NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1407999246 M.D.
Verify on CMS → Franklin Diaz, M.D.
Nephrology Physician in Lawrenceville, Georgia.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 10,569 in Nephrology 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
998
Medicare Part D claims · 139 beneficiaries · Nephrology Physician avg: 1K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Franklin Diaz, M.D. filed 998 Medicare Part D claims in 2023 as a Nephrology Physician in Lawrenceville, Georgia.
- 998
- Part D claims, 2023
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.
Franklin Diaz, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
998 Top 25% higher than 75% of 1,370,886 prescribers
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)
Franklin Diaz, 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 Franklin Diaz, M.D.?
Quality data not reportedPrimary specialty
Nephrology Physician
Medicare Part D claims
998 31% vs specialty avg
Specialty distribution in Georgia
How Nephrology Physician compares to other specialties among Georgia 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 Nephrology 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).
Franklin Diaz, M.D. appears in the CMS NPPES registry as a Nephrology Physician provider holding M.D. credentials at 601A PROFESSIONAL DRIVE STE 225, Lawrenceville, GA, 30046, with a listed phone of (770) 513-8028. NPI 1407999246 was issued on 02/14/2007.
Medicare Part D records for calendar year 2023 show 998 prescription claims written by this provider, covering 139 Medicare beneficiaries and totaling roughly $162K in drug spend.
Nephrology Physician is a mid-sized specialty nationwide, with 10,569 enrolled providers across 55 states and an average of 1,454 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
Provider Details
| NPI | 1407999246 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 02/14/2007 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
998
Total Claims
$162K
Total Drug Cost
139
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,333
- Total Day Supply
- 68,982
- Generic Drug Cost
- $39K
- Antibiotic Claims
- 23
Patient Demographics
- Average Patient Age
- 71.2 years
- Avg HCC Risk Score
- 3.66
- Gender Split
- 53% female / 47% male
- Age Distribution
- <65: 27, 65-74: 56, 75-84: 43, 85+: 13
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Franklin Diaz, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Metoprolol Succinate
Metoprolol Succinate
77 claims
- Losartan Potassium
Losartan Potassium
68 claims
- Furosemide
Furosemide
59 claims
- Amlodipine Besylate
Amlodipine Besylate
51 claims
- Nifedipine Er
Nifedipine Er
48 claims
- Hydralazine Hcl
Hydralazine Hcl
34 claims
- Lisinopril
Lisinopril
31 claims
- Calcium Acetate 25
Calcium Acetate
25 claims
| Drug | Claims |
|---|---|
| Metoprolol Succinate | 77 |
| Losartan Potassium | 68 |
| Furosemide | 59 |
| Amlodipine Besylate | 51 |
| Nifedipine Er Nifedipine | 48 |
| Hydralazine Hcl | 34 |
| Lisinopril | 31 |
| Calcium Acetate | 25 |
| Farxiga Dapagliflozin Propanediol | 24 |
| Calcitriol | 23 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Franklin Diaz, M.D. fits within the Nephrology Physician landscape nationally.
10,569
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider
Franklin Diaz, M.D.'s 998 claims are below the specialty average of 1,454.
Nearby Nephrology Physician Providers in Georgia
Other clinicians with the same primary specialty enrolled in Georgia, drawn from the same CMS NPPES roster as Diaz.
Dr. Mahboob Aamer
M D
Alpharetta, GA
Dr. Mazen Abdalla
M.D.
Snellville, GA
Dr. Afu Abdul
MD
Cartersville, GA
Dr. Mohamed Abidian
MD
Gainesville, GA
Dr. Ismail Abubakar Ibrahim
MBBS
Albany, GA
Compare Nephrology 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 Georgia medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Nephrology 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.
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Medical Specialties Explained
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Frequently Asked Questions
What is Franklin Diaz, M.D.'s specialty? ▼
Franklin Diaz, M.D. specializes in Nephrology Physician and practices in Lawrenceville, Georgia. Credentials: M.D..
How much does Franklin Diaz, M.D. prescribe under Medicare Part D? ▼
In 2023, Franklin Diaz, M.D. wrote 998 Medicare Part D claims totaling $162K in drug costs for 139 beneficiaries.
Where is Franklin Diaz, M.D. located? ▼
Franklin Diaz, M.D. is located at 601A PROFESSIONAL DRIVE STE 225, Lawrenceville, GA, 30046. Phone: (770) 513-8028.
What is Franklin Diaz, M.D.'s NPI number? ▼
Franklin Diaz, M.D.'s National Provider Identifier (NPI) is 1407999246, issued on 02/14/2007.
How many Nephrology Physician providers are there in the US? ▼
There are 10,569 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,454 Medicare Part D claims per year.
What drugs does Franklin Diaz, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Franklin Diaz, M.D.'s most frequently prescribed drugs include Metoprolol Succinate, Losartan Potassium, Furosemide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Franklin Diaz, M.D. accept Medicare? ▼
Franklin Diaz, M.D. appears in CMS Medicare data with 998 Part D claims and 139 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Franklin Diaz, M.D.'s credentials? ▼
Franklin Diaz, M.D.'s NPI is 1407999246 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
Compiled from official public sources by the PlainDoctor editorial team.
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.