2026 NPPES data Dentist NPI 1619383981 DMD
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JOMAR DIAZ, DMD

Dentist in SAN JUAN, Puerto Rico. 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
170
Medicare Part D claims · 104 beneficiaries · Dentist avg: 87
Industry payments
$40.01
2 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: JOMAR DIAZ, DMD is a Dentist ([object Object]) practicing in SAN JUAN, Puerto Rico with a Medicare Part D prescribing footprint of 170 claims across 104 beneficiaries . Industry payments of $40.01 across 2 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: JOMAR DIAZ, DMD filed 170 Medicare Part D claims in 2023 across SAN JUAN, Puerto Rico. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

JOMAR DIAZ, DMD at a glance

Quality data not reported

NPI registry status

Active

Issued 07/08/2014

NPI 1619383981

Primary specialty

Dentist

High-volume

93,789 US NPIs in this specialty

Medicare Part D claims

170 95% vs specialty avg

2023 prescription claims

Specialty avg: 87

Specialty distribution in Puerto Rico

How Dentist compares to other specialties among Puerto Rico providers

Puerto Rico providers

Dentist share within Puerto Rico

1. Dentist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Dentist share within Puerto Rico

Specialty board-certification context

Estimated specialty board-certified rate — Dentist (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Dentist ABMS/AOA estimate

Est. board-certified rate (Dentist) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Dentist) — 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).

JOMAR DIAZ, DMD is a Dentist provider practicing in SAN JUAN, Puerto Rico, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: DMD. NPI: 1619383981. 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.

JOMAR DIAZ, DMD appears in the CMS NPPES registry as a Dentist provider holding DMD credentials at UNIVERSITY DISTRICT HOSPITAL PUERTO RICO MEDICAL CENTER, SAN JUAN, PR, 00935, with a listed phone of (787) 754-0101. NPI 1619383981 was issued on 07/08/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DIAZ 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 170 prescription claims written by this provider, covering 104 Medicare beneficiaries and totaling roughly $957 in drug spend. 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.

Dentist is a high-volume specialty nationwide, with 93,789 enrolled providers across 56 states and an average of 87 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

UNIVERSITY DISTRICT HOSPITAL PUERTO RICO MEDICAL CENTER
SAN JUAN, PR 00935

Provider Details

NPI 1619383981
Specialty Dentist
Credentials DMD
Gender Female
NPI Issued 07/08/2014

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 JOMAR DIAZ, DMD. Source: openpaymentsdata.cms.gov.

Total received

$40

Largest payer

OraPharma, a division of Bausch Health US, LLC

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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

170
Total Claims
$957
Total Drug Cost
104
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
170
Total Day Supply
1,210
Generic Drug Cost
$870
Antibiotic Claims
126

Patient Demographics

Average Patient Age
69.8 years
Avg HCC Risk Score
1.41
Gender Split
49% female / 51% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Amoxicillin
59
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
35
Clindamycin Hcl
32
Ibuprofen
26
Chlorhexidine Gluconate
12

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

Dentist Overview

How JOMAR DIAZ, DMD fits within the Dentist landscape nationally.

93,789
Dentist Providers in US
56
States with Dentist
87
Avg Claims per Provider

JOMAR DIAZ, DMD's 170 claims are above the specialty average of 87.

Nearby Dentist Providers in Puerto Rico

Other clinicians with the same primary specialty enrolled in Puerto Rico, drawn from the same CMS NPPES roster as DIAZ.

Compare Dentist nationally: see state-by-state distribution →

Frequently Asked Questions

What is JOMAR DIAZ, DMD's specialty?
JOMAR DIAZ, DMD specializes in Dentist and practices in SAN JUAN, Puerto Rico. Credentials: DMD.
How much does JOMAR DIAZ, DMD prescribe under Medicare Part D?
In 2023, JOMAR DIAZ, DMD wrote 170 Medicare Part D claims totaling $957 in drug costs for 104 beneficiaries.
Where is JOMAR DIAZ, DMD located?
JOMAR DIAZ, DMD is located at UNIVERSITY DISTRICT HOSPITAL PUERTO RICO MEDICAL CENTER, SAN JUAN, PR, 00935. Phone: (787) 754-0101.
What is JOMAR DIAZ, DMD's NPI number?
JOMAR DIAZ, DMD's National Provider Identifier (NPI) is 1619383981, issued on 07/08/2014.
How many Dentist providers are there in the US?
There are 93,789 Dentist providers across 56 states in the US. The average Dentist provider writes 87 Medicare Part D claims per year.
What drugs does JOMAR DIAZ, DMD prescribe most often?
Based on 2023 Medicare Part D data, JOMAR DIAZ, DMD's most frequently prescribed drugs include Amoxicillin, Amoxicillin-Clavulanate Potass, Clindamycin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JOMAR DIAZ, DMD accept Medicare?
JOMAR DIAZ, DMD appears in CMS Medicare data with 170 Part D claims and 104 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOMAR DIAZ, DMD's credentials?
JOMAR DIAZ, DMD's NPI is 1619383981 with credentials DMD. 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