NPI registry status
Active
2026 NPPES data Hospice and Palliative Medicine (Internal Medicine) Physician NPI 1386130151 MD
Verify on CMS → Carlos Perez Ruiz, MD
Hospice and Palliative Medicine (Internal Medicine) Physician in San Antonio, Texas.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,524 in Hospice and Palliative Medicine (Internal 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
200
Medicare Part D claims · 77 beneficiaries · Hospice and Palliative Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$599.41
6 payments · CMS Open Payments (Sunshine Act)
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
Carlos Perez Ruiz, MD filed 200 Medicare Part D claims in 2023 as a Hospice and Palliative Medicine (Internal Medicine) Physician in San Antonio, Texas, prescribing 93% generic.
- 200
- Part D claims, 2023
- 93%
- generic prescribing
- $599.41
- industry payments (Sunshine Act)
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.
Carlos Perez Ruiz, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
200 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-eligible specialty (heuristic, not verified)
Carlos Perez Ruiz, 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 Carlos Perez Ruiz, MD?
Quality data not reportedPrimary specialty
Hospice and Palliative Medicine (Internal Medicine) Physician
Medicare Part D claims
200 84% vs specialty avg
Specialty distribution in Texas
How Hospice and Palliative Medicine (Internal Medicine) Physician compares to other specialties among Texas 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 Hospice and Palliative Medicine (Internal Medicine) 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).
Carlos Perez Ruiz, MD appears in the CMS NPPES registry as a Hospice and Palliative Medicine (Internal Medicine) Physician provider holding MD credentials at 933 PLEASANTON RD STE 109, San Antonio, TX, 78214, with a listed phone of (210) 395-3395. NPI 1386130151 was issued on 07/05/2018.
Medicare Part D records for calendar year 2023 show 200 prescription claims written by this provider, covering 77 Medicare beneficiaries and totaling roughly $12K in drug spend, split 7% brand-name and 93% generic by claim count, with an opioid prescribing rate of 20.5%.
Hospice and Palliative Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 1,524 enrolled providers across 51 states and an average of 1,275 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 | 1386130151 |
|---|---|
| Specialty | Hospice and Palliative Medicine (Internal Medicine) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/05/2018 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Carlos Perez Ruiz, MD. Source: openpaymentsdata.cms.gov.
Total received
$599
Largest payer
Lilly USA, LLC
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
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 Carlos Perez Ruiz, MD. To verify Carlos Perez Ruiz, 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.
Brand vs generic prescribing mix · Generic-heavy
Carlos Perez Ruiz, MD - brand share 7.0%
Hospice and Palliative Medicine (Internal Medicine) Physician average
7% brand-name claims vs 93% generic, on 200 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.
200
Total Claims
$12K
Total Drug Cost
77
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 352
- Total Day Supply
- 9,949
- Brand vs Generic
- 7% brand / 93% generic
- Brand Drug Cost
- $7K
- Generic Drug Cost
- $5K
- Opioid Claims
- 41 (20.5% rate)
Patient Demographics
- Average Patient Age
- 77.2 years
- Avg HCC Risk Score
- 4.64
- Gender Split
- 58% female / 42% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Carlos Perez Ruiz, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Escitalopram Oxalate
Escitalopram Oxalate
36 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
22 claims
- Mirtazapine
Mirtazapine
16 claims
| Drug | Claims |
|---|---|
| Escitalopram Oxalate | 36 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 22 |
| Mirtazapine | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Hospice and Palliative Medicine (Internal Medicine) Physician in TX →
All providers in Texas →
Compare specialties →
Hospice and Palliative Medicine (Internal Medicine) Physician Overview
How Carlos Perez Ruiz, MD fits within the Hospice and Palliative Medicine (Internal Medicine) Physician landscape nationally.
1,524
Hospice and Palliative Medicine (Internal Medicine) Physician Providers in US
51
States with Hospice and Palliative Medicine (Internal Medicine) Physician
1,275
Avg Claims per Provider
Carlos Perez Ruiz, MD's 200 claims are below the specialty average of 1,275.
Nearby Hospice and Palliative Medicine (Internal Medicine) Physician Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Perez Ruiz.
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 Texas medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Hospice and Palliative Medicine (Internal 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.
Healthcare Guides
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How to Find a Doctor
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Texas
Frequently Asked Questions
What is Carlos Perez Ruiz, MD's specialty? ▼
Carlos Perez Ruiz, MD specializes in Hospice and Palliative Medicine (Internal Medicine) Physician and practices in San Antonio, Texas. Credentials: MD.
How much does Carlos Perez Ruiz, MD prescribe under Medicare Part D? ▼
In 2023, Carlos Perez Ruiz, MD wrote 200 Medicare Part D claims totaling $12K in drug costs for 77 beneficiaries.
Where is Carlos Perez Ruiz, MD located? ▼
Carlos Perez Ruiz, MD is located at 933 PLEASANTON RD STE 109, San Antonio, TX, 78214. Phone: (210) 395-3395.
What is Carlos Perez Ruiz, MD's NPI number? ▼
Carlos Perez Ruiz, MD's National Provider Identifier (NPI) is 1386130151, issued on 07/05/2018.
Does Carlos Perez Ruiz, MD prescribe more brand-name or generic drugs? ▼
Carlos Perez Ruiz, MD's prescribing is 7% brand-name and 93% generic drugs by claim count, with $7K in brand drug costs.
Does Carlos Perez Ruiz, MD prescribe opioids? ▼
Yes, Carlos Perez Ruiz, MD had 41 opioid claims in 2023 with an opioid prescribing rate of 20.5%.
How many Hospice and Palliative Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 1,524 Hospice and Palliative Medicine (Internal Medicine) Physician providers across 51 states in the US. The average Hospice and Palliative Medicine (Internal Medicine) Physician provider writes 1,275 Medicare Part D claims per year.
What drugs does Carlos Perez Ruiz, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Carlos Perez Ruiz, MD's most frequently prescribed drugs include Escitalopram Oxalate, Hydrocodone-Acetaminophen, Mirtazapine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Carlos Perez Ruiz, MD accept Medicare? ▼
Carlos Perez Ruiz, MD appears in CMS Medicare data with 200 Part D claims and 77 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Carlos Perez Ruiz, MD's credentials? ▼
Carlos Perez Ruiz, MD's NPI is 1386130151 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
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.