Walnut Creek Endoscopy Center LLC
NPI 1851568067 · Ambulatory Surgical Clinic/Center · Walnut Creek, CA
Enrolled with Medicare as Part B Supplier - Ambulatory Surgical Center · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Walnut Creek Endoscopy Center LLC is a Ambulatory Surgical Clinic/Center organization in Walnut Creek, CA (NPI 1851568067).
Provider details
- NPI number
- 1851568067
- Entity type
- Organization
- Primary specialty
- Ambulatory Surgical Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Samuel Marcus, Co-Founder(650) 331-4650
Specialties & taxonomies
Ambulatory Health Care Facilities
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 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
1,327 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) |
|---|---|---|
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 479 | $710 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 395 | $464 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 243 | $851 |
| Colorectal Cancer Screening; Colonoscopy on Individual at High RiskG0105 | 86 | $626 |
| Microscopic Exam of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43252 | 52 | $1,186 |
| Colorectal Cancer Screening; Colonoscopy on Individual Not Meeting Criteria for High Risk |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-05-15
- Last updated
- 2008-05-16
Frequently asked questions
- What is Walnut Creek Endoscopy Center LLC's NPI number?
- Walnut Creek Endoscopy Center LLC's National Provider Identifier (NPI) is 1851568067, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Walnut Creek Endoscopy Center LLC?
- Walnut Creek Endoscopy Center LLC is classified in the NPPES registry as Ambulatory Surgical Clinic/Center (Ambulatory Health Care Facilities).
- Where is Walnut Creek Endoscopy Center LLC located?
- Walnut Creek Endoscopy Center LLC's practice location on file with NPPES is 365 Lennon Ln Ste 100, Walnut Creek, CA 94598-5911.
- What is Walnut Creek Endoscopy Center LLC's phone number?
- The practice phone number listed in the NPPES registry for Walnut Creek Endoscopy Center LLC is (650) 331-4662.
- Does Walnut Creek Endoscopy Center LLC accept Medicare?
- Walnut Creek Endoscopy Center LLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Walnut Creek Endoscopy Center LLC?
- The authorized official listed on Walnut Creek Endoscopy Center LLC's NPPES record is Samuel Marcus, Co-Founder. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Walnut Creek Endoscopy Center LLC's NPI active?
- Yes — Walnut Creek Endoscopy Center LLC's NPI (1851568067) is active in the NPPES registry as of the last update on 2008-05-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.