Mark K. Yamanaka, M.D.
Pulmonary Disease Physician · Oceanside, CA
Mark K. Yamanaka, M.D. is a pulmonary disease physician with a practice address in Oceanside, California, and NPI 1013004852, issued on Oct 5, 2006. Check the license (California G48542, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark K. Yamanaka
- Credential
- M.D.
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- G48542 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3907 Waring RD Ste 2, Oceanside, CA 92056
- Phone
- (760) 941-0221
- Enumerated
- Oct 5, 2006
- Record last updated
- Jul 12, 2023
- Fax
- (760) 941-0905
- Medicare enrollment
- Enrolled (PECOS I20100621000523); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 1981
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 1,443 in California → Look up another NPI →
Also registered at 3907 Waring RD Ste 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Frank Corona, M.D.Pulmonary Disease Physician1821197385
- Steven Sims, MS, RN, AGPCNP-BCNurse Practitioner1316302151
- Marius Viseroi, M.D.Pulmonary Disease Physician1669886933
Verify Mark K. Yamanaka in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G48542Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average pulmonary disease physician in 2024
429 Medicare Part D claims for 104 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D.
Most prescribed
- Roflumilast64 claims
- Trelegy Ellipta47 claims
- Azithromycin41 claims
- Prednisone37 claims
- Albuterol Sulfate Hfa35 claims
- Citalopram Hbr19 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.
Industry payments in 2024: $1,260.22
55 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 8,806 providers of this specialty with any payment received $5,159.88 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Cep America - Intensivists PCLong Beach, CA
- Pulmonary Specialists OF North County IncOceanside, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark K. Yamanaka among 1,443 pulmonary disease physician records in California
Mark K. Yamanaka, M.D. 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
- Graduated1981 · median 2002 among the 1,061 with a school on file
- Record last updated2023 · 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 Oceanside → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Frank Corona, M.D.Oceanside, CA 920561821197385
- Martin Nielsen, M.D.Oceanside, CA 920561760400550
- Pratan Vathesatogkit, M.D.Oceanside, CA 920561053441329
- Marius Viseroi, M.D.Oceanside, CA 920561669886933
- Daniel Lamorte, MDCamp Pendleton, CA 920551497218366
- Christopher Cheng, MDLa Jolla, CA 920371194228957
- Clinton Colaco, MDLa Jolla, CA 920371932405081
- Bryce Duchman, M.D.La Jolla, CA 920371659753218
Common questions
What is Mark K. Yamanaka, M.D.'s NPI number?
Mark K. Yamanaka, M.D.'s National Provider Identifier (NPI) is 1013004852, issued on Oct 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark K. Yamanaka, M.D. located?
The NPPES record lists a practice address at 3907 Waring RD Ste 2, Oceanside, CA, 92056. Phone: (760) 941-0221. Providers update this record themselves, so call before visiting.
How can I verify Mark K. Yamanaka, M.D.'s license?
NPPES lists California license number G48542, 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 Mark K. Yamanaka, M.D. prescribe under Medicare Part D?
In 2024, Mark K. Yamanaka, M.D. had 429 Medicare Part D claims for 104 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.