NPI registry status
Active
2026 NPPES data Psychiatry Physician NPI 1639118136 MD
Verify on CMS → Franklin Diaz, MD
Psychiatry Physician in Rio Grande, Puerto Rico.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 53,104 in Psychiatry 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 · 200 beneficiaries · Psychiatry Physician avg: 1K
Generic prescribing
99%
generic claims · 1% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Franklin Diaz, MD filed 2,492 Medicare Part D claims in 2023 as a Psychiatry Physician in Rio Grande, Puerto Rico, prescribing 99% generic.
- 2K
- Part D claims, 2023
- 99%
- 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.
Franklin Diaz, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,492 Top 14% higher than 86% 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
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Board-eligible specialty (heuristic, not verified)
Franklin Diaz, MD 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, MD?
Quality data not reportedPrimary specialty
Psychiatry Physician
Medicare Part D claims
2,492 140% vs specialty avg
Specialty distribution in Puerto Rico
How Psychiatry Physician compares to other specialties among Puerto Rico 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 Psychiatry 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, MD appears in the CMS NPPES registry as a Psychiatry Physician provider holding MD credentials at CALLE GARCIA DE LA NOSEDA, Rio Grande, PR, 00745, with a listed phone of (787) 641-0774. NPI 1639118136 was issued on 06/06/2006.
Medicare Part D records for calendar year 2023 show 2,492 prescription claims written by this provider, covering 200 Medicare beneficiaries and totaling roughly $36K in drug spend, split 1% brand-name and 99% generic by claim count.
Psychiatry Physician is a high-volume specialty nationwide, with 53,104 enrolled providers across 56 states and an average of 1,038 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 | 1639118136 |
|---|---|
| Specialty | Psychiatry Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 06/06/2006 |
Brand vs generic prescribing mix · Generic-heavy
Franklin Diaz, MD - brand share 1.0%
Psychiatry Physician average
1% brand-name claims vs 99% generic, on 2,492 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.
2,492
Total Claims
$36K
Total Drug Cost
200
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,541
- Total Day Supply
- 74,921
- Brand vs Generic
- 1% brand / 99% generic
- Brand Drug Cost
- $12K
- Generic Drug Cost
- $24K
- Antibiotic Claims
- 11
Patient Demographics
- Average Patient Age
- 63.7 years
- Avg HCC Risk Score
- 1.60
- Gender Split
- 54% female / 47% male
- Age Distribution
- <65: 99, 65-74: 68, 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.
What Franklin Diaz, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Clonazepam
Clonazepam
341 claims
- Temazepam
Temazepam
275 claims
- Lorazepam
Lorazepam
202 claims
- Sertraline Hcl
Sertraline Hcl
144 claims
- Zolpidem Tartrate
Zolpidem Tartrate
142 claims
- Quetiapine Fumarate 124
Quetiapine Fumarate
124 claims
- Trazodone Hcl 116
Trazodone Hcl
116 claims
- Fluoxetine Hcl 114
Fluoxetine Hcl
114 claims
| Drug | Claims |
|---|---|
| Clonazepam | 341 |
| Temazepam | 275 |
| Lorazepam | 202 |
| Sertraline Hcl | 144 |
| Zolpidem Tartrate | 142 |
| Quetiapine Fumarate | 124 |
| Trazodone Hcl | 116 |
| Fluoxetine Hcl | 114 |
| Risperidone | 86 |
| Mirtazapine | 82 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Psychiatry Physician Overview
How Franklin Diaz, MD fits within the Psychiatry Physician landscape nationally.
53,104
Psychiatry Physician Providers in US
56
States with Psychiatry Physician
1,038
Avg Claims per Provider
Franklin Diaz, MD's 2,492 claims are above the specialty average of 1,038.
Nearby Psychiatry Physician Providers in Puerto Rico
Other clinicians with the same primary specialty enrolled in Puerto Rico, drawn from the same CMS NPPES roster as Diaz.
Dr. Vivian Acevedo
MD
Toa Baja, PR
Dr. Alejandro Acevedo Hernandez
M.D.
Guaynabo, PR
Dr. Hilson Acosta
MD
Cidra, PR
Dr. Deborah Acosta Ramirez
MD
San Juan, PR
Dr. Diogenes Adames
MD
Carolina, PR
Compare Psychiatry 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 Puerto Rico medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Psychiatry 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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Frequently Asked Questions
What is Franklin Diaz, MD's specialty? ▼
Franklin Diaz, MD specializes in Psychiatry Physician and practices in Rio Grande, Puerto Rico. Credentials: MD.
How much does Franklin Diaz, MD prescribe under Medicare Part D? ▼
In 2023, Franklin Diaz, MD wrote 2,492 Medicare Part D claims totaling $36K in drug costs for 200 beneficiaries.
Where is Franklin Diaz, MD located? ▼
Franklin Diaz, MD is located at CALLE GARCIA DE LA NOSEDA, Rio Grande, PR, 00745. Phone: (787) 641-0774.
What is Franklin Diaz, MD's NPI number? ▼
Franklin Diaz, MD's National Provider Identifier (NPI) is 1639118136, issued on 06/06/2006.
Does Franklin Diaz, MD prescribe more brand-name or generic drugs? ▼
Franklin Diaz, MD's prescribing is 1% brand-name and 99% generic drugs by claim count, with $12K in brand drug costs.
How many Psychiatry Physician providers are there in the US? ▼
There are 53,104 Psychiatry Physician providers across 56 states in the US. The average Psychiatry Physician provider writes 1,038 Medicare Part D claims per year.
What drugs does Franklin Diaz, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Franklin Diaz, MD's most frequently prescribed drugs include Clonazepam, Temazepam, Lorazepam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Franklin Diaz, MD accept Medicare? ▼
Franklin Diaz, MD appears in CMS Medicare data with 2,492 Part D claims and 200 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Franklin Diaz, MD's credentials? ▼
Franklin Diaz, MD's NPI is 1639118136 with credentials MD. 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.