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Marsha Onan, M.D.
NPI 1376545186 · Ophthalmology Physician · Austin, TX
Marsha Onan, M.D. is a Ophthalmology Physician provider in Austin, TX (NPI 1376545186).
Provider details
- NPI number
- 1376545186
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- K3623 (TX)
Specialties & taxonomies
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
20 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
11111 Research Blvd
Suite 220
Austin, TX 78759-5264
Phone: (512) 324-6755
Fax: (512) 324-6753
Street-level locationGet directions
Mailing address
1600 W 38th St
Austin, TX 78731-6400
Registry dates
- Enumerated
- 2005-08-11
- Last updated
- 2012-08-16
Frequently asked questions
- What is Marsha Onan's NPI number?
- Marsha Onan's National Provider Identifier (NPI) is 1376545186, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marsha Onan's specialty?
- Marsha Onan is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Marsha Onan located?
- Marsha Onan's practice location on file with NPPES is 11111 Research Blvd, Austin, TX 78759-5264.
- What is Marsha Onan's phone number?
- The practice phone number listed in the NPPES registry for Marsha Onan is (512) 324-6755.
- Is Marsha Onan's NPI active?
- Yes — Marsha Onan's NPI (1376545186) is active in the NPPES registry as of the last update on 2012-08-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.