Michael Kazak, MD
Geriatric Medicine (Internal Medicine) Physician · Santa Maria, CA
Michael Kazak, MD is a geriatric medicine (internal medicine) physician with a practice address in Santa Maria, California, and NPI 1285732636, issued on Sep 20, 2006. Check the license (California A43888, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michael Kazak
- Credential
- MD
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- A43888 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1040 W Main St, Santa Maria, CA 93458
- Phone
- (805) 922-8269
- Enumerated
- Sep 20, 2006
- Record last updated
- Nov 24, 2023
- Fax
- (805) 349-9509
- Medicaid ID
- GR0050690 CA
- Medicare enrollment
- Enrolled (PECOS I20080416000683); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 532 in California → Look up another NPI →
Also registered at 1040 W Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Samara Kazak, MDFamily Medicine Physician1487230413
Verify Michael Kazak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A43888Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.0 times the Medicare Part D claims of the average geriatric medicine (internal medicine) physician in 2024
16,833 Medicare Part D claims for 835 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 555 claims were for opioids.
Most prescribed
- Amlodipine Besylate804 claims
- Metformin Hcl735 claims
- Atorvastatin Calcium685 claims
- Simvastatin642 claims
- Losartan Potassium573 claims
- Levothyroxine Sodium531 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): 28.9 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).
Michael Kazak among 532 geriatric medicine (internal medicine) physician records in California
Michael Kazak, MD is one of 532 geriatric medicine (internal medicine) physician records with a practice address in California. 77% 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, 46% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 51% of these records are
- Graduated1986 · median 1999 among the 271 with a school on file
- Record last updated2023 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in California
There are 532 geriatric medicine (internal medicine) physician records in California.
All 532 in California → Every provider in Santa Maria → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Wallace Schwam, M.D.Pismo Beach, CA 934491902144694
- Christine Barber, M.D.San Luis Obispo, CA 934091407047475
- Kyriacos Charalambides, M.D.Lancaster, CA 935341255589420
- Sara Dhamija, M.D.Lancaster, CA 935341275643405
- Vincent Ho, M.D.Lancaster, CA 935341124138359
- Kanagaratnam Sivalingam, M.D.Lancaster, CA 935341578578365
- Gilbert Bourjeily, M.D.Tehachapi, CA 935611285882373
- Andreas Ahlas, M.D.Bakersfield, CA 933011326200833
Common questions
What is Michael Kazak, MD's NPI number?
Michael Kazak, MD's National Provider Identifier (NPI) is 1285732636, issued on Sep 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Kazak, MD located?
The NPPES record lists a practice address at 1040 W Main St, Santa Maria, CA, 93458. Phone: (805) 922-8269. Providers update this record themselves, so call before visiting.
How can I verify Michael Kazak, MD's license?
NPPES lists California license number A43888, 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 Michael Kazak, MD prescribe under Medicare Part D?
In 2024, Michael Kazak, MD had 16,833 Medicare Part D claims for 835 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. Part D covers Medicare prescriptions only.
What is Michael Kazak, MD's MIPS final score?
The 2023 MIPS final score is 28.9 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.