What is Gary Mason's NPI number?

Gary Mason's National Provider Identifier (NPI) is 1689747735, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Gary Mason's specialty?

Gary Mason is listed in the NPPES registry with a primary specialty of Otolaryngology Physician (Allopathic & Osteopathic Physicians).

Where is Gary Mason located?

Gary Mason's practice location on file with NPPES is 11355 Pembrooke Square, Waldorf, MD 20603.

What is Gary Mason's phone number?

The practice phone number listed in the NPPES registry for Gary Mason is (301) 645-4419.

Is Gary Mason's NPI active?

Yes — Gary Mason's NPI (1689747735) is active in the NPPES registry as of the last update on 2007-07-08.

IndividualActive

Gary Mason, MD

NPI 1689747735 · Otolaryngology Physician · Waldorf, MD

Gary Mason, MD is a Otolaryngology Physician provider in Waldorf, MD (NPI 1689747735).

Provider details

NPI number: 1689747735
Entity type: Individual
Primary specialty: Otolaryngology PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: D0020369 (MD)

Specialties & taxonomies

Otolaryngology PhysicianPrimary207Y00000XLicense D0020369 (MD)
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

11355 Pembrooke Square

Suite 108

Waldorf, MD 20603

Phone: (301) 645-4419

Fax: (301) 645-7006

Approximate (ZIP-level) locationGet directions

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Mailing address