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 36,778 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
99
Medicare Part D claims · 39 beneficiaries · Surgery Physician avg: 174
Generic prescribing
80%
generic claims · 20% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
100/100
▲ 17 pts above national avg 83.5 · Exceptional
Industry payments
$13.74
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Miriam Abaunza, M.D. reported a CMS MIPS final score of 100/100 - above the 83.5 national average - and filed 99 Medicare Part D claims in 2024.
- 100/100
- MIPS score · +17 vs avg
- 99
- Part D claims, 2024
- 80%
- 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.
Federal trust snapshot
What official records show about Miriam Abaunza, M.D.
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1538470778), first enumerated 06/22/2010.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 99 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 100/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$13.74 in reported industry payments (1 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Miriam Abaunza, M.D.'s individual license status. Verify directly with the state medical board.
Source: MBC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1538470778 · Surgery Physician
NPI-10 · ENUM-MID · TAX-MID · MIPS-ELITE · RX-TRACE · BOOK-LIGHT · PHOTO-FINISH
- NPI-10 1538470778
- ENUM-MID 2010
- TAX-MID 37K Surgery Physician
- MIPS-ELITE 100/100
- RX-TRACE 99
- BOOK-LIGHT 3,381 in California
- PHOTO-FINISH Carlos Alejo · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Abaunza · this p…
Abaunza · this provider
100 MIPS pts
- Joshua Bauernfei…
Joshua Bauernfeind
100 MIPS pts
- Carlos Alejo · n…
Carlos Alejo
100 MIPS pts
- Thomas Alosco · …
Thomas Alosco
100 MIPS pts
- Heidi Bahna · near
Heidi Bahna
100 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Miriam Abaunza, M.D.'s MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
100 ≥ 92nd percentile 92% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Miriam Abaunza, M.D. sits
This provider among surgery physician peers
Across the 7,271 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 53% of them and scores higher on MIPS quality than 92% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
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
99 43% vs specialty avg
MIPS final score
100/100 16.5 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 83.5 national avg · 2023 performance year
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).
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
Measured-score avg: 83.5
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.
Brand vs generic prescribing mix · Typical
Miriam Abaunza, M.D. - brand share 20.0%
Surgery Physician average
20% brand-name claims vs 80% generic, on 99 2024 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 2024.
99
Total Claims
$7K
Total Drug Cost
39
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 102.8
- Total Day Supply
- 2,314
- Brand vs Generic
- 20% brand / 80% generic
- Brand Drug Cost
- $6K
- Generic Drug Cost
- $1K
- Antibiotic Claims
- 42
Patient Demographics
- Average Patient Age
- 72.7 years
- Avg HCC Risk Score
- 4.04
- Gender Split
- 41% female / 59% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Doxycycline Hyclate | 23 |
| 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.
36,778
Surgery Physician Providers in US
56
States with Surgery Physician
174
Avg Claims per Provider
Miriam Abaunza, M.D.'s 99 claims are below the specialty average of 174.
Nationwide Surgery Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Abaunza, both outside California so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (100 here).
Same NPPES enumeration year (2010)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
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.
One of 3,381 Surgery Physician providers enrolled in California, 5 are shown here.
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
Fresno, CA
Compare Surgery Physician nationally: see state-by-state distribution →
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 2024, Miriam Abaunza, M.D. wrote 99 Medicare Part D claims totaling $7K in drug costs for 39 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 average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. 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.
Does Miriam Abaunza, M.D. prescribe more brand-name or generic drugs? ▼
Miriam Abaunza, M.D.'s prescribing is 20% brand-name and 80% generic drugs by claim count, with $6K in brand drug costs.
How many Surgery Physician providers are there in the US? ▼
There are 36,778 Surgery Physician providers across 56 states in the US. The average Surgery Physician provider writes 174 Medicare Part D claims per year.
What drugs does Miriam Abaunza, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Miriam Abaunza, M.D.'s most frequently prescribed drugs include Doxycycline Hyclate, Gentamicin Sulfate. 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 99 Part D claims and 39 Medicare beneficiaries in 2024. 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 (2024). 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.