NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1457461121 MD FACE
Verify on CMS → Dilia Diaz-Garcia, MD FACE
Endocrinology, Diabetes & Metabolism Physician in San Juan, 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 7,852 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
3K
Medicare Part D claims · 233 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
70%
generic claims · 29% 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
Dilia Diaz-Garcia, MD FACE filed 3,368 Medicare Part D claims in 2023 as a Endocrinology, Diabetes & Metabolism Physician in San Juan, Puerto Rico, prescribing 70% generic.
- 3K
- Part D claims, 2023
- 70%
- 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.
Dilia Diaz-Garcia, MD FACE's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
3,368 Top 10% higher than 90% 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)
Dilia Diaz-Garcia, MD FACE 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 Dilia Diaz-Garcia, MD FACE?
Quality data not reportedPrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
3,368 28% vs specialty avg
Specialty distribution in Puerto Rico
How Endocrinology, Diabetes & Metabolism 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 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).
Dilia Diaz-Garcia, MD FACE appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding MD FACE credentials at 29 CALLE WASHINGTON, San Juan, PR, 00907, with a listed phone of (787) 725-8905. NPI 1457461121 was issued on 08/30/2006.
Medicare Part D records for calendar year 2023 show 3,368 prescription claims written by this provider, covering 233 Medicare beneficiaries and totaling roughly $535K in drug spend, split 29% brand-name and 70% generic by claim count.
Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,852 enrolled providers across 54 states and an average of 2,639 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 | 1457461121 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | MD FACE |
| Gender | Female |
| NPI Issued | 08/30/2006 |
Brand vs generic prescribing mix · Above average
Dilia Diaz-Garcia, MD FACE - brand share 29.0%
Endocrinology, Diabetes & Metabolism Physician average
29% brand-name claims vs 70% generic, on 3,368 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.
3,368
Total Claims
$535K
Total Drug Cost
233
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 7,520
- Total Day Supply
- 222,965
- Brand vs Generic
- 29% brand / 70% generic
- Brand Drug Cost
- $476K
- Generic Drug Cost
- $57K
- Antibiotic Claims
- 54
Patient Demographics
- Average Patient Age
- 74.7 years
- Avg HCC Risk Score
- 1.32
- Gender Split
- 81% female / 19% male
- Age Distribution
- <65: 14, 65-74: 120, 75-84: 61, 85+: 38
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Dilia Diaz-Garcia, MD FACE prescribes most
Top Medicare Part D drugs by claim count, 2023
- Synthroid
Synthroid
407 claims
- Rosuvastatin Calcium 146
Rosuvastatin Calcium
146 claims
- Simvastatin 125
Simvastatin
125 claims
- Amlodipine Besylate 106
Amlodipine Besylate
106 claims
- Levothyroxine Sodium 85
Levothyroxine Sodium
85 claims
- Atorvastatin Calcium 82
Atorvastatin Calcium
82 claims
- Metoprolol Succinate 79
Metoprolol Succinate
79 claims
- Gabapentin 72
Gabapentin
72 claims
| Drug | Claims |
|---|---|
| Synthroid Levothyroxine Sodium | 407 |
| Rosuvastatin Calcium | 146 |
| Simvastatin | 125 |
| Amlodipine Besylate | 106 |
| Levothyroxine Sodium | 85 |
| Atorvastatin Calcium | 82 |
| Metoprolol Succinate | 79 |
| Gabapentin | 72 |
| Losartan Potassium | 68 |
| Irbesartan | 61 |
* 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 PR →
All providers in Puerto Rico →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How Dilia Diaz-Garcia, MD FACE fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.
7,852
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider
Dilia Diaz-Garcia, MD FACE's 3,368 claims are above the specialty average of 2,639.
Nearby Endocrinology, Diabetes & Metabolism 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-Garcia.
Dr. Anardi Agosto Mujica
M.D.
Cayey, PR
Dr. Manuel Alegre-Hernandez
MD
San Juan, PR
Dr. Myriam Allende-Vigo
MD
Humacao, PR
Dr. Milliette Alvarado-Santiago
M.D.
Rio Piedras, PR
Dr. Isabel Arroyo Gomez
MD
San Juan, PR
Compare Endocrinology, Diabetes & Metabolism 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 Endocrinology, Diabetes & Metabolism 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 Dilia Diaz-Garcia, MD FACE's specialty? ▼
Dilia Diaz-Garcia, MD FACE specializes in Endocrinology, Diabetes & Metabolism Physician and practices in San Juan, Puerto Rico. Credentials: MD FACE.
How much does Dilia Diaz-Garcia, MD FACE prescribe under Medicare Part D? ▼
In 2023, Dilia Diaz-Garcia, MD FACE wrote 3,368 Medicare Part D claims totaling $535K in drug costs for 233 beneficiaries.
Where is Dilia Diaz-Garcia, MD FACE located? ▼
Dilia Diaz-Garcia, MD FACE is located at 29 CALLE WASHINGTON, San Juan, PR, 00907. Phone: (787) 725-8905.
What is Dilia Diaz-Garcia, MD FACE's NPI number? ▼
Dilia Diaz-Garcia, MD FACE's National Provider Identifier (NPI) is 1457461121, issued on 08/30/2006.
Does Dilia Diaz-Garcia, MD FACE prescribe more brand-name or generic drugs? ▼
Dilia Diaz-Garcia, MD FACE's prescribing is 29% brand-name and 70% generic drugs by claim count, with $476K in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US? ▼
There are 7,852 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 Dilia Diaz-Garcia, MD FACE prescribe most often? ▼
Based on 2023 Medicare Part D data, Dilia Diaz-Garcia, MD FACE's most frequently prescribed drugs include Synthroid, Rosuvastatin Calcium, Simvastatin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Dilia Diaz-Garcia, MD FACE accept Medicare? ▼
Dilia Diaz-Garcia, MD FACE appears in CMS Medicare data with 3,368 Part D claims and 233 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Dilia Diaz-Garcia, MD FACE's credentials? ▼
Dilia Diaz-Garcia, MD FACE's NPI is 1457461121 with credentials MD FACE. 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.