DR. WILLIAM R FLEMING (M.D.) – Emergency Medicine Physician, NPI 1023052933

DR. WILLIAM R FLEMING (M.D.) is a healthcare provider. based in Prescott, Arizona. specializing in EMERGENCY MEDICINE. They hold the professional credentials M.D.. They hold a License No. 22386 (AZ). The NPI Number for DR. WILLIAM R FLEMING (M.D.) is 1023052933

Main info

Male
37 Years Of Experience
Accepts Medicare Assignment
Name
DR. WILLIAM R FLEMING (M.D.)
NPI
1023052933
Phone
(928) 445-4860
Address
500 N US HIGHWAY 89
Enumeration Date
15 June 2006
Last Update Date
18 August 2015

Doctor Profile

Medical School Name
OTHER
Secondary Phone
9282894691
Graduation Year
1989 (37 years ago)
PAC ID
4082663539
Group Practice PAC ID
8628988409
Professional Enrollment ID
I20240617000706
Address ID
AZ860472735WI1501XAVEX400
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

1,181 EMERGENCY MEDICINE in AZ

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Provider Addresses for DR. WILLIAM R FLEMING (M.D.)

  • Prescott–Ash Fork Highway, Prescott, Yavapai County, Arizona, 86313, United States

    NORTHERN ARIZONA VA HCS

    PRESCOTT, AZ 86313

    Phone: (928) 445-4860

    Fax: (928) 776-6147

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

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: 2024-06-17

PECOS data refreshed: 2026-06-15

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking 2 Medicare enrollment records; no due dates published yet.

Enrollment records

2

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
I20070202000209IFamily PracticeTXTBD
I20240617000706IEmergency MedicineAZTBD

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
99213Established patient office or other outpatient visit, 20-29 minutes117107$0
80053Blood test, comprehensive group of blood chemicals6761$0
J2405Injection, ondansetron hydrochloride, per 1 mg6414$0
83735Magnesium level6258$0
81001Manual urinalysis test with examination using microscope, automated3835$0
View full utilization report →

Insurance plans in this area (ZIP 86313)

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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: 8628988409View full group profile
NameSpecialtyState
Family PracticeAZ
Family PracticeOH
O B S T E T R I C S/ G Y N E C O L O G YAZ
Nurse PractitionerAZ
Family PracticeAZ
Nurse PractitionerAZ
Physician AssistantAZ
P O D I A T R YAZ
Family Practice, Emergency Medicine, Family PracticeAZ
Physician AssistantAZ

Reviews

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Frequently asked questions

How do payers reference DR. WILLIAM R FLEMING (M.D.)?
For DR. WILLIAM R FLEMING (M.D.), use NPI 1023052933 as the unique 10-digit identifier.
Is DR. WILLIAM R FLEMING (M.D.) shown as active in public data?
Registry records indicate DR. WILLIAM R FLEMING (M.D.) maintains an active NPI.
What kind of doctor is DR. WILLIAM R FLEMING (M.D.)?
DR. WILLIAM R FLEMING (M.D.) is associated with Emergency Medicine Physician in the directory — Clinical services aligned with this taxonomy classification.
Is DR. WILLIAM R FLEMING (M.D.) associated with Prescott?
Public fields place DR. WILLIAM R FLEMING (M.D.) around Prescott, Arizona. Always confirm the exact site before visiting.
When was this NPI issued?
Enumeration for DR. WILLIAM R FLEMING (M.D.) is noted as June 15, 2006 where the registry provides it.

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