Steven R. Flier, M.D.
Internal Medicine Physician · Wellesley, MA
Steven R. Flier, M.D. is an internal medicine physician with a practice address in Wellesley, Massachusetts, and NPI 1013905751, issued on Oct 6, 2005. Check the license (Massachusetts 40073, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Steven R. Flier
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 40073 MA
Self-reported in NPPES; status is on the state search - Practice location
- 110 Worcester St, Wellesley, MA 02481
- Phone
- (617) 731-0058
- Enumerated
- Oct 6, 2005
- Record last updated
- Dec 30, 2025
- Fax
- (617) 731-0825
- Medicare enrollment
- Enrolled (PECOS I20050819000130); accepts Medicare assignment
- Medical or professional school
- Albert Einstein College Of Medicine Of Yeshiva University, 1975
- Entity
- Type 1 · individual
Also registered at 110 Worcester St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jordan Busch, M.D.Internal Medicine Physician1033158563
- Nancy Corliss, MDInternal Medicine Physician1699763482
- Martha Wu, M.D.Internal Medicine Physician1912954702
Verify Steven R. Flier in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 40073Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% more Medicare Part D claims than the average internal medicine physician in 2024
3,428 Medicare Part D claims for 208 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 17 claims were for opioids.
Most prescribed
- Atorvastatin Calcium318 claims
- Rosuvastatin Calcium222 claims
- Amlodipine Besylate139 claims
- Metformin Hcl Er118 claims
- Eliquis117 claims
- Lisinopril92 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
- Personal Physicians Healthcare PCWellesley, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
81 internal medicine physician records list a practice address in Wellesley
They are 81 of the 1,117 NPPES records with a practice address in Wellesley, and 6,825 internal medicine physician records in Massachusetts.
All 81 in Wellesley → All 6,825 in Massachusetts → Every provider in Wellesley →
Other internal medicine physician records in Massachusetts
- Nawal Aamir, MDWorcester, MA1588248926
- Nathan Abare, MDSpringfield, MA1386852747
- Nooshin Abbasi, MD MPHNewton, MA1831888353
- Taimur AbbasiBoston, MA1841673522
- Lauren Abbate, MDBoston, MA1922099621
- Bassima Abdallah, MDBoston, MA1912327305
- Maya Abdallah, MDBoston, MA1861854937
- Samah Abdallah, MDBrighton, MA1730814971
- Omar Abdel-Wahab, M.D.Boston, MA1023042777
- Mohab AbdelhalimBoston, MA1871388496
Common questions
What is Steven R. Flier, M.D.'s NPI number?
Steven R. Flier, M.D.'s National Provider Identifier (NPI) is 1013905751, issued on Oct 6, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Steven R. Flier, M.D. located?
The NPPES record lists a practice address at 110 Worcester St, Wellesley, MA, 02481. Phone: (617) 731-0058. Providers update this record themselves, so call before visiting.
How can I verify Steven R. Flier, M.D.'s license?
NPPES lists Massachusetts license number 40073, 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 Steven R. Flier, M.D. prescribe under Medicare Part D?
In 2024, Steven R. Flier, M.D. had 3,428 Medicare Part D claims for 208 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.