Hatem Mezher
Nephrology Physician · Santa Maria, CA
Hatem Mezher is a nephrology physician with a practice address in Santa Maria, California, and NPI 1467716274, issued on Jun 26, 2012. Check the license (California A134355, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Hatem Mezher
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- A134355 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1505 Shepard Dr Ste 103, Santa Maria, CA 93454
- Phone
- (718) 613-4000
- Enumerated
- Jun 26, 2012
- Record last updated
- Sep 29, 2025
- Fax
- (805) 862-4196
- Medicare enrollment
- Enrolled (PECOS I20150604002082); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Also registered at 1505 Shepard Dr Ste 103
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Arashdeep Poonia, M.D.Nephrology Physician1417235672
Verify Hatem Mezher in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A134355Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% more Medicare Part D claims than the average nephrology physician in 2024
1,587 Medicare Part D claims for 236 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Sevelamer Carbonate156 claims
- Hydralazine Hcl146 claims
- Amlodipine Besylate120 claims
- Calcium Acetate106 claims
- Furosemide94 claims
- Prednisone83 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 practice group's MIPS final score for 2023 (Medicare payment program): 94.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Santa Maria Nephrology Medical GroupSanta Maria, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hatem Mezher among 1,468 nephrology physician records in California
Hatem Mezher is one of 1,468 nephrology physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 80% of them.
- NPI issued2012 · 80% of these records are older, 17% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2002 · median 2001 among the 1,128 with a school on file
- Record last updated2025 · 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 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in Santa Maria → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Muthiyaliah Babu, M.D.Santa Maria, CA 934541033141213
- James Jones, M.D.Santa Maria, CA 934541053486399
- Arashdeep Poonia, M.D.Santa Maria, CA 934541417235672
- Michael Dibiase, M.D.San Luis Obispo, CA 934051316188048
- Anthony Wolfe, MDSan Luis Obispo, CA 934051477637783
- Ernest Daniel Dytiapco, MDSan Luis Obispo, CA 934011255629846
- Scott Morey, M.D.San Luis Obispo, CA 934011770661894
- Brian Penton, M.D.San Luis Obispo, CA 934011558316083
Common questions
What is Hatem Mezher's NPI number?
Hatem Mezher's National Provider Identifier (NPI) is 1467716274, issued on Jun 26, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Hatem Mezher located?
The NPPES record lists a practice address at 1505 Shepard Dr Ste 103, Santa Maria, CA, 93454. Phone: (718) 613-4000. Providers update this record themselves, so call before visiting.
How can I verify Hatem Mezher's license?
NPPES lists California license number A134355, 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 Hatem Mezher prescribe under Medicare Part D?
In 2024, Hatem Mezher had 1,587 Medicare Part D claims for 236 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
What is Hatem Mezher's MIPS final score?
The 2023 MIPS final score is 94.9 of 100, reported for the practice group. 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.