Michael T. Massaro
Gastroenterology Physician · Carmichael, CA
Michael T. Massaro is a gastroenterology physician with a practice address in Carmichael, California, and NPI 1558741447, issued on Jun 4, 2015. Check the license (California A172725, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michael T. Massaro
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A172725 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6555 Coyle Ave Ste 390, Carmichael, CA 95608
- Phone
- (916) 536-2596
- Enumerated
- Jun 4, 2015
- Record last updated
- Nov 11, 2024
- Fax
- (916) 536-2498
- Medicare enrollment
- Enrolled (PECOS I20211117000501); accepts Medicare assignment
- Medical or professional school
- University Of Tennessee, Hsc, College Of Medicine, 2015
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 6555 Coyle Ave Ste 390
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Dengel, M.D.Neurology Physician1447391412
- Amanpal Singh, MDGastroenterology Physician1184829749
- Tatyana Yatskiv, PA-CPhysician Assistant1881451805
Verify Michael T. Massaro in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A172725Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% more Medicare Part D claims than the average gastroenterology physician in 2024
994 Medicare Part D claims for 403 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Pantoprazole Sodium224 claims
- Sod Sulf-Potass Sulf-Mag Sulf187 claims
- Omeprazole186 claims
- Nortriptyline Hcl41 claims
- Gavilyte-G38 claims
- Linzess27 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.
The MIPS final score for 2023 (Medicare payment program): 96.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $660.90
25 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Dignity Health Medical FoundationFolsom, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael T. Massaro among 2,140 gastroenterology physician records in California
Michael T. Massaro is one of 2,140 gastroenterology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 85% of them.
- NPI issued2015 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2015 · median 2002 among the 1,538 with a school on file
- Record last updated2024 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Carmichael → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Kuldip Sandhu, MDCarmichael, CA 956081346380359
- David Schneiderman, MDCarmichael, CA 956081407867211
- Amanpal Singh, MDCarmichael, CA 956081184829749
- Nalini Valluru, MBBSCarmichael, CA 956081699087957
- Sidney Yassinger, M.D.Carmichael, CA 956081073654612
- Todd Zimmerman, M.D.Carmichael, CA 956081073654620
- Richard Chun, M.D.Citrus Heights, CA 956101003818055
- Dileep Atluri, M.D.Auburn, CA 956021245444983
Common questions
What is Michael T. Massaro's NPI number?
Michael T. Massaro's National Provider Identifier (NPI) is 1558741447, issued on Jun 4, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Michael T. Massaro located?
The NPPES record lists a practice address at 6555 Coyle Ave Ste 390, Carmichael, CA, 95608. Phone: (916) 536-2596. Providers update this record themselves, so call before visiting.
How can I verify Michael T. Massaro's license?
NPPES lists California license number A172725, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael T. Massaro prescribe under Medicare Part D?
In 2024, Michael T. Massaro had 994 Medicare Part D claims for 403 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Michael T. Massaro's MIPS final score?
The 2023 MIPS final score is 96.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.