescribing is 44% brand-name and 51% generic drugs by claim count, with $911K in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US? ▼
There are 7,871 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does Luiz Fernando Leonavicius Guimaraes Franco, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Luiz Fernando Leonavicius Guimaraes Franco, M.D.'s most frequently prescribed drugs include Levothyroxine Sodium, Ozempic, Methimazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Luiz Fernando Leonavicius Guimaraes Franco, M.D. accept Medicare? ▼
Luiz Fernando Leonavicius Guimaraes Franco, M.D. appears in CMS Medicare data with 2,063 Part D claims and 334 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Luiz Fernando Leonavicius Guimaraes Franco, M.D.'s credentials? ▼
Luiz Fernando Leonavicius Guimaraes Franco, M.D.'s NPI is 1023423290 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
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 (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
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 May 2026.