DR. WILLIAM PAUL DIEHL IV D.O.
NPI 1275038093
Internal Medicine in Bonners Ferry, ID

Q: What is William Diehl's NPI number?

The NPI number for William Diehl is 1275038093. It was assigned to this individual provider in the NPPES registry on March 25, 2018.

Q: What is William Diehl's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for William Diehl was last updated on January 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since March 25, 2018PECOS EnrolledAccepts Medicare Assignment

6640 KANIKSU ST, BONNERS FERRY, ID 83805(208) 267-3141 Get Directions Write a Review

NPPES record last updated: January 6, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jan 6, 2026, Oct 8, 2025, Dec 28, 2021 and 2 more (5 updates tracked since 2018).

On this page

About Dr. William Paul Diehl Iv D.o. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM PAUL DIEHL IV D.O. (NPI 1275038093) is an individual internal medicine provider in Bonners Ferry, Idaho, licensed in Idaho (O-1461) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS, is affiliated with Boundary Community Hospital, and maintains a secondary practice location in Coeur D Alene.

NPPES Registry Identity

NPI1275038093

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. WILLIAM PAUL DIEHL IVCredential: D.O.

Location Address6640 KANIKSU STBonners Ferry, ID 83805-7532

Mailing Address6640 Kaniksu StBonners Ferry, ID 83805-7532 · (208) 267-3141

Phone(208) 267-3141

Sole ProprietorNo

Medical School CMSOtherGraduated 2018

Enumeration DateMarch 25, 2018

Last NPPES UpdateJanuary 6, 20265 updates tracked since enumeration

NPPES CertifiedJanuary 6, 2026

✔ NPI 1275038093 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in ID · O-1461

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedHospitalistTaxonomy 208M00000X · License O-1461 (ID)

6640 KANIKSU ST, Bonners Ferry, ID 83805

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Secondary Practice Location 1

Location 12003 Kootenai Health WayCoeur D Alene, ID 83814-6051 · Phone (208) 625-6900 · Fax (208) 625-6910

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Molina Healthcare, PacificSource Health Plans, Providence Health Plan and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. William Paul Diehl Iv D.o. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2365790797

PECOS Enrollment IDI20210524002866

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show William Diehl reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Boundary Community Hospital

0.1 mi

Critical Access

6640 KANIKSU ST
Bonners Ferry, ID 83805

Reassigned Medicare billing, Idaho enrollment
Also billed through NPI 1679621098 (Idaho)
69 clinicians in this Medicare group

NPI 1801896683 (208) 267-3141

Diehl Internal Medicine

0.1 mi

Internal Medicine

6640 KANIKSU ST
Bonners Ferry, ID 83805

Reassigned Medicare billing, Idaho enrollment

NPI 1396489696 (540) 454-1848

Bonner General Hospital, Inc

31 mi

Sports Medicine

606 N 3RD AVE STE 201
Sandpoint, ID 83864

Reassigned Medicare billing, Idaho enrollment
Also billed through NPI 1154563963 (Idaho)
75 clinicians in this Medicare group

NPI 1982060984 (208) 263-8597

Internal Medicine Associates, P.A.

32 mi

Internal Medicine

102 S EUCLID AVE STE 202
Sandpoint, ID 83864

Reassigned Medicare billing, Idaho enrollment
6 clinicians in this Medicare group

NPI 1154361988 (208) 263-6876

Kootenai Health, Inc.

73 mi

Psychiatry

2003 KOOTENAI HEALTH WAY
Coeur D Alene, ID 83814

Reassigned Medicare billing, Idaho enrollment
472 clinicians in this Medicare group

NPI 1174661151 (208) 625-4000

Rural Physicians Group-Pannu PLLC

844 mi

Hospitalist

5575 DTC PKWY STE 225
Greenwood Village, CO 80111

Reassigned Medicare billing, Wyoming enrollment
44 clinicians in this Medicare group

NPI 1891236584 (303) 390-1924

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 14

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

55 services31 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

42 services26 patients

Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more 99308

A follow-up nursing facility visit per day is a daily check-up service provided by healthcare professionals. It lasts around 15 minutes and involves assessing your health status, monitoring your recovery progress, and addressing any concerns you may have about your health or treatment.

38 services27 patients

Hospital discharge day management, more than 30 minutes 99239

Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.

30 services28 patients

Hospital discharge day management, 30 minutes or less 99238

Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.

28 services27 patients

Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes 99307

A follow-up nursing facility visit per day typically lasts about 10 minutes. This service involves a healthcare professional checking on your health status, answering any questions you may have, and monitoring your progress. This routine check ensures your recovery is on track and any concerns are addressed promptly.

28 services15 patients

Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes 99350

An established patient home visit is a service where a healthcare professional visits a patient's home for a check-up or treatment. The visit typically lasts for about an hour. This service is especially beneficial for patients who may have difficulty traveling to a healthcare facility.

