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DR. MARIA SANDRA ALZONA UMALI M.D.
NPI 1790817328
Internal Medicine - Gastroenterology in Newhall, CA

Active since March 09, 2007PECOS EnrolledAccepts Medicare Assignment
19.51/100
CMS Quality Rating
22621 LYONS AVE, NEWHALL, CA 91321(661) 964-0597(661) 964-0598 Get Directions Write a Review

NPPES record last updated: March 7, 2023. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Maria Sandra Alzona Umali M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARIA SANDRA ALZONA UMALI M.D. (NPI 1790817328) is an individual gastroenterology provider in Newhall, California, licensed in California (A34940) and active in the NPI registry since March 2007. She is enrolled in Medicare PECOS and is a graduate of Other (1974).

NPPES Registry Identity

NPI1790817328
Entity TypeIndividualFemale
Primary Taxonomy207RG0100X
Provider Legal NameDR. MARIA SANDRA ALZONA UMALICredential: M.D.
Location Address22621 LYONS AVENewhall, CA 91321-1702
Mailing AddressPo Box 221360Newhall, CA 91322-1360 · (661) 964-0597 · Fax (661) 964-0598
Phone(661) 964-0597
Fax(661) 964-0598
Sole ProprietorNo
Medical School CMSOtherGraduated 1974
Enumeration DateMarch 9, 2007
Last NPPES UpdateMarch 7, 2023
✔ NPI 1790817328 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in CA · A34940
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
Also ListedInternal MedicineTaxonomy 207R00000X · License A34940 (CA)
Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License A34940 (CA)
22621 LYONS AVE, Newhall, CA 91321
Open in Google Maps ↗

Other Identifiers 1

Other05D1000027CA · Clia

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Maria Sandra Alzona Umali M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8426079559
PECOS Enrollment IDI20051215000892
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
743 services309 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
248 services40 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
71 services61 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
46 services40 patients
Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306
This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.
42 services40 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
40 services35 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91321 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

19.51/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality0
Improvement Activities0
Cost65.04

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
13 suppliers25 claims45 services$6.45 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
6 suppliers12 claims12 services$0.98 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MR. WALTER HAROLD KING MFT
Marriage & Family Therapist
22621 LYONS AVE, 205
NEWHALL, CA 91321
Los Angeles County (661) 287-9337
MARIA SANDRA A UMALI MD INC
Internal Medicine (Gastroenterology)
22621 LYONS AVE
NEWHALL, CA 91321
Los Angeles County (661) 964-0597

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Maria Sandra Umali's NPI number?

The NPI number for Maria Sandra Umali is 1790817328. It was assigned to this individual provider in the NPPES registry on March 9, 2007.

Where is Maria Sandra Umali located?

Maria Sandra Umali practices at 22621 Lyons Ave, Newhall, CA 91321. The listed phone number is (661) 964-0597.

What is Maria Sandra Umali's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Maria Sandra Umali enrolled in Medicare?

Yes. Maria Sandra Umali is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Maria Sandra Umali was last updated on March 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.