Maria Sandra Umali, M.D.
NPI 1790817328 · Gastroenterology Physician · Newhall, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maria Sandra Umali, M.D. is a Gastroenterology Physician provider in Newhall, CA (NPI 1790817328).
Provider details
- NPI number
- 1790817328
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A34940 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,238 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 743 | $145 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 248 | $128 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 71 | $203 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 46 | $187 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 42 | $74 |
| Hospital Discharge Day Management, 30 Minutes Or Less |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 83 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 328 | 107 |
| Losartan Potassium | 224 | 64 |
| Levothyroxine Sodium | 208 | 60 |
| Amlodipine Besylate | 189 | 59 |
| Simvastatin | 160 | 48 |
| Metoprolol Succinate | 124 | 39 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-09
- Last updated
- 2023-03-07
Frequently asked questions
- What is Maria Sandra Umali's NPI number?
- Maria Sandra Umali's National Provider Identifier (NPI) is 1790817328, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Sandra Umali's specialty?
- Maria Sandra Umali is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Maria Sandra Umali located?
- Maria Sandra Umali's practice location on file with NPPES is 22621 Lyons Ave, Newhall, CA 91321-1702.
- What is Maria Sandra Umali's phone number?
- The practice phone number listed in the NPPES registry for Maria Sandra Umali is (661) 964-0597.
- Does Maria Sandra Umali accept Medicare?
- Maria Sandra Umali is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maria Sandra Umali's NPI active?
- Yes — Maria Sandra Umali's NPI (1790817328) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.