What is Oliver Johnston's NPI number?

Oliver Johnston's National Provider Identifier (NPI) is 1639320955, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Oliver Johnston's specialty?

Oliver Johnston is listed in the NPPES registry with a primary specialty of Urology Physician (Allopathic & Osteopathic Physicians).

Where is Oliver Johnston located?

Oliver Johnston's practice location on file with NPPES is 551 Linn St, Allegan, MI 49010-1595.

What is Oliver Johnston's phone number?

The practice phone number listed in the NPPES registry for Oliver Johnston is (269) 686-5888.

Is Oliver Johnston's NPI active?

Yes — Oliver Johnston's NPI (1639320955) is active in the NPPES registry as of the last update on 2008-12-18.

IndividualActive

Oliver Johnston, MD

NPI 1639320955 · Urology Physician · Allegan, MI

Oliver Johnston, MD is a Urology Physician provider in Allegan, MI (NPI 1639320955).

Provider details

NPI number: 1639320955
Entity type: Individual
Primary specialty: Urology PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: Yes
License: 4301036842 (MI)

Specialties & taxonomies

Urology PhysicianPrimary208800000XLicense 4301036842 (MI)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(86/100 index)

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

Registry tenure38% of score
17 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

551 Linn St

Suite 20

Allegan, MI 49010-1595

Phone: (269) 686-5888

Fax: (269) 686-5865

Street-level locationGet directions

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Mailing address