What is William Marsh's NPI number?

William Marsh's National Provider Identifier (NPI) is 1447394168, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is William Marsh's specialty?

William Marsh is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).

Where is William Marsh located?

William Marsh's practice location on file with NPPES is 10350 E Dakota Ave, Denver, CO 80247-1314.

What is William Marsh's phone number?

The practice phone number listed in the NPPES registry for William Marsh is (303) 338-4545.

Is William Marsh's NPI active?

Yes — William Marsh's NPI (1447394168) is active in the NPPES registry as of the last update on 2011-02-28.

IndividualActive

William Marsh, M.D.

NPI 1447394168 · Allergy & Immunology Physician · Denver, CO

William Marsh, M.D. is a Allergy & Immunology Physician provider in Denver, CO (NPI 1447394168).

Provider details

NPI number: 1447394168
Entity type: Individual
Primary specialty: Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: No
License: 24507 (CO)

Specialties & taxonomies

Allergy & Immunology PhysicianPrimary207K00000XLicense 24507 (CO)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(90/100 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

10350 E Dakota Ave

Denver, CO 80247-1314

Phone: (303) 338-4545

Street-level locationGet directions

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Mailing address