Esperance Anne Kreek Schaefer, M.D., ,M.P.H.
Gastroenterology Physician · Boston, MA
Esperance Anne Kreek Schaefer, M.D., ,M.P.H. is a gastroenterology physician with a practice address in Boston, Massachusetts, and NPI 1588791917, issued on Feb 27, 2007. Check the license (Massachusetts 238899, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Esperance Anne Kreek Schaefer
- Credential
- M.D., ,M.P.H.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- 238899 MA
L-228690 MA
Self-reported in NPPES; status is on the state search - Practice location
- 75 Francis St, Boston, MA 02115
- Phone
- (617) 732-5500
- Enumerated
- Feb 27, 2007
- Record last updated
- Aug 31, 2023
- Medicare enrollment
- Enrolled (PECOS I20101008000570); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 2006
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 686 in Massachusetts → Look up another NPI →
Also registered at 75 Francis St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Muhammad Abd-El-Barr, M.D., PH.D.Neurological Surgery Physician1891922688
- Duaa AbdelhameidStudent in an Organized Health Care Education/Training Program1851852867
Verify Esperance Anne Kreek Schaefer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 238899Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average gastroenterology physician in 2024
259 Medicare Part D claims for 110 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Omeprazole68 claims
- Gavilyte-G39 claims
- Famotidine23 claims
- Carvedilol16 claims
- Furosemide15 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
- Brigham And Womens Physicians Organization IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Esperance Anne Kreek Schaefer among 686 gastroenterology physician records in Massachusetts
Esperance Anne Kreek Schaefer, M.D., ,M.P.H. is one of 686 gastroenterology physician records with a practice address in Massachusetts. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 51% of them.
- NPI issued2007 · 51% of these records are older, 40% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2006 · median 2004 among the 491 with a school on file
- Record last updated2023 · 66% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Massachusetts
There are 686 gastroenterology physician records in Massachusetts.
All 686 in Massachusetts → