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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MICHAEL MASSARO DO
NPI 1043897481
Internal Medicine in Twin Falls, ID

Active since March 24, 2021PECOS EnrolledAccepts Medicare Assignment
801 POLE LINE RD W, TWIN FALLS, ID 83301(208) 814-4100(208) 814-4908 Get Directions Write a Review

NPPES record last updated: July 1, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Feb 27, 2025, Jun 24, 2024, Mar 24, 2021 (3 updates tracked since 2021).

About Michael Massaro Do NPPES

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

MICHAEL MASSARO DO (NPI 1043897481) is an individual internal medicine provider in Twin Falls, Idaho, licensed in Idaho (7971137) and active in the NPI registry since March 2021. He is enrolled in Medicare PECOS, is affiliated with St Luke's Regional Medical Center, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1043897481
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameMICHAEL MASSAROCredential: DO
Location Address801 POLE LINE RD WTwin Falls, ID 83301-5799
Mailing Address190 E Bannock StBoise, ID 83712-6241
Phone(208) 814-4100
Fax(208) 814-4908
Sole ProprietorNo
Medical School CMSMarian University College Of Osteopathic MedicineGraduated 2021
Enumeration DateMarch 24, 2021
Last NPPES UpdateJuly 1, 20263 updates tracked since enumeration
NPPES CertifiedJuly 1, 2026
✔ NPI 1043897481 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in ID · 7971137✔ Licensed in IN · 02007224A
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.
801 POLE LINE RD W, Twin Falls, ID 83301
Open in Google Maps ↗

Secondary Practice Locations 3

Location 12001 W 86th StIndianapolis, IN 46260-1902 · Phone (317) 338-2345
Location 28414 Naab Rd Ste 100Indianapolis, IN 46260-1972 · Phone (317) 338-7510 · Fax (317) 338-7539
Location 3190 E Bannock StBoise, ID 83712-6241 · Phone (208) 381-5015 · Fax (208) 381-1873

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include 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

Michael Massaro Do 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 ID5294137055
PECOS Enrollment IDI20250307001755
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 5

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.
159 services70 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.
46 services26 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 services28 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.
21 services21 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.
11 services11 patients

Hospital Affiliations CMS Care Compare 3

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

St Luke's Regional Medical Center

Acute Care Hospitals · Boise, ID
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number130006
Location190 East Bannock StreetBoise, ID 83712 · Ada County
Emergency services Birthing friendly

St Luke's Nampa Medical Center

Acute Care Hospitals · Nampa, ID
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number130071
Location9850 West St Lukes DriveNampa, ID 83687 · Canyon County
Emergency services Birthing friendly

St Luke's Mccall

Critical Access Hospitals · Mccall, ID
OwnershipProprietary
CMS Certification Number131312
Location1000 State StreetMccall, ID 83638 · Valley County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 83301 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.

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.

MR. CHET DANSIE CRNA
Nurse Anesthetist, Certified Registered
801 POLE LINE RD W
TWIN FALLS, ID 83301
Twin Falls County (208) 814-1000
SHALYCE ANDERSON
Social Worker
801 POLE LINE RD W
TWIN FALLS, ID 83301
Twin Falls County (208) 670-5214
GINA GRIFFITHS PIPER PHD CCC-SLP
Speech-Language Pathologist
801 POLE LINE RD W
TWIN FALLS, ID 83301
Twin Falls County (541) 381-1100
JOSEPH MURDOCK STROBEL D.O.
Hospitalist
801 POLE LINE RD W
TWIN FALLS, ID 83301
Twin Falls County (208) 814-4100
DANIEL SCOTT JOHNSON
Nurse Anesthetist, Certified Registered
801 POLE LINE RD W
TWIN FALLS, ID 83301
Twin Falls County (208) 734-7362
GARRETT J SASSE
Social Worker (Clinical)
801 POLE LINE RD W
TWIN FALLS, ID 83301
Twin Falls County (208) 814-1000
ALISON KIRKPATRICK OTR
Occupational Therapist
801 POLE LINE RD W
TWIN FALLS, ID 83301
Twin Falls County (562) 234-2903
VALERIA CARDONA LOPEZ CSFA
Specialist/Technologist, Other (Surgical Assistant)
801 POLE LINE RD W
TWIN FALLS, ID 83301
Twin Falls County (208) 814-1000

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 Michael Massaro's NPI number?

The NPI number for Michael Massaro is 1043897481. It was assigned to this individual provider in the NPPES registry on March 24, 2021.

Where is Michael Massaro located?

Michael Massaro practices at 801 Pole Line Rd W, Twin Falls, ID 83301. The listed phone number is (208) 814-4100.

What is Michael Massaro's specialty?

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

Is Michael Massaro enrolled in Medicare?

Yes. Michael Massaro 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 Michael Massaro accept?

Health plans from Providence Health Plan list Michael Massaro 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 Michael Massaro affiliated with any hospitals?

According to CMS data, Michael Massaro is affiliated with St Luke's Regional Medical Center, St Luke's Nampa Medical Center and St Luke's Mccall.

When was this NPI record last updated?

The NPPES record for Michael Massaro was last updated on July 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 40 days 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.