Mathew Boyd Day, M.D.
Internal Medicine Physician · Grand Island, NE
Mathew Boyd Day, M.D. is an internal medicine physician with a practice address in Grand Island, Nebraska, and NPI 1619357191, issued on Jun 1, 2015. Check the license (Nebraska 30968, as entered in NPPES) on the Nebraska Board of Medicine and Surgery; the Medicare figures below come from public CMS files.
- Name
- Mathew Boyd Day
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 30968 NE
Self-reported in NPPES; status is on the state search - Practice location
- 729 N Custer Ave, Grand Island, NE 68803
- Phone
- (308) 382-9266
- Enumerated
- Jun 1, 2015
- Record last updated
- Jan 29, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (308) 382-5290
- Medicare enrollment
- Enrolled (PECOS I20180822002908); accepts Medicare assignment
- Medical or professional school
- University Of Nebraska College Of Medicine, 2015
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 813 in Nebraska → Look up another NPI →
Also registered at 729 N Custer Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- John Cannella, M.D.Internal Medicine Physician1386642379
- Michele Carey, RNAdministrator Registered Nurse1053616698
- David Colan, M.D.Internal Medicine Physician1154329142
Verify Mathew Boyd Day in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNebraska Board of Medicine and Surgery
Search for license 30968Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average internal medicine physician in 2024
370 Medicare Part D claims for 97 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Levothyroxine Sodium34 claims
- Amoxicillin-Clavulanate Potass17 claims
- Furosemide17 claims
- Metoprolol Succinate17 claims
- Potassium Chloride13 claims
- Prednisone12 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
- Chi Health Clinic Specialty LLCGrand Island, NE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mathew Boyd Day among 813 internal medicine physician records in Nebraska
Mathew Boyd Day, M.D. is one of 813 internal medicine physician records with a practice address in Nebraska. 71% 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 49% of them.
- NPI issued2015 · 49% of these records are older, 49% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 51% of these records are
- Graduated2015 · median 2010 among the 414 with a school on file
- Record last updated2019 · 56% 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 Nebraska practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
25 internal medicine physician records list a practice address in Grand Island
They are 25 of the 2,378 NPPES records with a practice address in Grand Island, and 813 internal medicine physician records in Nebraska.
All 813 in Nebraska → Every provider in Grand Island → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Heidi Beckett, M.D.Grand Island, NE 688031831230754
- James Billups, M.D.Grand Island, NE 688031730270455
- Jennifer Brown, M.D.Grand Island, NE 688031477539278
- John Cannella, M.D.Grand Island, NE 688031386642379
- David Colan, M.D.Grand Island, NE 688031154329142
- Ryan Crouch, D.O.Grand Island, NE 688031790724201
- Frederick Echternacht, MDGrand Island, NE 688031821058843
- Moncarm Fouche, M.D.Grand Island, NE 688031821082603
Common questions
What is Mathew Boyd Day, M.D.'s NPI number?
Mathew Boyd Day, M.D.'s National Provider Identifier (NPI) is 1619357191, issued on Jun 1, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Mathew Boyd Day, M.D. located?
The NPPES record lists a practice address at 729 N Custer Ave, Grand Island, NE, 68803. Phone: (308) 382-9266. Providers update this record themselves, so call before visiting.
How can I verify Mathew Boyd Day, M.D.'s license?
NPPES lists Nebraska license number 30968, as entered by the provider. Search the Nebraska Board of Medicine and Surgery at https://www.nebraska.gov/LISSearch/search.cgi. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mathew Boyd Day, M.D. prescribe under Medicare Part D?
In 2024, Mathew Boyd Day, M.D. had 370 Medicare Part D claims for 97 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.