Nilo Ouano Arnaiz, MD
Pulmonary Disease Physician · Los Angeles, CA
Nilo Ouano Arnaiz, MD is a pulmonary disease physician with a practice address in Los Angeles, California, and NPI 1386678498, issued on Jul 11, 2006. Check the license (California A61314, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nilo Ouano Arnaiz
- Credential
- MD
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- A61314 CA
Self-reported in NPPES; status is on the state search - Practice location
- 200 Medical Plz, Los Angeles, CA 90095
- Phone
- (310) 828-7172
- Enumerated
- Jul 11, 2006
- Record last updated
- Nov 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (310) 394-7807
- Medicaid ID
- 00A613140 CA
- Medicare enrollment
- Enrolled (PECOS I20080728000808); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 1995
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 1,443 in California → Look up another NPI →
Also registered at 200 Medical Plz
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Nilo Ouano Arnaiz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A61314Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% fewer Medicare Part D claims than the average pulmonary disease physician in 2024
844 Medicare Part D claims for 188 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 41% of claims.
Most prescribed
- Azelastine Hcl176 claims
- Spiriva Respimat160 claims
- Wixela Inhub95 claims
- Albuterol Sulfate Hfa92 claims
- Prednisone48 claims
- Ofev27 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupAnaheim, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nilo Ouano Arnaiz among 1,443 pulmonary disease physician records in California
Nilo Ouano Arnaiz, MD is one of 1,443 pulmonary disease physician records with a practice address in California. 84% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 51% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1995 · median 2002 among the 1,061 with a school on file
- Record last updated2021 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pulmonary Disease Physician providers in California
There are 1,443 pulmonary disease physician records in California.
All 1,443 in California → Every provider in Los Angeles → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- John Belperio, MDLos Angeles, CA 900951285659482
- Christopher Cooper, MDLos Angeles, CA 900951588680482
- Steven Dubinett, M.D.Los Angeles, CA 900951144255878
- Tomas Ganz, MDLos Angeles, CA 900951083639264
- Michael Keane, MDLos Angeles, CA 900951124047600
- Airie Kim, M.D.Los Angeles, CA 900951386662807
- Eric Kleerup, MDLos Angeles, CA 900951215956636
- Joseph Lynch, MDLos Angeles, CA 900951396764247
Common questions
What is Nilo Ouano Arnaiz, MD's NPI number?
Nilo Ouano Arnaiz, MD's National Provider Identifier (NPI) is 1386678498, issued on Jul 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nilo Ouano Arnaiz, MD located?
The NPPES record lists a practice address at 200 Medical Plz, Los Angeles, CA, 90095. Phone: (310) 828-7172. Providers update this record themselves, so call before visiting.
How can I verify Nilo Ouano Arnaiz, MD's license?
NPPES lists California license number A61314, 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 Nilo Ouano Arnaiz, MD prescribe under Medicare Part D?
In 2024, Nilo Ouano Arnaiz, MD had 844 Medicare Part D claims for 188 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. Part D covers Medicare prescriptions only.
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.