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Robert W.H. Mason, M.D.

Retina Specialist (Ophthalmology) Physician in Nashville, TN · enumerated 2006 · practices at Heikki E Kostamaa MD PC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1124077359

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Registry record

Entity type Individual (Type 1)
Name Robert W.H. Mason
Credential M.D.
Sex Male
Practice address 28 White Bridge Pike, Ste. 208, Nashville, TN, 37205
Phone (615) 327-2001
Fax (615) 234-2015
Enumeration date May 6, 2006
Last updated in NPPES Sep 30, 2025

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License ME118634 (FL) Secondary
207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 304969 (LA) Secondary
207WX0107X Retina Specialist (Ophthalmology) Physician Allopathic & Osteopathic Physicians · License 65583 (TN) Primary
207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 65583 (TN) Secondary
207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 28562 (AL) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
2443399 Medicaid LA -

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Robert Mason?
Robert Mason is registered in NPPES with the primary taxonomy of Retina Specialist (Ophthalmology) Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-30.