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Hematology/Oncology

Richard M. Guy, MD

Sees patients in Roseville, CA · California

Summary

Richard M. Guy, MD (Hematology/Oncology) is enrolled with Medicare at 1 practice location in Roseville, CA. NPI 1578545190. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

Call(916) 784‑4000 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Richard M. Guy, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

1Practice location
Hematology/OncologyPrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
27Years since medical school (graduated 1999)
University Of California, Geffen School Of MedicineMedical school
MaleGender (as listed)
Permanente Medical Group IncGroup practice

Quick answers

Where does Richard M. Guy see patients?
Medicare's clinician data lists 1 practice location in Roseville, CA. Call before your visit to confirm the address.
What is Richard M. Guy's specialty?
Medicare lists Hematology/Oncology as the primary specialty, and also Internal Medicine.
Does Richard M. Guy accept Medicare assignment?
Yes. Medicare's clinician data says Richard M. Guy accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does Richard M. Guy offer telehealth?
Medicare's clinician data says Richard M. Guy offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Richard M. Guy?
(916) 784-4000, as listed in official Medicare / NPI Registry data.
What is Richard M. Guy's NPI number?
1578545190. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Richard M. Guy is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Richard M. Guy as a member of this group (CMS data updated 2026-10-02).

  • Permanente Medical Group Inc10,996 clinicians in the group

Specialties

Find other Hematology/Oncology doctors in California →

Other hematologist-oncologists in Roseville

Clinicians with the same Medicare primary specialty in Roseville, CA — not a recommendation.

All hematologist-oncologists in Roseville →

Clinician information

CredentialMD
Medical schoolUniversity Of California, Geffen School Of Medicine
Graduation year1999
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1578545190
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians