NPI registry status
Active
2026 NPPES data Surgery Physician NPI 1538470778 M.D.
Verify on CMS → Miriam Abaunza, M.D.
Surgery Physician in Los Angeles, 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 36,191 in Surgery 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
143
Medicare Part D claims · 58 beneficiaries · Surgery Physician avg: 169
MIPS score
100/100
▲ 17 pts above national avg 83.1 · Exceptional
Industry payments
$13.74
1 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Miriam Abaunza, M.D. reported a CMS MIPS final score of 100/100 - above the 83.1 national average - and filed 143 Medicare Part D claims in 2023.
- 100/100
- MIPS score · +17 vs avg
- 143
- Part D claims, 2023
- 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.
Miriam Abaunza, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
100 Top 7% higher than 93% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Miriam Abaunza, M.D. sits
This provider among surgery physician peers
Across the 7,525 surgery physician providers who report both Medicare Part D prescribing and a MIPS quality score, Miriam Abaunza, M.D. writes more Part D claims than 66% of them and scores higher on MIPS quality than 93% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one surgery physician peer from a representative sample of 60; the gold marker is Miriam Abaunza, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Miriam Abaunza, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 Miriam Abaunza, M.D.?
High performer (top quartile)Primary specialty
Surgery Physician
Medicare Part D claims
143 15% vs specialty avg
MIPS final score
100/100 16.9 pts vs avg
Specialty distribution in California
How Surgery Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Miriam Abaunza, M.D.'s 2023 MIPS final score plotted against the Surgery Physician national average
- MIPS Final Score
- 100/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Surgery Physician) - 100/100 vs national avg 83.1
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).
Miriam Abaunza, M.D. appears in the CMS NPPES registry as a Surgery Physician provider holding M.D. credentials at 12021 WILSHIRE BLVD # 745, Los Angeles, CA, 90025, with a listed phone of (909) 267-5900. NPI 1538470778 was issued on 06/22/2010.
Medicare Part D records for calendar year 2023 show 143 prescription claims written by this provider, covering 58 Medicare beneficiaries and totaling roughly $34K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 100/100 for the 2023 performance year, compared with the national average of 83.1.
Surgery Physician is a mid-sized specialty nationwide, with 36,191 enrolled providers across 56 states and an average of 169 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 | 1538470778 |
|---|---|
| Specialty | Surgery Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 06/22/2010 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
100
Final Score
Avg: 83.1
96
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Miriam Abaunza, 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.
Skilled Facility Health Care Solutions Inc
Pomona, 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).
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 Miriam Abaunza, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$14
Largest payer
Smith+Nephew, Inc.
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 - 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 Miriam Abaunza, M.D.. To verify Miriam Abaunza, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
143
Total Claims
$34K
Total Drug Cost
58
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 152
- Total Day Supply
- 3,260
- Generic Drug Cost
- $3K
- Antibiotic Claims
- 49
Patient Demographics
- Average Patient Age
- 76.9 years
- Avg HCC Risk Score
- 3.52
- Gender Split
- 45% female / 55% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Miriam Abaunza, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Santyl
Santyl
27 claims
- Doxycycline Hyclate
Doxycycline Hyclate
24 claims
- Ciprofloxacin Hcl
Ciprofloxacin Hcl
12 claims
- Gentamicin Sulfate
Gentamicin Sulfate
11 claims
| Drug | Claims |
|---|---|
| Santyl Collagenase Clostridium Hist. | 27 |
| Doxycycline Hyclate | 24 |
| Ciprofloxacin Hcl | 12 |
| Gentamicin Sulfate | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Surgery Physician Overview
How Miriam Abaunza, M.D. fits within the Surgery Physician landscape nationally.
36,191
Surgery Physician Providers in US
56
States with Surgery Physician
169
Avg Claims per Provider
Miriam Abaunza, M.D.'s 143 claims are below the specialty average of 169.
Nearby Surgery Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Abaunza.
Dr. Oliver Aalami
M.D.
Stanford, CA
Dr. Shahram Aarabi
MD
Oakland, CA
Dr. Benjamin Abbadessa
M.D.
San Diego, CA
Abdul-Rahman Abdel-Reheem
Los Angeles, CA
Dr. Sandy Abdelkedous
MD
Lancaster, CA
Compare Surgery 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 Surgery 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 Miriam Abaunza, M.D.'s specialty? ▼
Miriam Abaunza, M.D. specializes in Surgery Physician and practices in Los Angeles, California. Credentials: M.D..
How much does Miriam Abaunza, M.D. prescribe under Medicare Part D? ▼
In 2023, Miriam Abaunza, M.D. wrote 143 Medicare Part D claims totaling $34K in drug costs for 58 beneficiaries.
What is Miriam Abaunza, M.D.'s Medicare quality score? ▼
Miriam Abaunza, M.D. has a CMS MIPS Final Score of 100/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Miriam Abaunza, M.D. located? ▼
Miriam Abaunza, M.D. is located at 12021 WILSHIRE BLVD # 745, Los Angeles, CA, 90025. Phone: (909) 267-5900.
What is Miriam Abaunza, M.D.'s NPI number? ▼
Miriam Abaunza, M.D.'s National Provider Identifier (NPI) is 1538470778, issued on 06/22/2010.
How many Surgery Physician providers are there in the US? ▼
There are 36,191 Surgery Physician providers across 56 states in the US. The average Surgery Physician provider writes 169 Medicare Part D claims per year.
What drugs does Miriam Abaunza, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Miriam Abaunza, M.D.'s most frequently prescribed drugs include Santyl, Doxycycline Hyclate, Ciprofloxacin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Miriam Abaunza, M.D. accept Medicare? ▼
Miriam Abaunza, M.D. appears in CMS Medicare data with 143 Part D claims and 58 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Miriam Abaunza, M.D.'s credentials? ▼
Miriam Abaunza, M.D.'s NPI is 1538470778 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.