GREGORY KATO
NPI 1104924760
Hospitalist in Mountain View, CA

Q: What is Gregory Kato's NPI number?

The NPI number for Gregory Kato is 1104924760. It was assigned to this individual provider in the NPPES registry on September 20, 2006.

Q: What is Gregory Kato's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Q: When was this NPI record last updated?

The NPPES record for Gregory Kato was last updated on May 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months 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.

Active since September 20, 2006PECOS EnrolledAccepts Medicare Assignment

2500 GRANT RD, 2ND FLOOR, SUITE C-D, MOUNTAIN VIEW, CA 94040(408) 739-6000 Get Directions Write a Review

NPPES record last updated: May 8, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Gregory Kato NPPES

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

GREGORY KATO (NPI 1104924760) is an individual hospitalist provider in Mountain View, California, licensed in California (A80703) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Mountain View, and is a graduate of Tufts University School Of Medicine (2001).

NPPES Registry Identity

NPI1104924760

Entity TypeIndividualMale

Primary Taxonomy208M00000X

Provider Legal NameGREGORY KATO

Location Address2500 GRANT RD, 2ND FLOOR, SUITE C-DMountain View, CA 94040-4302

Mailing Address701 E El Camino RealMountain View, CA 94040-2833 · (408) 739-6000

Phone(408) 739-6000

Sole ProprietorNo

Medical School CMSTufts University School Of MedicineGraduated 2001

Enumeration DateSeptember 20, 2006

Last NPPES UpdateMay 8, 2026

NPPES CertifiedMay 8, 2026

✔ NPI 1104924760 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians

Taxonomy Code208M00000X

License✔ Licensed in CA · A80703

Definition

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

2500 GRANT RD, Mountain View, CA 94040

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Secondary Practice Location 1

Location 1701 E El Camino RealMountain View, CA 94040-2833 · Phone (650) 988-8479

Other Identifiers 1

OtherA80703CA · Medical License

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Gregory Kato is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6002702362

PECOS Enrollment IDI20040224000654

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Gregory Kato reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

County Of Santa Clara

2.8 mi

Clinic/Center

2500 CALIFORNIA ST
Mountain View, CA 94040

Reassigned Medicare billing, California enrollment
2,460 clinicians in this Medicare group

NPI 1912650672 (408) 885-5000

Sutter Bay Medical Foundation

6.7 mi

Multi-Specialty

795 EL CAMINO REAL
Palo Alto, CA 94301

Reassigned Medicare billing, California enrollment
4,479 clinicians in this Medicare group

NPI 1013950807 (650) 321-4121

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 94040 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$156.67 typical visit price

range $70.37 – $206.04

Typical copayment $39.16 (range $17.59 – $51.51)

Most-billed visit code 99204

Established Patient

$121.77 typical visit price

range $23.96 – $169.60

Typical copayment $30.44 (range $5.99 – $42.40)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

BARBARA MOCNIK APRN

Registered Nurse (Psychiatric/Mental Health, Adult)

2500 GRANT RD
MOUNTAIN VIEW, CA 94040

Santa Clara County (650) 940-7187

DR. JONATHAN TODD ENGELHARDT MD

Emergency Medicine

2500 GRANT RD
MOUNTAIN VIEW, CA 94040

Santa Clara County (650) 940-7000

DR. SHAWN MATHEW JACOB MD

Internal Medicine

2500 GRANT RD
MOUNTAIN VIEW, CA 94040

Santa Clara County (650) 940-7000

NADIA KIRMANI

Student in an Organized Health Care Education/Training Program

2500 GRANT RD
MOUNTAIN VIEW, CA 94040

Santa Clara County (650) 940-7000

KELLEY DAVIS MS, RD

Dietitian, Registered

2500 GRANT RD, LPCH-4C
MOUNTAIN VIEW, CA 94040

Santa Clara County (650) 988-4111

TROY THOAI LAM MD

Internal Medicine

2500 GRANT RD
MOUNTAIN VIEW, CA 94040

Santa Clara County (650) 374-0001

MAX LEE

Student in an Organized Health Care Education/Training Program

2500 GRANT RD
MOUNTAIN VIEW, CA 94040

Santa Clara County (650) 940-7000

MS. TOVAH SHOSHANA KROKOSZYNSKI PSYD

Counselor (Mental Health)

2500 GRANT RD
MOUNTAIN VIEW, CA 94040

Santa Clara County (650) 988-3255

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 Gregory Kato's NPI number?

The NPI number for Gregory Kato is 1104924760. It was assigned to this individual provider in the NPPES registry on September 20, 2006.

Where is Gregory Kato located?

Gregory Kato practices at 2500 Grant Rd 2nd Floor, Suite C-D, Mountain View, CA 94040. The listed phone number is (408) 739-6000.

What is Gregory Kato's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Gregory Kato enrolled in Medicare?

Yes. Gregory Kato is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Gregory Kato's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Kato reassigns Medicare benefits to 2 organizations: County Of Santa Clara (Mountain View, CA) and Sutter Bay Medical Foundation (Palo Alto, 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 Gregory Kato'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 Gregory Kato was last updated on May 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months 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.