Robert & William Hass Optometrists Professional Corp
NPI 1396859773 · Optometrist · Owosso, MI
Enrolled with Medicare as Dme Supplier - Physician - Optometrist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert & William Hass Optometrists Professional Corp is a Optometrist organization in Owosso, MI (NPI 1396859773).
Provider details
- NPI number
- 1396859773
- Entity type
- Organization
- Primary specialty
- OptometristEye and Vision Services Providers
- Organization subpart
- No
- Authorized official
- William Hass, President(989) 725-5330
- License
- 4901002552 (MI)
Specialties & taxonomies
Eye and Vision Services Providers
Suppliers
Suppliers
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2006-08-19
- Last updated
- 2017-10-24
Frequently asked questions
- What is Robert & William Hass Optometrists Professional Corp's NPI number?
- Robert & William Hass Optometrists Professional Corp's National Provider Identifier (NPI) is 1396859773, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Robert & William Hass Optometrists Professional Corp?
- Robert & William Hass Optometrists Professional Corp is classified in the NPPES registry as Optometrist (Eye and Vision Services Providers).
- Where is Robert & William Hass Optometrists Professional Corp located?
- Robert & William Hass Optometrists Professional Corp's practice location on file with NPPES is 120 N Hickory St, Owosso, MI 48867-3016.
- What is Robert & William Hass Optometrists Professional Corp's phone number?
- The practice phone number listed in the NPPES registry for Robert & William Hass Optometrists Professional Corp is (989) 725-5330.
- Does Robert & William Hass Optometrists Professional Corp accept Medicare?
- Robert & William Hass Optometrists Professional Corp is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Robert & William Hass Optometrists Professional Corp?
- The authorized official listed on Robert & William Hass Optometrists Professional Corp's NPPES record is William Hass, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Robert & William Hass Optometrists Professional Corp's NPI active?
- Yes — Robert & William Hass Optometrists Professional Corp's NPI (1396859773) is active in the NPPES registry as of the last update on 2017-10-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.