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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. RAYMOND BYUN
NPI 1578545950
Internal Medicine - Infectious Disease in Mather, CA

Active since November 18, 2005PECOS Enrolled
10535 HOSPITAL WAY, MATHER, CA 95655(916) 843-7031 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Raymond Byun NPPES

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

DR. RAYMOND BYUN (NPI 1578545950) is an individual infectious disease provider in Mather, California, licensed in California (A75882) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1578545950
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameDR. RAYMOND BYUN
Location Address10535 HOSPITAL WAYMather, CA 95655-4200
Mailing Address10535 Hospital WayMather, CA 95655-4200 · (916) 843-7031
Phone(916) 843-7031
Sole ProprietorNo
Enumeration DateNovember 18, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1578545950 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in CA · A75882
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
10535 HOSPITAL WAY, Mather, CA 95655
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Raymond Byun is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95655 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
$137.20 typical visit price
range $60.44 – $180.85
Typical copayment $34.30 (range $15.11 – $45.21)
Most-billed visit code 99204
Established Patient
$105.95 typical visit price
range $19.88 – $148.15
Typical copayment $26.48 (range $4.97 – $37.03)
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.

ALAYNA HUYNH NGUYEN
Pharmacist
10535 HOSPITAL WAY
MATHER, CA 95655
Sacramento County (916) 843-7000
MS. JANE CHAN RPH
Pharmacist
10535 HOSPITAL WAY
MATHER, CA 95655
Sacramento County (916) 366-5321
DR. PATRICIA L. DALTON M.D.
Specialist
10535 HOSPITAL WAY, DEPT. OF VA SACRAMENTO MEDICAL CENTER
MATHER, CA 95655
Sacramento County (916) 843-7000
SHIN SHAN CHO
Dietitian, Registered
10535 HOSPITAL WAY
MATHER, CA 95655
Sacramento County (916) 843-9022
BRENDA JACKSON LMFT
Marriage & Family Therapist
10535 HOSPITAL WAY
MATHER, CA 95655
Sacramento County (916) 843-2918
JEFFREY JON METER MD
Orthopaedic Surgery (Orthopaedic Surgery of the Spine)
10535 HOSPITAL WAY
MATHER, CA 95655
Sacramento County (916) 843-7324
DR. DAVID SIEGEL M.D.
Internal Medicine
10535 HOSPITAL WAY
MATHER, CA 95655
Sacramento County (916) 843-7096
ERICKA RAMIREZ-SOLIS PH.D.
Psychologist (Clinical)
10535 HOSPITAL WAY
MATHER, CA 95655
Sacramento County (800) 382-8387

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 Raymond Byun's NPI number?

The NPI number for Raymond Byun is 1578545950. It was assigned to this individual provider in the NPPES registry on November 18, 2005.

Where is Raymond Byun located?

Raymond Byun practices at 10535 Hospital Way, Mather, CA 95655. The listed phone number is (916) 843-7031.

What is Raymond Byun's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Raymond Byun enrolled in Medicare?

Yes. Raymond Byun is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Raymond Byun was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 days 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.