Maria Sandra Alzona Umali, M.D.
Gastroenterology Physician · Newhall, CA
Maria Sandra Alzona Umali, M.D. is a gastroenterology physician with a practice address in Newhall, California, and NPI 1790817328, issued on Mar 9, 2007. Check the license (California A34940, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Maria Sandra Alzona Umali
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A34940 CA
Self-reported in NPPES; status is on the state search - Practice location
- 22621 Lyons Ave, Newhall, CA 91321
- Phone
- (661) 964-0597
- Enumerated
- Mar 9, 2007
- Record last updated
- Mar 7, 2023
- Fax
- (661) 964-0598
- Medicare enrollment
- Enrolled (PECOS I20051215000892); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 22621 Lyons Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Walter King, MFTMarriage & Family Therapist1366525818
Verify Maria Sandra Alzona Umali in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A34940Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.3 times the Medicare Part D claims of the average gastroenterology physician in 2024
4,301 Medicare Part D claims for 355 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. 27 claims were for opioids.
Most prescribed
- Atorvastatin Calcium328 claims
- Losartan Potassium224 claims
- Levothyroxine Sodium208 claims
- Amlodipine Besylate189 claims
- Simvastatin160 claims
- Metoprolol Succinate124 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): 19.5 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).
Maria Sandra Alzona Umali among 2,140 gastroenterology physician records in California
Maria Sandra Alzona Umali, M.D. is one of 2,140 gastroenterology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 52% of them.
- NPI issued2007 · 52% of these records are older, 37% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1974 · median 2002 among the 1,538 with a school on file
- Record last updated2023 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 gastroenterology physician records list a practice address in Newhall
They are 4 of the 369 NPPES records with a practice address in Newhall, and 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Newhall → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Michael Jean, MDNewhall, CA 913211033163985
- Rajinder Kaushal, M.D.Newhall, CA 913211285706259
- Michael Quon, M.D.Newhall, CA 913211609802032
- Jay Krishnan, M.DNorthridge, CA 913241891972758
- Daniel Eshaghian, D.O.Northridge, CA 913251275943128
- Piyush Jogani, MDNorthridge, CA 913251730197609
- Gustavo Machicado, MDNorthridge, CA 913251568434652
- Suhail Salem, M.D.Northridge, CA 913251750547030
Common questions
What is Maria Sandra Alzona Umali, M.D.'s NPI number?
Maria Sandra Alzona Umali, M.D.'s National Provider Identifier (NPI) is 1790817328, issued on Mar 9, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Maria Sandra Alzona Umali, M.D. located?
The NPPES record lists a practice address at 22621 Lyons Ave, Newhall, CA, 91321. Phone: (661) 964-0597. Providers update this record themselves, so call before visiting.
How can I verify Maria Sandra Alzona Umali, M.D.'s license?
NPPES lists California license number A34940, 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 Maria Sandra Alzona Umali, M.D. prescribe under Medicare Part D?
In 2024, Maria Sandra Alzona Umali, M.D. had 4,301 Medicare Part D claims for 355 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Maria Sandra Alzona Umali, M.D.'s MIPS final score?
The 2023 MIPS final score is 19.5 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.