Mark Jay Klein, MD
Pulmonary Disease Physician · Salinas, CA
Mark Jay Klein, MD is a pulmonary disease physician with a practice address in Salinas, California, and NPI 1093718165, issued on May 23, 2005. Check the license (California G22851, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark Jay Klein
- Credential
- MD
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- G22851 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1033 Los Palos Dr, Salinas, CA 93901
- Phone
- (831) 757-2058
- Enumerated
- May 23, 2005
- Record last updated
- Jun 6, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (831) 757-0232
- Entity
- Type 1 · individual
Also registered at 1033 Los Palos Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Melanie Allen, CDERegistered Dietitian1053633099
- Muneera AtchaRheumatology Physician1154611796
- Guadalupe Castillo, RNDiabetes Educator Registered Nurse1215307871
- Mario Cole, MDPulmonary Disease Physician1356328991
- Rene Colorado, MDNeurology Physician1821350265
- Frank Ganzhorn, MDPulmonary Disease Physician1164473807
Verify Mark Jay Klein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G22851Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average pulmonary disease physician in 2024
291 Medicare Part D claims for 86 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 57% of claims.
Most prescribed
- Montelukast Sodium39 claims
- Albuterol Sulfate Hfa31 claims
- Trelegy Ellipta28 claims
- Anoro Ellipta27 claims
- Breo Ellipta24 claims
- Roflumilast17 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.
Pulmonary Disease Physician providers in California
There are 1,443 pulmonary disease physician records in California.
Other pulmonary disease physician records in California
- Manoochehr Abadian Sharifabad, M.D.Fountain Valley, CA1164655817
- Mahmoud Abdallah, DOGarden Grove, CA1871014027
- Mohamad Abdelfattah, MDFullerton, CA1134539711
- Loui Abdelghani, M.DStockton, CA1912161787
- Zainab Abdulsada, MBCHBSacramento, CA1144858333
- John Abe, MDTorrance, CA1578542569
- Moustapha Abidali, DOGlendora, CA1669810123
- Mohammed Abo Khamis, M.D.Modesto, CA1508098419
- Arin Aboulian, MDGlendale, CA1104038256
- Khader Abounasr, MDRancho Cucamonga, CA1780884015
Common questions
What is Mark Jay Klein, MD's NPI number?
Mark Jay Klein, MD's National Provider Identifier (NPI) is 1093718165, issued on May 23, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark Jay Klein, MD located?
The NPPES record lists a practice address at 1033 Los Palos Dr, Salinas, CA, 93901. Phone: (831) 757-2058. Providers update this record themselves, so call before visiting.
How can I verify Mark Jay Klein, MD's license?
NPPES lists California license number G22851, 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 Jay Klein, MD prescribe under Medicare Part D?
In 2024, Mark Jay Klein, MD had 291 Medicare Part D claims for 86 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.