Jason Umphress, M.D.
NPI 1194741595 · Gastroenterology Physician · Woodland, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jason Umphress, M.D. is a Gastroenterology Physician provider in Woodland, CA (NPI 1194741595).
Provider details
- NPI number
- 1194741595
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A64129 (CA)
Specialties & taxonomies
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
820 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) |
|---|---|---|
| Moderate Sedation Services Provided By the Same Physician Or Other Qualified Health Care Professional Performing a Gastrointestinal Endoscopic Service That Sedation Supports, Requiring the Presence of an Independent Trained Observer to Assist in the MonitoG0500 | 219 | $6 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 138 | $122 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 105 | $100 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 84 | $137 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 77 | $267 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 185 | 178 |
| Omeprazole | 110 | 45 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 85 | 78 |
| Famotidine | 70 | 29 |
| Dicyclomine Hcl | 55 | 14 |
| Sodium Chloride/Nahco3/Kcl/Pegbrand: Peg 3350-Electrolyte | 46 | 46 |
| Pantoprazole Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-15
- Last updated
- 2013-10-30
Frequently asked questions
- What is Jason Umphress's NPI number?
- Jason Umphress's National Provider Identifier (NPI) is 1194741595, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jason Umphress's specialty?
- Jason Umphress is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Jason Umphress located?
- Jason Umphress's practice location on file with NPPES is 1321 Cottonwood St, Woodland, CA 95695-5131.
- What is Jason Umphress's phone number?
- The practice phone number listed in the NPPES registry for Jason Umphress is (530) 666-1631.
- Does Jason Umphress accept Medicare?
- Jason Umphress is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jason Umphress's NPI active?
- Yes — Jason Umphress's NPI (1194741595) is active in the NPPES registry as of the last update on 2013-10-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.