What is Michael Lyon's NPI number?

Michael Lyon's National Provider Identifier (NPI) is 1255357968, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Michael Lyon's specialty?

Michael Lyon is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).

Where is Michael Lyon located?

Michael Lyon's practice location on file with NPPES is 4951 Arroyo Rd, Livermore, CA 94550-9650.

What is Michael Lyon's phone number?

The practice phone number listed in the NPPES registry for Michael Lyon is (650) 493-5000.

Is Michael Lyon's NPI active?

Yes — Michael Lyon's NPI (1255357968) is active in the NPPES registry as of the last update on 2007-07-09.

IndividualActive

Michael Lyon, M.D.

NPI 1255357968 · Rheumatology Physician · Livermore, CA

Michael Lyon, M.D. is a Rheumatology Physician provider in Livermore, CA (NPI 1255357968).

Provider details

NPI number: 1255357968
Entity type: Individual
Primary specialty: Rheumatology PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: Yes
License: G47269 (CA)

Specialties & taxonomies

Rheumatology PhysicianPrimary207RR0500XLicense G47269 (CA)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(91/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
19 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

4951 Arroyo Rd

Vamc 111(ld)

Livermore, CA 94550-9650

Phone: (650) 493-5000

Fax: (925) 449-6522

Street-level locationGet directions

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Mailing address