WILLIAM H JOHNSTON (MD) – Family Medicine Physician, NPI 1427017789

WILLIAM H JOHNSTON (MD) is a healthcare provider. based in Wausau, Wisconsin. specializing in FAMILY PRACTICE. They hold the professional credentials MD. They hold a License No. 48123 (WI). The NPI Number for WILLIAM H JOHNSTON (MD) is 1427017789

Main info

Male
23 Years Of Experience
Accepts Medicare Assignment
Name
WILLIAM H JOHNSTON (MD)
NPI
1427017789
Phone
(715) 847-2304
Address
3000 WESTHILL DR
Enumeration Date
23 March 2006
Last Update Date
8 July 2007

Doctor Profile

Medical School Name
UNIVERSITY OF CALIFORNIA, DAVIS SCHOOL OF MEDICINE
Secondary Phone
7152415400
Graduation Year
2003 (23 years ago)
PAC ID
3577566223
Group Practice PAC ID
1052223625
Professional Enrollment ID
I20060817000631
Address ID
WI544764139WE4005XDRXX400
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

3,047 FAMILY PRACTICE in WI

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Provider Addresses for WILLIAM H JOHNSTON (MD)

  • Wausau Oral Surgery & Dental Implant Center, S.C., 3000, Westhill Drive, Wausau, Marathon County, Wisconsin, 54401, United States

    SUITE 303

    WAUSAU, WI 544013795

    Phone: (715) 847-2304

    Type: Mailing

  • Old Highway 51, Mosinee, Marathon County, Wisconsin, 54455, United States

    MOSINEE, WI 54455

    Phone: (715) 355-4040

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 6 Open Payments records for all available years, with a total value of $475.

Total Amount is formed as General ($475) + Research ($0) + Ownership ($0) = $475.

Last reported payment date: 2024-09-03 • Largest payer in this snapshot: Boehringer Ingelheim Pharmaceuticals, Inc. ($220).

Total Amount

$475

General + Research + Ownership

Payments

6

Total payment records

General Amount

$475

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2024-09-03

Latest reported date

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: 2006-08-17

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
I20060817000631IFamily PracticeWITBD

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
36415Insertion of needle into vein for collection of blood sample826401$0
80053Blood test, comprehensive group of blood chemicals285234$0
80048Blood test, basic group of blood chemicals (calcium, total)201140$0
99213Established patient office or other outpatient visit, 20-29 minutes192129$0
83036Hemoglobin a1c level170109$0
View full utilization report →

Insurance plans in this area (ZIP 54401)

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Provider's Procedures

WILLIAM H JOHNSTON (MD) performs procedures in FAMILY PRACTICE. See the list of HCPCS codes below.
SpecialtyPractice State
HCPCS Code
Description
Service Count
Beneficiary Count
FAMILY MEDICINEWI83036Hemoglobin A1C level8251

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: 1052223625View full group profile
NameSpecialtyState
Nurse PractitionerWI
O B S T E T R I C S/ G Y N E C O L O G YWI
Nurse PractitionerIL
Physician AssistantWI
Nurse PractitionerWI
-NC
-WI
N E U R O L O G YIL
-PA
-WI

Reviews

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Frequently asked questions

Is there an official ID for WILLIAM H JOHNSTON (MD) in U.S. healthcare records?
The official identifier for WILLIAM H JOHNSTON (MD) is NPI 1427017789.
Would WILLIAM H JOHNSTON (MD) appear as active to a payer?
You can treat WILLIAM H JOHNSTON (MD) as active for directory purposes; confirm clinical privileges separately.
What expertise is attributed to WILLIAM H JOHNSTON (MD)?
WILLIAM H JOHNSTON (MD)'s specialty line reads Family Medicine Physician. Clinical services aligned with this taxonomy classification.
Is WILLIAM H JOHNSTON (MD) associated with Wausau?
Public fields place WILLIAM H JOHNSTON (MD) around Wausau, Wisconsin. Always confirm the exact site before visiting.
Can I trust this NPI listing for WILLIAM H JOHNSTON (MD)?
The listing is sourced from the national NPI registry. If something looks off, compare with NPPES and the clinic's website.

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