1. Home
  2. Directory
  3. Idaho
  4. Hayden
  5. Internal Medicine
  6. NPI Profile

SHERWIN S. FOSTER M.D.
NPI 1720074990
Internal Medicine - Nephrology in Hayden, ID

Active since September 23, 2005PECOS EnrolledAccepts Medicare Assignment
94.91/100
CMS Quality Rating
1986 W HAYDEN AVE, HAYDEN, ID 83835(208) 762-7760(208) 762-7740 Get Directions Write a Review

NPPES record last updated: June 16, 2021. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Sherwin S. Foster M.d. NPPES

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

SHERWIN S. FOSTER M.D. (NPI 1720074990) is an individual nephrology provider in Hayden, Idaho, licensed in Idaho (M-10094) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS, is affiliated with Kootenai Health, and is a graduate of Other (1994).

NPPES Registry Identity

NPI1720074990
Entity TypeIndividualMale
Primary Taxonomy207RN0300X
Provider Legal NameSHERWIN S. FOSTERCredential: M.D.
Location Address1986 W HAYDEN AVEHayden, ID 83835-7412
Mailing Address1986 W Hayden AveHayden, ID 83835-7412 · (208) 762-7760 · Fax (208) 762-7740
Phone(208) 762-7760
Fax(208) 762-7740
Sole ProprietorNo
Medical School CMSOtherGraduated 1994
Enumeration DateSeptember 23, 2005
Last NPPES UpdateJune 16, 2021
NPPES CertifiedJune 16, 2021
✔ NPI 1720074990 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
Licenses✔ Licensed in ID · M-10094✔ Licensed in WA · MD00049028
Definition

An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

1986 W HAYDEN AVE, Hayden, ID 83835
Open in Google Maps ↗

Other Identifiers 6

Medicaid8497588WA
Other1370136Medicare Group Ptan
Medicaid7144785WA
Medicaid8080036ID
Other11003341Medicare Ptan
Medicaid8078889ID

Accepted Insurance

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

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Sherwin S. Foster M.d. 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 ID9335121714
PECOS Enrollment IDI20071130000417, I20080924000265
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.

Areas of Expertise CMS Part B claims 6

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 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.
4,155 services494 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
306 services275 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
228 services87 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.
226 services201 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.
123 services114 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.
13 services13 patients

Hospital Affiliations CMS Care Compare 5

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

Kootenai Health

Acute Care Hospitals · Coeur D'alene, ID
4/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number130049
Location2003 Kootenai Health WayCoeur D'alene, ID 83814 · Kootenai County
Emergency services Birthing friendly

Northwest Specialty Hospital

Acute Care Hospitals · Post Falls, ID
OwnershipProprietary
CMS Certification Number130066
Location1593 East Polston AvenuePost Falls, ID 83854 · Kootenai County

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

Prov Sacred Hrt Med Ctr & Childs Hosp.

Acute Care Hospitals · Spokane, WA
3/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number500054
Location101 West 8th AvenueSpokane, WA 99204 · Spokane County
Emergency services Birthing friendly

Multicare Valley Hospital

Acute Care Hospitals · Spokane, WA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number500119
Location12606 East Mission AvenueSpokane, WA 99216 · Spokane County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 83835 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

94.91/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality87.83
Promoting Interoperability100
Improvement Activities40

Referred Medical Equipment & Supplies CMS DME claims 11

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

Walker, folding, wheeled, adjustable or fixed height E0143
DME-Other DME · category DE000N
2 suppliers20 claims20 services$57.31 avg. paid by Medicare
Hospital bed, semi-electric (head and foot adjustment), with any type side rails, without mattress E0261
DME-Hospital Beds · category DB000N
1 supplier21 claims21 services$54.10 avg. paid by Medicare
Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
11 suppliers79 claims79 services$24.08 avg. paid by Medicare
Nebulizer, with compressor E0570
DME-Other DME · category DE000N
3 suppliers14 claims14 services$5.96 avg. paid by Medicare
Residual limb support system for wheelchair, any type E1020
DME-Wheelchairs · category DD021N
3 suppliers49 claims49 services$15.92 avg. paid by Medicare
Wheelchair accessory, manual swingaway, retractable or removable mounting hardware for joystick, other control interface or positioning accessory E1028
DME-Wheelchairs · category DD021N
2 suppliers12 claims12 services$5.85 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 3

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

SHAUN K JOSHI MD
Internal Medicine (Nephrology)
1986 W HAYDEN AVE
HAYDEN, ID 83835
Kootenai County (208) 762-7760
ETHOS PROGRESSIVE CARE
Family Medicine
1986 W HAYDEN AVE
HAYDEN, ID 83835
Kootenai County (208) 666-0909
LAURA K. BURGESON PA-C
Physician Assistant
1986 W HAYDEN AVE
HAYDEN, ID 83835
Kootenai County (208) 762-7760

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 Sherwin Foster's NPI number?

The NPI number for Sherwin Foster is 1720074990. It was assigned to this individual provider in the NPPES registry on September 23, 2005.

Where is Sherwin Foster located?

Sherwin Foster practices at 1986 W Hayden Ave, Hayden, ID 83835. The listed phone number is (208) 762-7760.

What is Sherwin Foster's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Sherwin Foster enrolled in Medicare?

Yes. Sherwin Foster 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.

What insurance does Sherwin Foster accept?

Health plans from PacificSource Health Plans and Providence Health Plan list Sherwin Foster 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 Sherwin Foster affiliated with any hospitals?

According to CMS data, Sherwin Foster is affiliated with Kootenai Health, Northwest Specialty Hospital, Bonner General Hospital, Prov Sacred Hrt Med Ctr & Childs Hosp. and Multicare Valley Hospital.

When was this NPI record last updated?

The NPPES record for Sherwin Foster was last updated on June 16, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.