KATARINA GUZMAN MD
NPI 1598737645
Hospitalist in San Jose, CA
About Katarina Guzman Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATARINA GUZMAN MD (NPI 1598737645) is an individual hospitalist provider in San Jose, California, licensed in California (C53016) and active in the NPI registry since February 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Katarina Guzman Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Katarina Guzman reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mountain View, CA 94040
- Reassigned Medicare billing, California enrollment
- 217 clinicians in this Medicare group
Apple Valley, CA 92307
- Reassigned Medicare billing, California enrollment
- 914 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 95124 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.
SAN JOSE, CA 95124
SAN JOSE, CA 95124
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 Katarina Guzman's NPI number?
The NPI number for Katarina Guzman is 1598737645. It was assigned to this individual provider in the NPPES registry on February 3, 2006.
Where is Katarina Guzman located?
Katarina Guzman practices at 2585 Samaritan Dr, San Jose, CA 95124. The listed phone number is (408) 278-3000.
What is Katarina Guzman's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Katarina Guzman enrolled in Medicare?
Yes. Katarina Guzman is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Katarina Guzman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Katarina Guzman reassigns Medicare benefits to 2 organizations: Quantum Bay Area Hospitalist Medical Group Inc (Mountain View, CA) and Hospitalist Medicine Physicians Of California, Inc (Apple Valley, CA). 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 Katarina Guzman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Katarina Guzman was last updated on October 25, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Katarina Guzman, MD · NPI 1598737645
Hospitalist physician in San Jose, California. Individual provider, active in the CMS NPPES registry since February 3, 2006.
## Identity
- **NPI:** 1598737645 (Entity type: Individual)
- **Enumerated:** February 3, 2006
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** C53016 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2585 SAMARITAN DR, San Jose, CA 95124-4107
- **Phone:** (408) 278-3000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Quantum Bay Area Hospitalist Medical Group Inc (NPI 1902279656, Mountain View, CA); Hospitalist Medicine Physicians Of California, Inc (NPI 1184663965, Apple Valley, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 25, 2017
- **Other identifiers:** Medicare ID-Type Unspecified 110009541; Medicare UPIN G49210; Medicaid 210820800 (MA)
---
Source: [NPI Profile](https://npiprofile.com/npi/1598737645) · Data from the CMS NPPES public registry.