2026 NPPES data Internal Medicine Physician NPI 1093971459 M.D.
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OSCAR ESTRADA PAZ, M.D.

Internal Medicine Physician in SANTA MONICA, 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
583
Medicare Part D claims · 96 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
29%
generic claims · 71% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
86.1025/100
▲ 3 pts above national avg 83.1 · [object Object]

What the federal data shows

OSCAR ESTRADA PAZ, M.D. reported a CMS MIPS final score of 86.1025/100 — above the 83.1 national average — and filed 583 Medicare Part D claims in 2023.

86.1025/100
MIPS score · +3 vs avg
583
Part D claims, 2023
29%
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.

OSCAR ESTRADA PAZ, 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

86 Top 48% higher than 52% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). This entry sits in this band. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

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

Board certification likely (heuristic — not verified)

OSCAR ESTRADA PAZ, 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 OSCAR ESTRADA PAZ, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 08/04/2008

NPI 1093971459

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

583 79% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

MIPS final score

86.1025/100 3.002500000000012% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in California

How Internal Medicine Physician compares to other specialties among California providers

California providers

Internal Medicine Physician share within California

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

Medicare quality performance — MIPS

OSCAR ESTRADA PAZ, M.D.'s 2023 MIPS final score plotted against the Internal Medicine Physician national average

High performer (top quartile)
MIPS Final Score
86.1025/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Internal Medicine Physician) — 86.1025/100 vs national avg 83.1

0%100%National avg83%86.1%
MIPS final score (Internal Medicine Physician) — 86.1025/100 vs national avg 83.1

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).

OSCAR ESTRADA PAZ, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 1260 15TH ST STE 600, SANTA MONICA, CA, 90404, with a listed phone of (310) 449-0939. NPI 1093971459 was issued on 08/04/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ESTRADA PAZ 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 583 prescription claims written by this provider, covering 96 Medicare beneficiaries and totaling roughly $184K in drug spend, split 71% brand-name and 29% generic by claim count. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 86.1025/100 for the 2023 performance year (Quality 82.938, Cost 66.7384), compared with the national average of 83.1.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

1260 15TH ST STE 600
SANTA MONICA, CA 90404

Provider Details

NPI 1093971459
Specialty Internal Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 08/04/2008

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

86.1025
Final Score
Avg: 83.1
82.938
Quality
66.7384
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where OSCAR ESTRADA PAZ, 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.

THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
SANTA MONICA, 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 OSCAR ESTRADA PAZ, M.D.. To verify OSCAR ESTRADA PAZ, 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 · Brand-heavy

OSCAR ESTRADA PAZ, M.D. — brand share 71.0%
Specialty average (est.)

71% brand-name claims vs 29% generic, on 583 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.

583
Total Claims
$184K
Total Drug Cost
96
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
785
Total Day Supply
22,609
Brand vs Generic
71% brand / 29% generic
Brand Drug Cost
$167K
Generic Drug Cost
$16K

Patient Demographics

Average Patient Age
76.2 years
Avg HCC Risk Score
2.13
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 OSCAR ESTRADA PAZ, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Albuterol Sulfate Hfa
Albuterol Sulfate
94
Breo Ellipta
Fluticasone/Vilanterol
42
Spiriva Handihaler
Tiotropium Bromide
33
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
32
Arnuity Ellipta
Fluticasone Furoate
28
Fluticasone Propionate
27
Ventolin Hfa
Albuterol Sulfate
27
Prednisone
25
Incruse Ellipta
Umeclidinium Bromide
23
Azelastine Hcl
20

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

Internal Medicine Physician Overview

How OSCAR ESTRADA PAZ, M.D. fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

OSCAR ESTRADA PAZ, M.D.'s 583 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in California

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

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is OSCAR ESTRADA PAZ, M.D.'s specialty?
OSCAR ESTRADA PAZ, M.D. specializes in Internal Medicine Physician and practices in SANTA MONICA, California. Credentials: M.D..
How much does OSCAR ESTRADA PAZ, M.D. prescribe under Medicare Part D?
In 2023, OSCAR ESTRADA PAZ, M.D. wrote 583 Medicare Part D claims totaling $184K in drug costs for 96 beneficiaries.
What is OSCAR ESTRADA PAZ, M.D.'s Medicare quality score?
OSCAR ESTRADA PAZ, M.D. has a CMS MIPS Final Score of 86.1025/100 (Quality: 82.938, Cost: 66.7384). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is OSCAR ESTRADA PAZ, M.D. located?
OSCAR ESTRADA PAZ, M.D. is located at 1260 15TH ST STE 600, SANTA MONICA, CA, 90404. Phone: (310) 449-0939.
What is OSCAR ESTRADA PAZ, M.D.'s NPI number?
OSCAR ESTRADA PAZ, M.D.'s National Provider Identifier (NPI) is 1093971459, issued on 08/04/2008.
Does OSCAR ESTRADA PAZ, M.D. prescribe more brand-name or generic drugs?
OSCAR ESTRADA PAZ, M.D.'s prescribing is 71% brand-name and 29% generic drugs by claim count, with $167K in brand drug costs.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does OSCAR ESTRADA PAZ, M.D. prescribe most often?
Based on 2023 Medicare Part D data, OSCAR ESTRADA PAZ, M.D.'s most frequently prescribed drugs include Albuterol Sulfate Hfa, Breo Ellipta, Spiriva Handihaler. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does OSCAR ESTRADA PAZ, M.D. accept Medicare?
OSCAR ESTRADA PAZ, M.D. appears in CMS Medicare data with 583 Part D claims and 96 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify OSCAR ESTRADA PAZ, M.D.'s credentials?
OSCAR ESTRADA PAZ, M.D.'s NPI is 1093971459 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.
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