2026 NPPES data Internal Medicine Physician NPI 1326145079 D.O.
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MARITESS ARANAS, D.O.

Internal Medicine Physician in ANAHEIM, 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
661
Medicare Part D claims · 242 beneficiaries · Internal Medicine Physician avg: 3K
MIPS score
52.3148/100
▼ 31 pts below national avg 83.1 · [object Object]

What the federal data shows

MARITESS ARANAS, D.O. reported a CMS MIPS final score of 52.3148/100 — below the 83.1 national average — and filed 661 Medicare Part D claims in 2023.

52.3148/100
MIPS score · -31 vs avg
661
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.

MARITESS ARANAS, D.O.'s MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

52 4th percentile higher than 4% 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%). This entry sits in this band. 60–70: 13,906 scored providers (3%). Above this entry. 70–80: 118,074 scored providers (25%). Above this entry. 80–90: 129,887 scored providers (27%). Above this entry. 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)

MARITESS ARANAS, D.O. 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 MARITESS ARANAS, D.O.?

Below national average

NPI registry status

Active

Issued 09/17/2006

NPI 1326145079

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

661 76% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

MIPS final score

52.3148/100 30.785199999999996% pts

Mid-tier 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

MARITESS ARANAS, D.O.'s 2023 MIPS final score plotted against the Internal Medicine Physician national average

Below national average
MIPS Final Score
52.3148/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Internal Medicine Physician) — 52.3148/100 vs national avg 83.1

0%100%National avg83%52.3%
MIPS final score (Internal Medicine Physician) — 52.3148/100 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).

MARITESS ARANAS, D.O. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding D.O. credentials at 2040 S SANTA CRUZ ST STE 240, ANAHEIM, CA, 92805, with a listed phone of (714) 202-2330. NPI 1326145079 was issued on 09/17/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ARANAS 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 661 prescription claims written by this provider, covering 242 Medicare beneficiaries and totaling roughly $124K in drug spend, with an opioid prescribing rate of 5.0%. 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 52.3148/100 for the 2023 performance year (Quality 54.2105, Cost 41.6635), 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

2040 S SANTA CRUZ ST STE 240
ANAHEIM, CA 92805

Provider Details

NPI 1326145079
Specialty Internal Medicine Physician
Credentials D.O.
Gender Female
NPI Issued 09/17/2006

CMS Quality Score (MIPS)

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

52.3148
Final Score
Avg: 83.1
54.2105
Quality
41.6635
Cost

Reporting: Individual

Hospital and facility affiliations

Facilities where MARITESS ARANAS, D.O. 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.

SOUTHERN CALIFORNIA HOSPITALIST NETWORK MEDICAL GROUP INC
ORANGE, 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 MARITESS ARANAS, D.O.. To verify MARITESS ARANAS, D.O.'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.

661
Total Claims
$124K
Total Drug Cost
242
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,149
Total Day Supply
29,763
Generic Drug Cost
$14K
Opioid Claims
33 (5.0% rate)
Antibiotic Claims
100

Patient Demographics

Average Patient Age
76.3 years
Avg HCC Risk Score
2.97
Gender Split
55% female / 45% male
Age Distribution
<65: 20, 65-74: 84, 75-84: 79, 85+: 59

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What MARITESS ARANAS, D.O. 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
Eliquis
Apixaban
54
Carvedilol
37
Amlodipine Besylate
35
Furosemide
26
Jardiance
Empagliflozin
20
Pantoprazole Sodium
19
Clopidogrel
Clopidogrel Bisulfate
18
Cephalexin
17
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
16
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
15

* 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 MARITESS ARANAS, D.O. 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

MARITESS ARANAS, D.O.'s 661 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 ARANAS.

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

Frequently Asked Questions

What is MARITESS ARANAS, D.O.'s specialty?
MARITESS ARANAS, D.O. specializes in Internal Medicine Physician and practices in ANAHEIM, California. Credentials: D.O..
How much does MARITESS ARANAS, D.O. prescribe under Medicare Part D?
In 2023, MARITESS ARANAS, D.O. wrote 661 Medicare Part D claims totaling $124K in drug costs for 242 beneficiaries.
What is MARITESS ARANAS, D.O.'s Medicare quality score?
MARITESS ARANAS, D.O. has a CMS MIPS Final Score of 52.3148/100 (Quality: 54.2105, Cost: 41.6635). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is MARITESS ARANAS, D.O. located?
MARITESS ARANAS, D.O. is located at 2040 S SANTA CRUZ ST STE 240, ANAHEIM, CA, 92805. Phone: (714) 202-2330.
What is MARITESS ARANAS, D.O.'s NPI number?
MARITESS ARANAS, D.O.'s National Provider Identifier (NPI) is 1326145079, issued on 09/17/2006.
Does MARITESS ARANAS, D.O. prescribe opioids?
Yes, MARITESS ARANAS, D.O. had 33 opioid claims in 2023 with an opioid prescribing rate of 5.0%.
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 MARITESS ARANAS, D.O. prescribe most often?
Based on 2023 Medicare Part D data, MARITESS ARANAS, D.O.'s most frequently prescribed drugs include Eliquis, Carvedilol, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARITESS ARANAS, D.O. accept Medicare?
MARITESS ARANAS, D.O. appears in CMS Medicare data with 661 Part D claims and 242 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARITESS ARANAS, D.O.'s credentials?
MARITESS ARANAS, D.O.'s NPI is 1326145079 with credentials D.O.. 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