2026 NPPES data Occupational Medicine Physician NPI 1689673626 M.D.
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Nardo Buena, M.D.

Occupational Medicine Physician in Riverside, California. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 2,230 in Occupational Medicine 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
1K
Medicare Part D claims · 689 beneficiaries · Occupational Medicine Physician avg: 605
Generic prescribing
91%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Nardo Buena, M.D. filed 1,039 Medicare Part D claims in 2023 as a Occupational Medicine Physician in Riverside, California, prescribing 91% generic.

1K
Part D claims, 2023
91%
generic prescribing
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.

Nardo Buena, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

1,039 Top 24% higher than 76% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). This entry sits in this band. 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. 2K+: 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)

Nardo Buena, M.D. 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 Nardo Buena, M.D.?

Quality data not reported

NPI registry status

Active

Issued 07/20/2005

NPI 1689673626

Primary specialty

Occupational Medicine Physician

Niche

2,230 US NPIs in this specialty

Medicare Part D claims

1,039 72% vs specialty avg

2023 prescription claims

Specialty avg: 605

Specialty distribution in California

How Occupational Medicine Physician compares to other specialties among California providers

California providers

Largest specialties in California (% of in-state providers)

Behavior Technician - 17.3%Behavior Technician17.3%Marriage & Family Therapist - 5.5%Marriage & Family Therapist5.5%Student in an Organized Health Care Education/Training Program - 5%Student in an Organized Health Care Education/Training Program5%Mental Health Counselor - 3.9%Mental Health Counselor3.9%Pharmacist - 3.5%Pharmacist3.5%Clinical Social Worker - 3.1%Clinical Social Worker3.1%Occupational Medicine Physician - 0%Occupational Medicine Physician0%
Largest specialties in California (% of in-state 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 Occupational Medicine Physician. Verify directly:

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).

Nardo Buena, M.D. appears in the CMS NPPES registry as a Occupational Medicine Physician provider holding M.D. credentials at 7117 BROCKTON AVE, Riverside, CA, 92506, with a listed phone of (951) 782-3789. NPI 1689673626 was issued on 07/20/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Buena 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 1,039 prescription claims written by this provider, covering 689 Medicare beneficiaries and totaling roughly $16K in drug spend, split 5% brand-name and 91% generic by claim count, with an opioid prescribing rate of 1.6%. 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.

Occupational Medicine Physician is a narrow specialty nationwide, with 2,230 enrolled providers across 52 states and an average of 605 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

7117 BROCKTON AVE
Riverside, CA 92506

Provider Details

NPI 1689673626
Specialty Occupational Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 07/20/2005

Hospital and facility affiliations

Facilities where Nardo Buena, M.D. 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.

Riverside Medical Clinic Inc
Riverside, CA

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

License & disciplinary context - California MBC 2023 annual report

Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Nardo Buena, M.D.. To verify Nardo Buena, M.D.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Generic-heavy

Nardo Buena, M.D. - brand share 5.0%
Occupational Medicine Physician average

5% brand-name claims vs 91% generic, on 1,039 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.

1,039
Total Claims
$16K
Total Drug Cost
689
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,047
Total Day Supply
12,740
Brand vs Generic
5% brand / 91% generic
Brand Drug Cost
$5K
Generic Drug Cost
$11K
Opioid Claims
17 (1.6% rate)
Antibiotic Claims
399

Patient Demographics

Average Patient Age
73.7 years
Avg HCC Risk Score
1.40
Gender Split
66% female / 34% male
Age Distribution
<65: 49, 65-74: 345, 75-84: 226, 85+: 69

Top Prescribed Drugs (Medicare Part D)

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

What Nardo Buena, M.D. 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
Azithromycin
123
Diclofenac Sodium
69
Prednisone
60
Albuterol Sulfate Hfa
Albuterol Sulfate
57
Nitrofurantoin Mono-Macro
Nitrofurantoin Monohyd/M-Cryst
51
Ciprofloxacin Hcl
44
Paxlovid (Eua)
Nirmatrelvir/Ritonavir
38
Cefadroxil
37
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
35
Azelastine Hcl
34

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

Occupational Medicine Physician Overview

How Nardo Buena, M.D. fits within the Occupational Medicine Physician landscape nationally.

2,230
Occupational Medicine Physician Providers in US
52
States with Occupational Medicine Physician
605
Avg Claims per Provider

Nardo Buena, M.D.'s 1,039 claims are above the specialty average of 605.

Nearby Occupational Medicine Physician Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Buena.

Compare Occupational Medicine 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 California medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Occupational Medicine 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.

Frequently Asked Questions

What is Nardo Buena, M.D.'s specialty?
Nardo Buena, M.D. specializes in Occupational Medicine Physician and practices in Riverside, California. Credentials: M.D..
How much does Nardo Buena, M.D. prescribe under Medicare Part D?
In 2023, Nardo Buena, M.D. wrote 1,039 Medicare Part D claims totaling $16K in drug costs for 689 beneficiaries.
Where is Nardo Buena, M.D. located?
Nardo Buena, M.D. is located at 7117 BROCKTON AVE, Riverside, CA, 92506. Phone: (951) 782-3789.
What is Nardo Buena, M.D.'s NPI number?
Nardo Buena, M.D.'s National Provider Identifier (NPI) is 1689673626, issued on 07/20/2005.
Does Nardo Buena, M.D. prescribe more brand-name or generic drugs?
Nardo Buena, M.D.'s prescribing is 5% brand-name and 91% generic drugs by claim count, with $5K in brand drug costs.
Does Nardo Buena, M.D. prescribe opioids?
Yes, Nardo Buena, M.D. had 17 opioid claims in 2023 with an opioid prescribing rate of 1.6%.
How many Occupational Medicine Physician providers are there in the US?
There are 2,230 Occupational Medicine Physician providers across 52 states in the US. The average Occupational Medicine Physician provider writes 605 Medicare Part D claims per year.
What drugs does Nardo Buena, M.D. prescribe most often?
Based on 2023 Medicare Part D data, Nardo Buena, M.D.'s most frequently prescribed drugs include Azithromycin, Diclofenac Sodium, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Nardo Buena, M.D. accept Medicare?
Nardo Buena, M.D. appears in CMS Medicare data with 1,039 Part D claims and 689 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Nardo Buena, M.D.'s credentials?
Nardo Buena, M.D.'s NPI is 1689673626 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

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.