27 services12 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

21 services21 patients

Nursing facility discharge management, more than 30 minutes 99316

Nursing facility discharge management over 30 minutes is a comprehensive process where a healthcare team prepares you for leaving the facility. It involves creating a tailored plan, coordinating care, and ensuring a smooth transition to your next care setting.

20 services18 patients

Initial nursing facility care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99304

An initial nursing facility visit is a daily check-up to monitor your health status. This service, lasting typically 25 minutes, involves a nurse assessing your overall wellbeing, discussing concerns, and updating your care plan as needed.

19 services19 patients

Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes 99305

An initial nursing facility visit per day is a service where a healthcare professional spends about 35 minutes assessing a patient's health status. This includes reviewing medical history, conducting a physical exam, and developing a care plan based on the patient's needs.

16 services14 patients

Nursing facility discharge day management, 30 minutes or less 99315

Nursing facility discharge day management involves organizing your transition from the nursing facility to your home or another facility. This service, taking 30 minutes or less, includes finalizing medical instructions, arranging follow-up care, and answering any questions.

14 services14 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

12 services12 patients

Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221

Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.

11 services11 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Boundary Community Hospital

Critical Access Hospitals · Bonners Ferry, ID

OwnershipVoluntary non-profit - Other

CMS Certification Number131301

Location6640 Kaniksu StreetBonners Ferry, ID 83805 · Boundary County

Emergency services

Bonner General Hospital

Critical Access Hospitals · Sandpoint, ID

OwnershipVoluntary non-profit - Private

CMS Certification Number131328

Location520 North Third AvenueSandpoint, ID 83864 · Bonner County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 83805 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$121.27 typical visit price

range $52.44 – $160.17

Typical copayment $30.31 (range $13.11 – $40.04)

Most-billed visit code 99204

Established Patient

$93.26 typical visit price

range $16.68 – $130.93

Typical copayment $23.31 (range $4.17 – $32.73)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

2 suppliers18 claims18 services$20.07 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

2 suppliers18 claims18 services$112.52 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

RILEY DIEHL DO

Internal Medicine

6640 KANIKSU ST
BONNERS FERRY, ID 83805

Boundary County (208) 267-3141

MARK PRUITT D.O.

Emergency Medicine

6640 KANIKSU ST
BONNERS FERRY, ID 83805

Boundary County (208) 267-3141

IAN REID ROBINSON

Registered Nurse (Gerontology)

6640 KANIKSU ST
BONNERS FERRY, ID 83805

Boundary County (541) 908-8671

BOUNDARY COMMUNITY HOSPITAL

Pharmacy (Long Term Care Pharmacy)

6640 KANIKSU ST
BONNERS FERRY, ID 83805

Boundary County (208) 267-4850

BOUNDARY COMMUNITY HOSPITAL

Skilled Nursing Facility

6640 KANIKSU ST
BONNERS FERRY, ID 83805

Boundary County (208) 267-4850

MATTHEW WALLACE JOHNSON DO

Emergency Medicine

6640 KANIKSU ST
BONNERS FERRY, ID 83805

Boundary County (208) 267-3141

ROBERT YOST MD

Emergency Medicine

6640 KANIKSU ST, BOUNDAR COMMUNITY HOSPITAL
BONNERS FERRY, ID 83805

Boundary County (208) 267-3141

MRS. MELANIE HELMS RN

Registered Nurse (Medical-Surgical)

6640 KANIKSU ST
BONNERS FERRY, ID 83805

Boundary County (208) 267-3141

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Diehl's NPI number?

The NPI number for William Diehl is 1275038093. It was assigned to this individual provider in the NPPES registry on March 25, 2018.

Where is William Diehl located?

William Diehl practices at 6640 Kaniksu St, Bonners Ferry, ID 83805. The listed phone number is (208) 267-3141.

What is William Diehl's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is William Diehl enrolled in Medicare?

Yes. William Diehl is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for William Diehl's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Diehl reassigns Medicare benefits to 6 organizations: Boundary Community Hospital (Bonners Ferry, ID), Diehl Internal Medicine (Bonners Ferry, ID), Bonner General Hospital, Inc (Sandpoint, ID), Internal Medicine Associates, P.A. (Sandpoint, ID), Kootenai Health, Inc. (Coeur D Alene, ID) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Diehl's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does William Diehl accept?

Health plans from Molina Healthcare, PacificSource Health Plans, Providence Health Plan and Select Health list William Diehl as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is William Diehl affiliated with any hospitals?

According to CMS data, William Diehl is affiliated with Boundary Community Hospital and Bonner General Hospital.

When was this NPI record last updated?

The NPPES record for William Diehl was last updated on January 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.