2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1023632668 MD
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JONATHAN RIVERA DIAZ, MD

Endocrinology, Diabetes & Metabolism Physician in POLLOCKSVILLE, North Carolina. 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
360
Medicare Part D claims · 81 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K

What the federal data shows

JONATHAN RIVERA DIAZ, MD filed 360 Medicare Part D claims in 2023 as a Endocrinology, Diabetes & Metabolism Physician in POLLOCKSVILLE, North Carolina.

360
Part D claims, 2023
Likely
board-certified (heuristic)

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.

JONATHAN RIVERA DIAZ, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

360 Top 43% higher than 57% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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 certification likely (heuristic — not verified)

JONATHAN RIVERA DIAZ, MD 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 JONATHAN RIVERA DIAZ, MD?

Quality data not reported

NPI registry status

Active

Issued 05/29/2020

NPI 1023632668

Primary specialty

Endocrinology, Diabetes & Metabolism Physician

Mid-sized

7,852 US NPIs in this specialty

Medicare Part D claims

360 86% vs specialty avg

2023 prescription claims

Specialty avg: 2,639

Specialty distribution in North Carolina

How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among North Carolina providers

North Carolina providers

Endocrinology, Diabetes & Metabolism Physician share within North Carolina

1. Endocrinology, Diabetes & Metabolism Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Endocrinology, Diabetes & Metabolism Physician share within North Carolina

Specialty board-certification context

Estimated specialty board-certified rate — Endocrinology, Diabetes & Metabolism Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Endocrinology, Diabetes & Metabolism Physician ABMS/AOA estimate

Est. board-certified rate (Endocrinology, Diabetes & Metabolism Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Endocrinology, Diabetes & Metabolism Physician) — 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).

JONATHAN RIVERA DIAZ, MD appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding MD credentials at 137 MEDICAL LN, POLLOCKSVILLE, NC, 28573, with a listed phone of (252) 633-1010. NPI 1023632668 was issued on 05/29/2020. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what RIVERA 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 360 prescription claims written by this provider, covering 81 Medicare beneficiaries and totaling roughly $98K 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.

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

137 MEDICAL LN
POLLOCKSVILLE, NC 28573

Provider Details

NPI 1023632668
Specialty Endocrinology, Diabetes & Metabolism Physician
Credentials MD
Gender Male
NPI Issued 05/29/2020

Hospital and facility affiliations

Facilities where JONATHAN RIVERA DIAZ, MD 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.

CAROLINAEAST PHYSICIANS
POLLOCKSVILLE, NC

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Medicare Part D Prescribing Data

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

360
Total Claims
$98K
Total Drug Cost
81
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
512
Total Day Supply
14,233
Generic Drug Cost
$5K
Antibiotic Claims
16

Patient Demographics

Average Patient Age
66.0 years
Avg HCC Risk Score
1.95
Gender Split
64% female / 36% male
Age Distribution
<65: 30, 65-74: 35, 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 JONATHAN RIVERA DIAZ, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Levothyroxine Sodium
32
Atorvastatin Calcium
22
Clopidogrel
Clopidogrel Bisulfate
13
Levemir Flexpen
Insulin Detemir
13
Humalog Kwikpen U-100
Insulin Lispro
12
Lisinopril
12
Duloxetine Hcl
11
Hydrochlorothiazide
11
Ozempic
Semaglutide
11

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

Endocrinology, Diabetes & Metabolism Physician Overview

How JONATHAN RIVERA DIAZ, MD 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

JONATHAN RIVERA DIAZ, MD's 360 claims are below the specialty average of 2,639.

Nearby Endocrinology, Diabetes & Metabolism Physician Providers in North Carolina

Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as RIVERA DIAZ.

Compare Endocrinology, Diabetes & Metabolism Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JONATHAN RIVERA DIAZ, MD's specialty?
JONATHAN RIVERA DIAZ, MD specializes in Endocrinology, Diabetes & Metabolism Physician and practices in POLLOCKSVILLE, North Carolina. Credentials: MD.
How much does JONATHAN RIVERA DIAZ, MD prescribe under Medicare Part D?
In 2023, JONATHAN RIVERA DIAZ, MD wrote 360 Medicare Part D claims totaling $98K in drug costs for 81 beneficiaries.
Where is JONATHAN RIVERA DIAZ, MD located?
JONATHAN RIVERA DIAZ, MD is located at 137 MEDICAL LN, POLLOCKSVILLE, NC, 28573. Phone: (252) 633-1010.
What is JONATHAN RIVERA DIAZ, MD's NPI number?
JONATHAN RIVERA DIAZ, MD's National Provider Identifier (NPI) is 1023632668, issued on 05/29/2020.
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 JONATHAN RIVERA DIAZ, MD prescribe most often?
Based on 2023 Medicare Part D data, JONATHAN RIVERA DIAZ, MD's most frequently prescribed drugs include Levothyroxine Sodium, Atorvastatin Calcium, Clopidogrel. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JONATHAN RIVERA DIAZ, MD accept Medicare?
JONATHAN RIVERA DIAZ, MD appears in CMS Medicare data with 360 Part D claims and 81 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JONATHAN RIVERA DIAZ, MD's credentials?
JONATHAN RIVERA DIAZ, MD's NPI is 1023632668 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

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