Michael Massaro, DO
Internal Medicine Physician · Twin Falls, ID
Michael Massaro, DO is an internal medicine physician with a practice address in Twin Falls, Idaho, and NPI 1043897481, issued on Mar 24, 2021. Check the license (Idaho 7971137, as entered in NPPES) on the Idaho Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Michael Massaro
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 7971137 ID
02007224A IN
Self-reported in NPPES; status is on the state search - Practice location
- 801 Pole Line RD W, Twin Falls, ID 83301
- Phone
- (208) 814-4100
- Enumerated
- Mar 24, 2021
- Record last updated
- Jul 1, 2026
- Fax
- (208) 814-4908
- Medicare enrollment
- Enrolled (PECOS I20250307001755); accepts Medicare assignment
- Medical or professional school
- Marian University College Of Osteopathic Medicine, 2021
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 453 in Idaho → Look up another NPI →
Also registered at 801 Pole Line RD W
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sacora Abshire, OTR/LOccupational Therapist1457860975
- Jessica Adamson, MSN, APRN, FNP-CFamily Nurse Practitioner1174240139
- David Allen, MDObstetrics & Gynecology Physician1225045693
- Jaylene AllenEmergency Registered Nurse1447170824
- Kimberlee Almon, M.S., CFY-SLPSpeech-Language Pathologist1164869558
- Katherine Alper, MS, RDN, LDRegistered Dietitian1487309605
Verify Michael Massaro in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIdaho Board of Medicine
Search for license 7971137Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average internal medicine physician in 2024
326 Medicare Part D claims for 67 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium30 claims
- Amlodipine Besylate13 claims
- Furosemide12 claims
- Levothyroxine Sodium12 claims
- Calcitriol11 claims
- Divalproex Sodium Er11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- St Lukes Clinic-Treasure Valley LLCBoise, ID
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Massaro among 453 internal medicine physician records in Idaho
Michael Massaro, DO is one of 453 internal medicine physician records with a practice address in Idaho. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 83% of them.
- NPI issued2021 · 83% of these records are older, 15% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2021 · median 2011 among the 254 with a school on file
- Record last updated2026 · 44% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Idaho practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 internal medicine physician records list a practice address in Twin Falls
They are 19 of the 1,660 NPPES records with a practice address in Twin Falls, and 453 internal medicine physician records in Idaho.
All 453 in Idaho → Every provider in Twin Falls → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- John Baker, M.D.Twin Falls, ID 833011124061262
- Patrick Desmond, M.D.Twin Falls, ID 833011821038282
- Lucie Dimaggio, M.D.Twin Falls, ID 833011336188267
- Matthew Dopp, M.D.Twin Falls, ID 833011255575619
- Warren Dopson, M.D.Twin Falls, ID 833011265472781
- Daryl Ficklin, DOTwin Falls, ID 833011346213303
- Brian Fortuin, M.D.Twin Falls, ID 833011740221191
- John Gibney, M.D.Twin Falls, ID 833011477710838
Common questions
What is Michael Massaro, DO's NPI number?
Michael Massaro, DO's National Provider Identifier (NPI) is 1043897481, issued on Mar 24, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Michael Massaro, DO located?
The NPPES record lists a practice address at 801 Pole Line RD W, Twin Falls, ID, 83301. Phone: (208) 814-4100. Providers update this record themselves, so call before visiting.
How can I verify Michael Massaro, DO's license?
NPPES lists Idaho license number 7971137, as entered by the provider. Search the Idaho Board of Medicine at https://dopl.idaho.gov/bom/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael Massaro, DO prescribe under Medicare Part D?
In 2024, Michael Massaro, DO had 326 Medicare Part D claims for 67 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.