Dr. Maritess T. Aranas, DO

  • Pasadena, CA
  • Internist
NPI1326145079PAC ID1355423740
Medicare services, 2024
2,099
Medicare patients, 2024
566
Part D claims, 2024
608
MIPS score, 2024
42
Hospital affiliations
2
Practice address
100 W. California Blvd, Pasadena, CA 91105
Practice phone
Call (626) 397-2618
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Huntington Hospital - Unit

Acute Care Hospital-Unit · Pasadena, California

See all 6 affiliations

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Dr. Maritess T. Aranas is an internist in Pasadena, California

Dr. Aranas practices at Huntington Hospital - Unit in Pasadena, California.

Dr. Aranas' NPI, 1326145079, was assigned on September 17, 2006. Dr. Aranas graduated from WesternU College of Osteopathic Medicine of the Pacific in 2002. Dr. Aranas holds California license 20A8507.

NPI and contact details
Medicare PAC ID
1355423740
NPI enumeration date
September 17, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(626) 397-2618
Professional email
Get email
Personal email
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Mobile number
Get number
Sex
Female
Estimated age
50
Medical school graduation
2002

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Maritess T. Aranas practices at Huntington Hospital - Unit in Pasadena, California

Dr. Aranas' primary practice is Huntington Hospital - Unit, at 100 W. California Blvd, Pasadena, CA 91105 in Los Angeles County. The practice phone is (626) 397-2618.

  • Huntington Hospital - Unit
    100 W. California Blvd, Pasadena, CA 91105 · Los Angeles CountyPhone(626) 397-2618

Source: Dmand AI Affiliation Data

Dr. Maritess T. Aranas is affiliated with 5 sites of care and 1 medical group

Dr. Aranas' primary practice is Huntington Hospital - Unit in Pasadena, California. Dr. Aranas is also affiliated with Huntington Hospital. The medical group on file is Southern California Hospitalist Network. Dmand AI also links Dr. Aranas to 1 more group practice or clinic, 1 home health agency and 1 skilled nursing facility, each named with a free account.

See all 6 affiliations for Dr. Aranas

Source: Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Maritess T. Aranas' practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Aranas practices, 5 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Huntington Hospital - UnitAvailable with a free account
+4 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Maritess T. Aranas is one of 16,751 internists in California

Internal medicine is Dr. Aranas' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Aranas is board certified in internal medicine by the American Board of Internal Medicine. Dr. Aranas is licensed in California.

Specialties and state licenses

  • Internal medicine, CaliforniaPrimaryLicense 20A8507 · 2003 to 2026 · taxonomy 207R00000X

Clinical focus

Dmand AI lists acute respiratory failure, anemia, cardiac arrhythmia, cellulitis, chest pain, circulatory problems in extremities, cirrhosis and congestive heart failure among the conditions Dr. Aranas treats.

Internists near Dr. Aranas

Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Maritess T. Aranas billed Medicare for 2,099 services in 2024

CMS data shows 2,099 Medicare services from Dr. Aranas across 6 procedure codes in 2024, for 566 Medicare patients. Medicare paid $199,938 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 20242,099
Medicare patients566
Paid by Medicare$199,938
Procedure codes6

Dr. Aranas' Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 2,5762024: 2,09919%

Dr. Aranas compared with the California median for internists, 2024

  • Dr. Aranas
  • California median
Medicare services
2,099vs 3615.8 times
Medicare patients
566vs 1513.7 times
Part D claims
298vs 42129% below

Medians across 15,815 internists in California with Dmand AI profiles that report each measure.

Dr. Aranas' most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Aranas

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Maritess T. Aranas treated 566 Medicare patients in 2024, average age 76

CMS counts 566 Medicare patients who saw Dr. Aranas in 2024. The largest group is 75 to 84, with 206 patients. 75% of them have arthritis, and 75% have high blood pressure. 54% are also on Medicaid. Their average risk score is 2.98, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Aranas' median patient age at 70, with 52% women.

Medicare patients, 2024566
Average age76
Average risk score2.98
Also on Medicaid54%

Dr. Aranas' Medicare patients by age, 2024

Dr. Aranas' Medicare patients by sex, 2024

  • Women29352%
  • Men27348%

Chronic conditions among Dr. Aranas' Medicare patients, 2024

  1. Arthritis75%
  2. High blood pressure75%
  3. High cholesterol75%
  4. Diabetes58%
  5. Ischemic heart disease58%
  6. Chronic kidney disease51%
  7. Heart failure50%
  8. Mood disorders46%

Share of Medicare patients with each condition. A patient can have several.

Dr. Aranas' patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 70

Patient panel by sex, all payers

  • Women52%
  • Men47%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Maritess T. Aranas wrote 608 Medicare Part D claims in 2024

In 2024, Dr. Aranas wrote 608 Medicare Part D claims for 218 patients. 85% of them were for generic drugs. CMS names the drug for 298 of them, across 13 drugs with 11 or more claims each, at $43,378 in total drug cost. In 2023, CMS named 346 claims across 17 drugs.

