2026 NPPES data Anesthesiology Physician NPI 1215331426 M.D.
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CHARLES AGUILAR, M.D.

Anesthesiology Physician in SACRAMENTO, California. 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
229
Medicare Part D claims · 101 beneficiaries · Anesthesiology Physician avg: 860
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: CHARLES AGUILAR, M.D. is a Anesthesiology Physician ([object Object]) practicing in SACRAMENTO, California with a Medicare Part D prescribing footprint of 229 claims across 101 beneficiaries — 8% brand-name prescribing .

What stands out: CHARLES AGUILAR, M.D. filed 229 Medicare Part D claims in 2023 across SACRAMENTO, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

CHARLES AGUILAR, 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).

CHARLES AGUILAR, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 10/17/2014

NPI 1215331426

Primary specialty

Anesthesiology Physician

High-volume

56,398 US NPIs in this specialty

Medicare Part D claims

229 73% vs specialty avg

2023 prescription claims

Specialty avg: 860

Specialty distribution in California

How Anesthesiology Physician compares to other specialties among California providers

California providers

Anesthesiology Physician share within California

1. Anesthesiology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Anesthesiology Physician share within California

Specialty board-certification context

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

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

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

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

CHARLES AGUILAR, M.D. is a Anesthesiology Physician provider practicing in SACRAMENTO, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1215331426. 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.

CHARLES AGUILAR, M.D. appears in the CMS NPPES registry as a Anesthesiology Physician provider holding M.D. credentials at 6600 BRUCEVILLE RD, SACRAMENTO, CA, 95823, with a listed phone of (916) 688-6608. NPI 1215331426 was issued on 10/17/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AGUILAR 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 229 prescription claims written by this provider, covering 101 Medicare beneficiaries and totaling roughly $18K in drug spend, split 8% brand-name and 92% generic by claim count, with an opioid prescribing rate of 14.0%. 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.

Anesthesiology Physician is a high-volume specialty nationwide, with 56,398 enrolled providers across 56 states and an average of 860 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

6600 BRUCEVILLE RD
SACRAMENTO, CA 95823

Provider Details

NPI 1215331426
Specialty Anesthesiology Physician
Credentials M.D.
Gender Male
NPI Issued 10/17/2014

Hospital and facility affiliations

Facilities where CHARLES AGUILAR, 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.

PERMANENTE MEDICAL GROUP INC
STOCKTON, 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 CHARLES AGUILAR, M.D.. To verify CHARLES AGUILAR, 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

CHARLES AGUILAR, M.D. — brand share 8.0%
Specialty average (est.)

8% brand-name claims vs 92% generic, on 229 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.

229
Total Claims
$18K
Total Drug Cost
101
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
298
Total Day Supply
8,333
Brand vs Generic
8% brand / 92% generic
Brand Drug Cost
$11K
Generic Drug Cost
$7K
Opioid Claims
32 (14.0% rate)

Patient Demographics

Average Patient Age
70.2 years
Avg HCC Risk Score
1.26
Gender Split
63% female / 37% 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
Gabapentin
45
Diclofenac Sodium
27
Nabumetone
26
Pregabalin
25
Buprenorphine
22
Naproxen
17
Tizanidine Hcl
13
Duloxetine Hcl
12
Buprenorphine-Naloxone
Buprenorphine Hcl/Naloxone Hcl
11

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

Anesthesiology Physician Overview

How CHARLES AGUILAR, M.D. fits within the Anesthesiology Physician landscape nationally.

56,398
Anesthesiology Physician Providers in US
56
States with Anesthesiology Physician
860
Avg Claims per Provider

CHARLES AGUILAR, M.D.'s 229 claims are below the specialty average of 860.

Nearby Anesthesiology Physician Providers in California

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

Compare Anesthesiology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is CHARLES AGUILAR, M.D.'s specialty?
CHARLES AGUILAR, M.D. specializes in Anesthesiology Physician and practices in SACRAMENTO, California. Credentials: M.D..
How much does CHARLES AGUILAR, M.D. prescribe under Medicare Part D?
In 2023, CHARLES AGUILAR, M.D. wrote 229 Medicare Part D claims totaling $18K in drug costs for 101 beneficiaries.
Where is CHARLES AGUILAR, M.D. located?
CHARLES AGUILAR, M.D. is located at 6600 BRUCEVILLE RD, SACRAMENTO, CA, 95823. Phone: (916) 688-6608.
What is CHARLES AGUILAR, M.D.'s NPI number?
CHARLES AGUILAR, M.D.'s National Provider Identifier (NPI) is 1215331426, issued on 10/17/2014.
Does CHARLES AGUILAR, M.D. prescribe more brand-name or generic drugs?
CHARLES AGUILAR, M.D.'s prescribing is 8% brand-name and 92% generic drugs by claim count, with $11K in brand drug costs.
Does CHARLES AGUILAR, M.D. prescribe opioids?
Yes, CHARLES AGUILAR, M.D. had 32 opioid claims in 2023 with an opioid prescribing rate of 14.0%.
How many Anesthesiology Physician providers are there in the US?
There are 56,398 Anesthesiology Physician providers across 56 states in the US. The average Anesthesiology Physician provider writes 860 Medicare Part D claims per year.
What drugs does CHARLES AGUILAR, M.D. prescribe most often?
Based on 2023 Medicare Part D data, CHARLES AGUILAR, M.D.'s most frequently prescribed drugs include Gabapentin, Diclofenac Sodium, Nabumetone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CHARLES AGUILAR, M.D. accept Medicare?
CHARLES AGUILAR, M.D. appears in CMS Medicare data with 229 Part D claims and 101 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CHARLES AGUILAR, M.D.'s credentials?
CHARLES AGUILAR, M.D.'s NPI is 1215331426 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