2026 NPPES data Addiction Psychiatry Physician NPI 1306836671 M.D.
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GARY DROUILLARD, M.D.

Addiction Psychiatry 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
587
Medicare Part D claims · 107 beneficiaries · Addiction Psychiatry Physician avg: 792
What the federal data reveals: GARY DROUILLARD, M.D. is a Addiction Psychiatry Physician ([object Object]) practicing in SAN ANTONIO, Texas with a Medicare Part D prescribing footprint of 587 claims across 107 beneficiaries .

What stands out: GARY DROUILLARD, M.D. filed 587 Medicare Part D claims in 2023 across SAN ANTONIO, Texas. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

GARY DROUILLARD, 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).

GARY DROUILLARD, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 10/26/2005

NPI 1306836671

Primary specialty

Addiction Psychiatry Physician

Niche

667 US NPIs in this specialty

Medicare Part D claims

587 26% vs specialty avg

2023 prescription claims

Specialty avg: 792

Specialty distribution in Texas

How Addiction Psychiatry Physician compares to other specialties among Texas providers

Texas providers

Addiction Psychiatry Physician share within Texas

1. Addiction Psychiatry Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Addiction Psychiatry Physician share within Texas

Specialty board-certification context

Estimated specialty board-certified rate — Addiction Psychiatry Physician (ABMS / AOA reference)

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

Est. board-certified rate (Addiction Psychiatry Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Addiction Psychiatry 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).

GARY DROUILLARD, M.D. is a Addiction Psychiatry Physician provider practicing in SAN ANTONIO, Texas, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1306836671. 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.

GARY DROUILLARD, M.D. appears in the CMS NPPES registry as a Addiction Psychiatry Physician provider holding M.D. credentials at 8550 HUEBNER RD, SAN ANTONIO, TX, 78240, with a listed phone of (210) 541-5300. NPI 1306836671 was issued on 10/26/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DROUILLARD 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 587 prescription claims written by this provider, covering 107 Medicare beneficiaries and totaling roughly $42K 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.

Addiction Psychiatry Physician is a narrow specialty nationwide, with 667 enrolled providers across 49 states and an average of 792 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

8550 HUEBNER RD
SAN ANTONIO, TX 78240

Provider Details

NPI 1306836671
Specialty Addiction Psychiatry Physician
Credentials M.D.
Gender Male
NPI Issued 10/26/2005

Hospital and facility affiliations

Facilities where GARY DROUILLARD, 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.

SOUTHWEST PSYCHIATRIC SERVICES
SAN ANTONIO, TX

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 — 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 GARY DROUILLARD, M.D.. To verify GARY DROUILLARD, M.D.'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.

587
Total Claims
$42K
Total Drug Cost
107
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
594
Total Day Supply
10,271
Generic Drug Cost
$9K
Antibiotic Claims
16

Patient Demographics

Average Patient Age
51.0 years
Avg HCC Risk Score
2.12
Gender Split
36% female / 64% male
Age Distribution
<65: 87, 65-74: 19, 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.

Drug Claims
Quetiapine Fumarate
43
Gabapentin
33
Trazodone Hcl
30
Buprenorphine-Naloxone
Buprenorphine Hcl/Naloxone Hcl
28
Atorvastatin Calcium
21
Zolpidem Tartrate
21
Escitalopram Oxalate
18
Albuterol Sulfate Hfa
Albuterol Sulfate
17
Aripiprazole
16
Lisinopril
16

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

Addiction Psychiatry Physician Overview

How GARY DROUILLARD, M.D. fits within the Addiction Psychiatry Physician landscape nationally.

667
Addiction Psychiatry Physician Providers in US
49
States with Addiction Psychiatry Physician
792
Avg Claims per Provider

GARY DROUILLARD, M.D.'s 587 claims are below the specialty average of 792.

Nearby Addiction Psychiatry Physician Providers in Texas

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

Compare Addiction Psychiatry Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is GARY DROUILLARD, M.D.'s specialty?
GARY DROUILLARD, M.D. specializes in Addiction Psychiatry Physician and practices in SAN ANTONIO, Texas. Credentials: M.D..
How much does GARY DROUILLARD, M.D. prescribe under Medicare Part D?
In 2023, GARY DROUILLARD, M.D. wrote 587 Medicare Part D claims totaling $42K in drug costs for 107 beneficiaries.
Where is GARY DROUILLARD, M.D. located?
GARY DROUILLARD, M.D. is located at 8550 HUEBNER RD, SAN ANTONIO, TX, 78240. Phone: (210) 541-5300.
What is GARY DROUILLARD, M.D.'s NPI number?
GARY DROUILLARD, M.D.'s National Provider Identifier (NPI) is 1306836671, issued on 10/26/2005.
How many Addiction Psychiatry Physician providers are there in the US?
There are 667 Addiction Psychiatry Physician providers across 49 states in the US. The average Addiction Psychiatry Physician provider writes 792 Medicare Part D claims per year.
What drugs does GARY DROUILLARD, M.D. prescribe most often?
Based on 2023 Medicare Part D data, GARY DROUILLARD, M.D.'s most frequently prescribed drugs include Quetiapine Fumarate, Gabapentin, Trazodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GARY DROUILLARD, M.D. accept Medicare?
GARY DROUILLARD, M.D. appears in CMS Medicare data with 587 Part D claims and 107 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GARY DROUILLARD, M.D.'s credentials?
GARY DROUILLARD, M.D.'s NPI is 1306836671 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