Part D claims, 2024608
Drugs named by CMS13
Total drug cost$43,378
Part D patients218

Dr. Aranas' Part D claims by kind of drug, 2024

  • Generic516 claims85%
  • Brand-name and other92 claims15%

Dr. Aranas' most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Aranas' Part D claims, 2024

  • Opioids4%27 of 608 claims
  • Antibiotics14%83 of 608 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 3462024: 29814%

Drugs named by CMS: 13 in 2024, 17 in 2023.

See all prescribing by Dr. Aranas

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Maritess T. Aranas scored 42 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 42 out of 100 for Dr. Aranas for performance year 2024, reported individually. Dr. Aranas accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Aranas' MIPS scores, performance year 2024

  • 42of 100Final score
  • 30of 100Quality
  • 0of 100Improvement Activities
  • 53of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Dr. Maritess T. Aranas received $272 in industry payments from 2016 to 2023

CMS Open Payments shows 5 general payments to Dr. Aranas from 3 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Abbott Laboratories paid the most, $209.

General payments to Dr. Aranas by program year, 2016 to 2023

Companies that paid Dr. Aranas the most, 2016 to 2023

Share is of all general payments to this clinician.

See all payments to Dr. Aranas

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Maritess T. Aranas graduated from WesternU College of Osteopathic Medicine of the Pacific

Dr. Aranas graduated from WesternU College of Osteopathic Medicine of the Pacific in 2002.

  1. Medical schoolWesternU College of Osteopathic Medicine of the Pacific
  2. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Maritess T. Aranas accepts plans from 2 insurance carriers

Dr. Aranas is in network with 2 carriers, including CMS Medicare and Molina. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.

  • CMS Medicare
  • Molina

Source: Dmand AI Insurance Network Data

Sources for Dr. Maritess T. Aranas's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Maritess T. Aranas

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Maritess T. Aranas' NPI number?

Dr. Maritess T. Aranas' NPI number is 1326145079. It was assigned on September 17, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Maritess T. Aranas?

Dr. Maritess T. Aranas is an internist in Pasadena, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Dr. Maritess T. Aranas practice?

Dr. Aranas practices at 100 W. California Blvd, Pasadena, CA 91105. Dr. Aranas' primary practice is Huntington Hospital - Unit in Pasadena, California. Dmand AI also links Dr. Aranas to 1 group practice or clinic, 1 home health agency and 1 skilled nursing facility.

What is Dr. Maritess T. Aranas' office phone number?

The practice phone on file for Dr. Aranas is (626) 397-2618.

What is Dr. Maritess T. Aranas' medical license number?

Dr. Aranas holds California license 20A8507.

Which hospitals is Dr. Maritess T. Aranas affiliated with?

Dr. Aranas is affiliated with Huntington Hospital. Dmand AI links Dr. Aranas to 1 more hospital.

What medical group is Dr. Maritess T. Aranas part of?

Dr. Aranas is linked to Southern California Hospitalist Network.

Does Dr. Maritess T. Aranas accept Medicare?

Yes. CMS data shows Dr. Aranas billed Medicare for 2,099 services in 2024, and Dr. Aranas accepts Medicare assignment.

What is Dr. Maritess T. Aranas' MIPS score?

Dr. Aranas' MIPS final score for performance year 2024 is 42 out of 100, reported individually.

How many Medicare patients does Dr. Maritess T. Aranas see?

CMS counts 566 Medicare patients who saw Dr. Aranas in 2024, with an average age of 76.

Show 7 more questionsShow fewer questions

Is Dr. Maritess T. Aranas board certified?

Yes. Dr. Aranas is board certified in internal medicine by the American Board of Internal Medicine.

What services does Dr. Maritess T. Aranas bill to Medicare?

In 2024, Dr. Aranas' most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99232) and hospital inpatient care (99223).

Where did Dr. Maritess T. Aranas go to medical school?

Dr. Aranas graduated from WesternU College of Osteopathic Medicine of the Pacific in 2002.

What drugs does Dr. Maritess T. Aranas prescribe most?

In 2024 Medicare Part D data, Dr. Aranas' most prescribed drugs by claims were Metoprolol Succinate, Eliquis and Amlodipine Besylate.

Has Dr. Maritess T. Aranas received payments from drug or device companies?

CMS Open Payments shows $272 in general payments to Dr. Aranas from 3 companies from 2016 to 2023. The largest total came from Abbott Laboratories.

How long has Dr. Maritess T. Aranas been practicing?

Dr. Aranas graduated from medical school in 2002, 24 years ago.

What insurance does Dr. Maritess T. Aranas accept?

Dr. Aranas is in network with 2 carriers, including CMS Medicare and Molina. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.

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