DR. MICHAEL GERARD LYON M.D.
NPI 1255357968
Internal Medicine - Rheumatology in Livermore, CA

Active since July 14, 2006PECOS Enrolled
4951 ARROYO RD, VAMC 111(LD), LIVERMORE, CA 94550(650) 493-5000(925) 449-6522 Get Directions Write a Review

NPPES record last updated: July 9, 2007. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Dr. Michael Gerard Lyon M.d. NPPES

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

DR. MICHAEL GERARD LYON M.D. (NPI 1255357968) is an individual rheumatology provider in Livermore, California, licensed in California (G47269) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1255357968
Entity TypeIndividualMale
Primary Taxonomy207RR0500X
Provider Legal NameDR. MICHAEL GERARD LYONCredential: M.D.
Location Address4951 ARROYO RD, VAMC 111(LD)Livermore, CA 94550-9650
Mailing Address4951 Arroyo Rd, Vamc 111(ld)Livermore, CA 94550-9650 · (650) 493-5000 · Fax (925) 449-6522
Fax(925) 449-6522
Sole ProprietorYes
Enumeration DateJuly 14, 2006
Last NPPES UpdateJuly 9, 2007
NPI 1255357968 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
License Licensed in CA · G47269
Definition

An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.

4951 ARROYO RD, Livermore, CA 94550

Other Identifiers 2

Medicare UPINVAD000CA
Medicare UPINA01749CA

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. Michael Gerard Lyon M.d. 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 94550 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
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.

Internal Medicine (Infectious Disease)
4951 ARROYO RD, LIVERMORE DIVISION, GENERAL MEDICAL CLINIC
LIVERMORE, CA 94550
Clinical Neuropsychologist
4951 ARROYO RD
LIVERMORE, CA 94550
Specialist
4951 ARROYO RD, VAPAHCS LIVERMORE DIVISION
LIVERMORE, CA 94550
Internal Medicine (Geriatric Medicine)
4951 ARROYO RD
LIVERMORE, CA 94550
Psychologist (Clinical)
4951 ARROYO RD, (116B/LIV)
LIVERMORE, CA 94550
Internal Medicine
4951 ARROYO RD
LIVERMORE, CA 94550
Social Worker
4951 ARROYO RD
LIVERMORE, CA 94550
Internal Medicine
4951 ARROYO RD, LIVERMORE VA
LIVERMORE, CA 94550

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1255357968, enumerated as an "individual" on July 14, 2006.

The provider is located at 4951 ARROYO RD VAMC 111(LD) LIVERMORE, CA 94550 and the phone number is (650) 493-5000.

Internal Medicine with taxonomy code 207RR0500X and a focus in Rheumatology.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.