NPI registry status
Active
2026 NPPES data Anesthesiology Physician NPI 1215331426 M.D.
Verify on CMS → Charles Aguilar, M.D.
Anesthesiology Physician in Sacramento, 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 56,398 in Anesthesiology 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
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
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Charles Aguilar, M.D. filed 229 Medicare Part D claims in 2023 as a Anesthesiology Physician in Sacramento, California, prescribing 92% generic.
- 229
- Part D claims, 2023
- 92%
- 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.
Charles Aguilar, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
229 49th percentile higher than 49% of 1,370,886 prescribers
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)
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).
What does the federal data show about Charles Aguilar, M.D.?
Quality data not reportedPrimary specialty
Anesthesiology Physician
Medicare Part D claims
229 73% vs specialty avg
Specialty distribution in California
How Anesthesiology Physician compares to other specialties among California 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 Anesthesiology Physician. Verify directly:
How MIPS and board certification work
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. 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.
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%.
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
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%
Anesthesiology Physician average
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.
What Charles Aguilar, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Gabapentin
Gabapentin
45 claims
- Diclofenac Sodium
Diclofenac Sodium
27 claims
- Nabumetone
Nabumetone
26 claims
- Pregabalin
Pregabalin
25 claims
- Buprenorphine
Buprenorphine
22 claims
- Naproxen 17
Naproxen
17 claims
- Tizanidine Hcl 13
Tizanidine Hcl
13 claims
- Duloxetine Hcl 12
Duloxetine Hcl
12 claims
| 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.
Dr. Alison A'Court
MD
San Diego, CA
Dr. Peter Abaci
MD
Los Gatos, CA
Dr. Elma Abad-Pelsang
MD
Del Mar, CA
Dr. Rolando Abada
M.D.
San Diego, CA
Dr. Maher Abadir
MD
Turlock, CA
Compare Anesthesiology 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 Anesthesiology 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.
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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
View source datasets and methodology notes
- 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.