Physician Profile
Maria Sandra A. Umali, M.D.
Unclaimed ProfileAbout Dr. Umali
Based in Newhall, CA, Maria Sandra A. Umali, M.D. is listed in the NPI registry under gastroenterology. Maria Sandra is also listed as specializing in cardiovascular disease and internal medicine. According to Medicare claims data, Maria Sandra cared for 573 Medicare patients across 1,238 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes, and established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more. NPI 1790817328 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (661) 964-0597
- Email not available
Practice Locations
22621 LYONS AVE
Newhall, CA 91321
Conditions Commonly Evaluated or Treated
Within Gastroenterology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Acid reflux
- Celiac disease
- Crohn's disease
- Hemorrhoids
- IBS
- Swallowing difficulties
- Ulcerative colitis
Biliary and pancreas
- Acute pancreatitis
- Gallstones
- Pancreatic cysts
- Primary sclerosing cholangitis
Colon and anorectal
- Anal fissure
- Colon cancer
- Colon polyps
- Lower gastrointestinal bleeding
Esophagus and swallowing
- Barrett's esophagus
- Eosinophilic esophagitis
- Esophageal stricture
- Esophagitis
Functional bowel and motility
- Chronic diarrhea
- Fecal incontinence
- Small intestinal bacterial overgrowth
Liver
- Ascites
- Autoimmune hepatitis
- Cirrhosis
- Fatty liver disease
- Hemochromatosis
- Hepatitis B
- Hepatitis C
- Portal hypertension
Stomach and duodenum
- Functional dyspepsia
- Gastritis
- Gastroparesis
- H. pylori infection
- Peptic ulcer disease
Bowel & Colon
- Diverticulitis
Digestive Symptoms
- Constipation
Gallbladder & Bile Ducts
- Blocked Bile Duct
Procedures & services
Most searched procedures
- Colonoscopy
- Endoscopy
- Gallbladder removal
- Hernia repair
- Liver biopsy
Lower endoscopy
- Colon polyp removal
- Endoscopic control of gastrointestinal bleeding
- Flexible sigmoidoscopy
Upper endoscopy
- Endoscopic submucosal dissection
- Esophageal dilation
Capsule and physiology testing
- Anorectal manometry
- Capsule endoscopy
- Esophageal manometry
Diagnostic Testing
- 24-Hour Acid Reflux Test
- EUS-Guided Fine Needle Biopsy
- H. Pylori Breath Test
- SIBO Breath Test
Liver procedures
- Esophageal variceal banding
- Liver elastography
- Paracentesis
Treatments
- Stool Transplant
Procedures Most Often Billed to Medicare
1,238 services · 573 patients · 9 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
42 | Too few peers to compare |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
743 | More than most peers in Gastroenterology |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
248 | More than most peers in Gastroenterology |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
71 | More often than most peers in Gastroenterology |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
46 | More often than most peers in Gastroenterology |
| Hospital discharge day management, 30 minutes or less | Office visit | 99238 |
40 | More than most peers in Gastroenterology |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
23 | Less often than most peers in Gastroenterology |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
14 | Less often than most peers in Gastroenterology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
11 | Less often than most peers in Gastroenterology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other gastroenterologists in Newhall 3
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 7 related providers in 1 group
Class of 1974 at Other 7
Providers who graduated from the same medical school in the same year.
Common questions
What does Maria Sandra A. Umali specialize in?
Maria Sandra A. Umali is a gastroenterologist in Newhall, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
Where is Maria Sandra A. Umali located?
Maria Sandra A. Umali is listed at 22621 Lyons Ave, Newhall, CA 91321. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Maria Sandra A. Umali's phone number?
The number on file is (661) 964-0597. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Maria Sandra A. Umali's NPI number?
Maria Sandra A. Umali's National Provider Identifier is 1790817328. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Maria Sandra A. Umali train?
Maria Sandra A. Umali attended Other, graduating in 1974. This comes from the CMS National Downloadable File.
CMS public data
How long has Maria Sandra A. Umali been practicing?
Maria Sandra A. Umali has 52 years experience. Calculated from a graduation year of 1974, reported in the CMS National Downloadable File.
CMS public data
What does Maria Sandra A. Umali do most often?
According to Medicare billing data, Maria Sandra A. Umali provides treatments such as ultrasound of heart with color-depicted blood flow, rate, direction and valve function, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Maria Sandra A. Umali confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Maria Sandra A. Umali. If this is you, claiming it is free.
Guide.md
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