XIMED HOSPITALISTS, INC.
NPI 1831124791
Specialist in La Jolla, CA

Q: What is Ximed Hospitalists, Inc.'s NPI number?

The NPI number for Ximed Hospitalists, Inc. is 1831124791. It was assigned to this organization in the NPPES registry on July 11, 2006.

Q: What is Ximed Hospitalists, Inc.'s specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Active since July 11, 2006

9850 GENESEE AVE, SUITE 900, LA JOLLA, CA 92037(858) 452-1279(858) 587-1642 Get Directions Write a Review

NPPES record last updated: August 22, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Ximed Hospitalists, Inc. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

XIMED HOSPITALISTS, INC. (NPI 1831124791) is a healthcare organization registered as a specialist in La Jolla, California and active in the NPI registry since July 2006. The organization lists Thomas C Sounhein, Chief Executive Officer, as its authorized official.

NPPES Registry Identity

NPI1831124791

Entity TypeOrganization

Primary Taxonomy174400000X

Legal Business NameXIMED HOSPITALISTS, INC.

Location Address9850 GENESEE AVE, SUITE 900La Jolla, CA 92037-1224

Mailing Address9850 Genesee Ave, Suite 900La Jolla, CA 92037-1224 · (858) 452-1279 · Fax (858) 587-1642

Phone(858) 452-1279

Fax(858) 587-1642

Organization SubpartNo

Authorized OfficialThomas C SounheinChief Executive Officer · (858) 452-1279

Enumeration DateJuly 11, 2006

Last NPPES UpdateAugust 22, 2020

✔ NPI 1831124791 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers

Taxonomy Code174400000X

Definition

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

9850 GENESEE AVE, La Jolla, CA 92037

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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ximed Hospitalists, Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 43 clinicians reassign Medicare billing to Ximed Hospitalists, Inc., which bills Medicare for the services they deliver. Of these, 14 practice at this address and 29 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 4

Internal Medicine38

Nurse Practitioner3

Family Practice1

Hospitalist1

Nearest to this location (20)

See all 43

Catherine Challender, MD, MPH

Internal Medicine

NPI 1336567866

9850 GENESEE AVE STE 900
La Jolla, CA 92037

(858) 626-7780

✔ PECOS✔ Accepts MedicareSame address

Jason Douglas, MD

Internal Medicine

NPI 1639152044

9850 GENESEE AVE STE 900
La Jolla, CA 92037

(858) 626-7780

✔ PECOS✔ Accepts MedicareSame address

Rami Michael, MD

Internal Medicine

NPI 1467871673

9850 GENESEE AVE STE 900
La Jolla, CA 92037

(858) 626-7784

✔ PECOS✔ Accepts MedicareSame address

Phi Tran, D.O.

Internal Medicine

NPI 1245456672

9850 GENESEE AVE STE 900
La Jolla, CA 92037

(858) 626-7780

✔ PECOS✔ Accepts MedicareSame address

Pamela Lam, D.O.

Internal Medicine

NPI 1235540964

9850 GENESEE AVE STE 900
La Jolla, CA 92037

(858) 626-7780

✔ PECOS✔ Accepts MedicareSame address

Mark Adrian, M.D.

Internal Medicine

NPI 1003879438

9850 GENESEE AVE SUITE 355
La Jolla, CA 92037

(858) 202-0011

✔ PECOS✔ Accepts MedicareSame address

Bruce Covner, M.D.

Internal Medicine

NPI 1720072192

9850 GENESEE AVE SUITE 355
La Jolla, CA 92037

(858) 202-0011

✔ PECOSSame address

Greg Lewis, M.D.

Internal Medicine

NPI 1063447811

9850 GENESEE AVE SUITE 900
La Jolla, CA 92037

(858) 626-7780

✔ PECOS✔ Accepts MedicareSame address

Preeti Mehta, M.D.

Internal Medicine

NPI 1518904143

9850 GENESEE AVE SUITE 900
La Jolla, CA 92037

(858) 626-7780

✔ PECOS✔ Accepts MedicareSame address

Wynnshang Sun, MD

Internal Medicine

NPI 1801806732

9850 GENESEE AVE STE 870
La Jolla, CA 92037

(858) 452-7040

✔ PECOS✔ Accepts MedicareSame address

Nayana Trivedi, M.D.

Internal Medicine

NPI 1134161854

9850 GENESEE AVE SUITE 560
La Jolla, CA 92037

(760) 436-2449

✔ PECOS✔ Accepts MedicareSame address

Jennifer Moitoza, M.D.

Internal Medicine

NPI 1568728210

9888 GENESSE AVE
La Jolla, CA 92037

(858) 626-7780

✔ PECOS✔ Accepts MedicareSame address

John O'fee

Hospitalist

NPI 1578203956

9888 GENESEE AVE
La Jolla, CA 92037

(858) 834-1798

✔ PECOS✔ Accepts MedicareSame address

Nikolitsa Varvaresou, CNP

Nurse Practitioner

NPI 1629221718

9888 GENESEE AVE
La Jolla, CA 92037

(858) 452-1279

✔ PECOS✔ Accepts MedicareSame address

Nicholas Schmidt, MD

Internal Medicine

NPI 1316527435

9850 GENESEE AVE STE 900
La Jolla, CA 92037

(858) 452-1279

✔ PECOS✔ Accepts Medicare0.2 mi

Seda Badalyan, MD

Internal Medicine

NPI 1558396077

9850 GENESEE AVE STE 740
La Jolla, CA 92037

(858) 457-5555

✔ PECOS✔ Accepts Medicare0.2 mi

Surya Chetlapalli, M.D

Internal Medicine

NPI 1134164569

9850 GENESEE AVE STE 900
La Jolla, CA 92037

(858) 626-7782

✔ PECOS✔ Accepts Medicare0.2 mi

Keval Patel, M.D.

Internal Medicine

NPI 1639583438

9850 GENESEE AVE
La Jolla, CA 92037

(858) 452-1279

✔ PECOS✔ Accepts Medicare0.2 mi

Christopher Rice, MD

Internal Medicine

NPI 1154909687

9850 GENESEE AVE STE 900
La Jolla, CA 92037

(858) 452-1279

✔ PECOS✔ Accepts Medicare0.2 mi

Kamron Mirkarimi, M.D.

Internal Medicine

NPI 1497914725

9333 GENESEE AVE STE 250
San Diego, CA 92121

(619) 810-7027

✔ PECOS✔ Accepts Medicare1.0 mi

See all 43 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Ximed Hospitalists, Inc.'s NPI number?

The NPI number for Ximed Hospitalists, Inc. is 1831124791. It was assigned to this organization in the NPPES registry on July 11, 2006.

Where is Ximed Hospitalists, Inc. located?

Ximed Hospitalists, Inc. is located at 9850 Genesee Ave Suite 900, La Jolla, CA 92037. The listed phone number is (858) 452-1279.

What is Ximed Hospitalists, Inc.'s specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Ximed Hospitalists, Inc. enrolled in Medicare?

Yes. Ximed Hospitalists, Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Ximed Hospitalists, Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 43 clinicians in 4 Medicare specialties reassign their Medicare billing to Ximed Hospitalists, Inc.. A 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 the clinician's services. The largest specialties are Internal Medicine (38), Nurse Practitioner (3) and Family Practice (1). Of these, 14 practice at this address and 29 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Ximed Hospitalists, Inc. was last updated on August 22, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.