LEI GUO M.D.
NPI 1881836096
Hospitalist in Modesto, CA
About Lei Guo M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LEI GUO M.D. (NPI 1881836096) is an individual hospitalist provider in Modesto, California, licensed in California (A118973) and active in the NPI registry since April 2009. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Lei Guo M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
8Medicare enrollment records show Lei Guo reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Newark, CA 94560
- Reassigned Medicare billing, California enrollment
- 900 clinicians in this Medicare group
Berkely, CA 94710
- Reassigned Medicare billing, California enrollment
- 35 clinicians in this Medicare group
Porterville, CA 93257
- Reassigned Medicare billing, California enrollment
- 159 clinicians in this Medicare group
Apple Valley, CA 92307
- Reassigned Medicare billing, California enrollment
- 914 clinicians in this Medicare group
San Bernardino, CA 92404
- Reassigned Medicare billing, California enrollment
- 1,216 clinicians in this Medicare group
Colton, CA 92324
- Reassigned Medicare billing, California enrollment
- 338 clinicians in this Medicare group
Costa Mesa, CA 92626
- Reassigned Medicare billing, California enrollment
- 103 clinicians in this Medicare group
San Diego, CA 92108
- Reassigned Medicare billing, California enrollment
- 98 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 95355 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
Reported Quality Measures
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Lei Guo's NPI number?
The NPI number for Lei Guo is 1881836096. It was assigned to this individual provider in the NPPES registry on April 2, 2009.
Where is Lei Guo located?
Lei Guo practices at 600 Coffee Rd, Modesto, CA 95355. The listed phone number is (209) 521-6097.
What is Lei Guo's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Lei Guo enrolled in Medicare?
Yes. Lei Guo is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Lei Guo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lei Guo reassigns Medicare benefits to 8 organizations: Alameda Health System (Newark, CA), Inpatient Consultants Of California, Inc. (Berkely, CA), 24 On Physicians Of California, PC (Porterville, CA), Hospitalist Medicine Physicians Of California, Inc (Apple Valley, CA), Inpatient Specialists Of California, PC (San Bernardino, CA) and 3 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Lei Guo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Lei Guo accept?
Health plans from Anthem Blue Cross and Blue Shield list Lei Guo as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Lei Guo was last updated on August 2, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Lei Guo, M.D. · NPI 1881836096
Hospitalist physician in Modesto, California. Individual provider, active in the CMS NPPES registry since April 2, 2009.
## Identity
- **NPI:** 1881836096 (Entity type: Individual)
- **Enumerated:** April 2, 2009
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** A118973 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 600 COFFEE RD, Modesto, CA 95355-4201
- **Phone:** (209) 521-6097
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 8 organizations under Medicare reassignment (form CMS-855R): Alameda Health System (NPI 1497956288, Newark, CA); Inpatient Consultants Of California, Inc. (NPI 1831134253, Berkely, CA); 24 On Physicians Of California, PC (NPI 1730570565, Porterville, CA); Hospitalist Medicine Physicians Of California, Inc (NPI 1184663965, Apple Valley, CA); Inpatient Specialists Of California, PC (NPI 1952792475, San Bernardino, CA); and 3 more · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 2, 2012
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Source: [NPI Profile](https://npiprofile.com/npi/1881836096) · Data from the CMS NPPES public registry.