Hollis D. Day, MD
Geriatric Medicine (Internal Medicine) Physician · Shapiro 9 Suite A, MA
Hollis D. Day, MD is a geriatric medicine (internal medicine) physician with a practice address in Shapiro 9 Suite A, Massachusetts, and NPI 1902878465, issued on Feb 7, 2006. Check the license (Massachusetts 265302, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Hollis D. Day
- Credential
- MD
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- 265302 MA
Self-reported in NPPES; status is on the state search - Practice location
- 725 Albany Street, Shapiro 9 Suite A, MA 02118
- Phone
- (617) 638-6100
- Enumerated
- Feb 7, 2006
- Record last updated
- Nov 6, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (617) 638-6179
- Medicare enrollment
- Enrolled (PECOS I20160121001220); accepts Medicare assignment
- Medical or professional school
- Virginia Commonwealth University, School Of Medicine, 1994
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 225 in Massachusetts → Look up another NPI →
Verify Hollis D. Day in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 265302Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024
2,133 Medicare Part D claims for 137 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 27 claims were for opioids.
Most prescribed
- Amlodipine Besylate147 claims
- Metoprolol Succinate99 claims
- Atorvastatin Calcium96 claims
- Lisinopril89 claims
- Losartan Potassium88 claims
- Diclofenac Sodium62 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
- Evans Medical Foundation IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hollis D. Day among 225 geriatric medicine (internal medicine) physician records in Massachusetts
Hollis D. Day, MD is one of 225 geriatric medicine (internal medicine) physician records with a practice address in Massachusetts. 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 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 44% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1994 · median 2000 among the 119 with a school on file
- Record last updated2015 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in Massachusetts
There are 225 geriatric medicine (internal medicine) physician records in Massachusetts.
All 225 in Massachusetts → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Heidi Auerbach, M.D.Boston, MA 021181306829833
- Erica Bernstein, M.D., PHDBoston, MA 021181083686000
- Lisa Caruso, M.D.Boston, MA 021181316922099
- Eric Hardt, M.D.Boston, MA 021181902882947
- Ellen Harrington Harrington, LICSWBoston, MA 021181851420327
- Won Lee, M.D.Boston, MA 021181124218227
- Sharon Levine, M.D.Boston, MA 021181821075540
- Daniel Oates, M.D.Boston, MA 021181871551531
Common questions
What is Hollis D. Day, MD's NPI number?
Hollis D. Day, MD's National Provider Identifier (NPI) is 1902878465, issued on Feb 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Hollis D. Day, MD located?
The NPPES record lists a practice address at 725 Albany Street, Shapiro 9 Suite A, MA, 02118. Phone: (617) 638-6100. Providers update this record themselves, so call before visiting.
How can I verify Hollis D. Day, MD's license?
NPPES lists Massachusetts license number 265302, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Hollis D. Day, MD prescribe under Medicare Part D?
In 2024, Hollis D. Day, MD had 2,133 Medicare Part D claims for 137 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.