2026 NPPES data Undersea and Hyperbaric Medicine (Preventive Medicine) Physician NPI 1801991492 MD
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ROBERT DUNN, MD

Undersea and Hyperbaric Medicine (Preventive Medicine) Physician in SAN ANTONIO, Texas. 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
12
Medicare Part D claims · Undersea and Hyperbaric Medicine (Preventive Medicine) Physician avg: 522

What the federal data shows

ROBERT DUNN, MD filed 12 Medicare Part D claims in 2023 as a Undersea and Hyperbaric Medicine (Preventive Medicine) Physician in SAN ANTONIO, Texas.

12
Part D claims, 2023

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.

ROBERT DUNN, MD's Medicare Part D volume vs every U.S. prescriber

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

12 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 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-eligible specialty (heuristic — not verified)

ROBERT DUNN, 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 ROBERT DUNN, MD?

Quality data not reported

NPI registry status

Active

Issued 09/14/2006

NPI 1801991492

Primary specialty

Undersea and Hyperbaric Medicine (Preventive Medicine) Physician

Rare

237 US NPIs in this specialty

Medicare Part D claims

12 98% vs specialty avg

2023 prescription claims

Specialty avg: 522

Specialty distribution in Texas

How Undersea and Hyperbaric Medicine (Preventive Medicine) Physician compares to other specialties among Texas providers

Texas providers

Undersea and Hyperbaric Medicine (Preventive Medicine) Physician share within Texas

1. Undersea and Hyperbaric Medicine (Preventive Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Undersea and Hyperbaric Medicine (Preventive Medicine) Physician share within Texas

Specialty board-certification context

Estimated specialty board-certified rate — Undersea and Hyperbaric Medicine (Preventive Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Undersea and Hyperbaric Medicine (Preventive Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Undersea and Hyperbaric Medicine (Preventive Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Undersea and Hyperbaric Medicine (Preventive Medicine) 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).

ROBERT DUNN, MD appears in the CMS NPPES registry as a Undersea and Hyperbaric Medicine (Preventive Medicine) Physician provider holding MD credentials at 9522 HUEBNER RD, SAN ANTONIO, TX, 78240, with a listed phone of (210) 478-5390. NPI 1801991492 was issued on 09/14/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DUNN 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 12 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $173 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.

Undersea and Hyperbaric Medicine (Preventive Medicine) Physician is a narrow specialty nationwide, with 237 enrolled providers across 41 states and an average of 522 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

9522 HUEBNER RD
SAN ANTONIO, TX 78240

Provider Details

NPI 1801991492
Specialty Undersea and Hyperbaric Medicine (Preventive Medicine) Physician
Credentials MD
Gender Male
NPI Issued 09/14/2006

License & disciplinary context — Texas TMB 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 ~77K Texas medical licensees in 2023 — they are NOT specific to ROBERT DUNN, MD. To verify ROBERT DUNN, MD's current license status, search the TMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

344
Total board actions, Texas 2023
Across 334 cases
4.47
Actions per 1,000 licensees
Texas statewide rate
probation
Most common action type
94 cases

TMB 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 Texas disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

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

12
Total Claims
$173
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
15
Total Day Supply
389
Brand Drug Cost
$0
Generic Drug Cost
$173

Patient Demographics

Average Patient Age
72.0 years
Avg HCC Risk Score
0.55

Undersea and Hyperbaric Medicine (Preventive Medicine) Physician Overview

How ROBERT DUNN, MD fits within the Undersea and Hyperbaric Medicine (Preventive Medicine) Physician landscape nationally.

237
Undersea and Hyperbaric Medicine (Preventive Medicine) Physician Providers in US
41
States with Undersea and Hyperbaric Medicine (Preventive Medicine) Physician
522
Avg Claims per Provider

ROBERT DUNN, MD's 12 claims are below the specialty average of 522.

Nearby Undersea and Hyperbaric Medicine (Preventive Medicine) Physician Providers in Texas

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

Compare Undersea and Hyperbaric Medicine (Preventive Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ROBERT DUNN, MD's specialty?
ROBERT DUNN, MD specializes in Undersea and Hyperbaric Medicine (Preventive Medicine) Physician and practices in SAN ANTONIO, Texas. Credentials: MD.
How much does ROBERT DUNN, MD prescribe under Medicare Part D?
In 2023, ROBERT DUNN, MD wrote 12 Medicare Part D claims totaling $173 in drug costs for N/A beneficiaries.
Where is ROBERT DUNN, MD located?
ROBERT DUNN, MD is located at 9522 HUEBNER RD, SAN ANTONIO, TX, 78240. Phone: (210) 478-5390.
What is ROBERT DUNN, MD's NPI number?
ROBERT DUNN, MD's National Provider Identifier (NPI) is 1801991492, issued on 09/14/2006.
How many Undersea and Hyperbaric Medicine (Preventive Medicine) Physician providers are there in the US?
There are 237 Undersea and Hyperbaric Medicine (Preventive Medicine) Physician providers across 41 states in the US. The average Undersea and Hyperbaric Medicine (Preventive Medicine) Physician provider writes 522 Medicare Part D claims per year.
Does ROBERT DUNN, MD accept Medicare?
ROBERT DUNN, MD appears in CMS Medicare data with 12 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ROBERT DUNN, MD's credentials?
ROBERT DUNN, MD's NPI is 1801991492 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