Arnold S. Baas, MD
Cardiovascular Disease Physician · Los Angeles, CA
Arnold S. Baas, MD is a cardiovascular disease physician with a practice address in Los Angeles, California, and NPI 1720013717, issued on Jul 11, 2006. Check the license (California C51919, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Arnold S. Baas
- Credential
- MD
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- C51919 CA
Self-reported in NPPES; status is on the state search - Practice location
- 100 Ucla Medical Plz Ste 630, Los Angeles, CA 90024
- Phone
- (310) 825-9011
- Enumerated
- Jul 11, 2006
- Record last updated
- Jan 6, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (310) 825-9012
- Medicaid ID
- 00C519190 CA
- Medicare enrollment
- Enrolled (PECOS I20050825000392); accepts Medicare assignment
- Medical or professional school
- University Of Texas Southwestern Medical School At Dallas, 1989
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 2,574 in California → Look up another NPI →
Also registered at 100 Ucla Medical Plz Ste 630
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jamil Aboulhosn, MDCardiovascular Disease Physician1356382717
- Olcay Aksoy, M.D.Cardiovascular Disease Physician1881748630
- Sabina Aleksandrovskaya, AGACNPAcute Care Nurse Practitioner1952072845
- Stefanie Brennan, NPAdult Health Nurse Practitioner1396117800
- Nicholas Brownell, M.D.Cardiovascular Disease Physician1285020487
- Kaily Byfield, NPAcute Care Nurse Practitioner1801306097
Verify Arnold S. Baas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C51919Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% more Medicare Part D claims than the average cardiovascular disease physician in 2024
5,621 Medicare Part D claims for 550 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D.
Most prescribed
- Rosuvastatin Calcium444 claims
- Metoprolol Succinate269 claims
- Amlodipine Besylate263 claims
- Eliquis261 claims
- Atorvastatin Calcium253 claims
- Tacrolimus247 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 87.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- The Regents OF The University OF CaliforniaLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Arnold S. Baas among 2,574 cardiovascular disease physician records in California
Arnold S. Baas, MD is one of 2,574 cardiovascular disease physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 45% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1989 · median 1999 among the 1,742 with a school on file
- Record last updated2020 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in California
There are 2,574 cardiovascular disease physician records in California.
All 2,574 in California → Every provider in Los Angeles → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Jamil Aboulhosn, MDLos Angeles, CA 900241356382717
- Olcay Aksoy, M.D.Los Angeles, CA 900241881748630
- Arash Bereliani, M.D.Los Angeles, CA 900241699722165
- Malcolm Bersohn, MD, PHDLos Angeles, CA 900241275558348
- Kristina Bostrom, MDLos Angeles, CA 900241316972235
- Xinjiang Cai, M.D., PH.D.Los Angeles, CA 900241598156549
- Richard Cheng, MDLos Angeles, CA 900241437426699
- Matthew Durstenfeld, MDLos Angeles, CA 900241871903534
Common questions
What is Arnold S. Baas, MD's NPI number?
Arnold S. Baas, MD's National Provider Identifier (NPI) is 1720013717, issued on Jul 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Arnold S. Baas, MD located?
The NPPES record lists a practice address at 100 Ucla Medical Plz Ste 630, Los Angeles, CA, 90024. Phone: (310) 825-9011. Providers update this record themselves, so call before visiting.
How can I verify Arnold S. Baas, MD's license?
NPPES lists California license number C51919, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Arnold S. Baas, MD prescribe under Medicare Part D?
In 2024, Arnold S. Baas, MD had 5,621 Medicare Part D claims for 550 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. Part D covers Medicare prescriptions only.
What is Arnold S. Baas, MD's MIPS final score?
The 2023 MIPS final score is 87.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.