DR. WILLIAM B HASS (OD) – Optometrist, NPI 1972598258

DR. WILLIAM B HASS (OD) is a healthcare provider. based in Chesaning, Michigan. specializing in OPTOMETRY. They hold the professional credentials OD. They hold a License No. 4901002552 (MI). The NPI Number for DR. WILLIAM B HASS (OD) is 1972598258

Main info

Male
50 Years Of Experience
Accepts Medicare Assignment
Name
DR. WILLIAM B HASS (OD)
NPI
1972598258
Phone
(989) 845-3835
Address
1180 W BROAD ST
Enumeration Date
13 September 2005
Last Update Date
30 May 2008

Doctor Profile

Medical School Name
ILLINOIS COLLEGE OF OPTOMETRY AT CHICAGO
Secondary Phone
9897255330
Graduation Year
1976 (50 years ago)
PAC ID
8325134794
Group Practice PAC ID
1850487224
Professional Enrollment ID
I20071016000295
Address ID
MI488673016OW120XXSTXX401
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience54
Completeness75
Years active:20State licenses:1Digital endpointsOther names

1,204 OPTOMETRY in MI

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Provider Addresses for DR. WILLIAM B HASS (OD)

  • 1180, West Broad Street, Chesaning Township, Saginaw County, Michigan, 48616, United States

    CHESANING, MI 486161006

    Phone: (989) 845-3835

    Fax: (989) 845-3982

    Type: Location

  • PO BOX 68

    CHESANING, MI 486160068

    Phone: (989) 845-3835

    Fax: (989) 845-3982

    Type: Mailing

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 1 Open Payments records for all available years, with a total value of $98.

Total Amount is formed as General ($98) + Research ($0) + Ownership ($0) = $98.

Last reported payment date: 2024-07-08 • Largest payer in this snapshot: BIOTISSUE HOLDINGS INC. ($98).

Total Amount

$98

General + Research + Ownership

Payments

1

Total payment records

General Amount

$98

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2024-07-08

Latest reported date

Top Companies

Largest payers in this snapshot

CompanyAmount
BIOTISSUE HOLDINGS INC.$98
View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2007-10-16

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20071016000295IOptometryMITBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
92014Established patient complete exam of visual system9292$0
92250Photography of the retina3333$0
99213Established patient office or other outpatient visit, 20-29 minutes2419$0
92004New patient complete exam of visual system1414$0
92134Imaging of retina1414$0
View full utilization report →

Insurance plans in this area (ZIP 48616)

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Provider's Procedures

DR. WILLIAM B HASS (OD) performs procedures in OPTOMETRY. See the list of HCPCS codes below.
SpecialtyPractice State
HCPCS Code
Description
Service Count
Beneficiary Count
OPTOMETRYMI92012Eye and medical examination for diagnosis and treatment, established patient3933
OPTOMETRYMI92083Measurement of field of vision during daylight conditions5342
OPTOMETRYMI92134Diagnostic imaging of retina2320

Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 1850487224View full group profile
NameSpecialtyState
O P T O M E T R YMI
O P T O M E T R YMI

Reviews

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Frequently asked questions

Is DR. WILLIAM B HASS (OD) listed with a National Provider Identifier?
Yes — DR. WILLIAM B HASS (OD) has NPI 1972598258 on file in the registry.
Active or inactive — what applies to DR. WILLIAM B HASS (OD)?
You should see DR. WILLIAM B HASS (OD) as active in CMS-hosted NPPES data.
What kind of doctor is DR. WILLIAM B HASS (OD)?
DR. WILLIAM B HASS (OD) is associated with Optometrist in the directory — Clinical services aligned with this taxonomy classification.
Is DR. WILLIAM B HASS (OD) associated with Chesaning?
Public fields place DR. WILLIAM B HASS (OD) around Chesaning, Michigan. Always confirm the exact site before visiting.
When was this NPI issued?
Enumeration for DR. WILLIAM B HASS (OD) is noted as September 13, 2005 where the registry provides it.

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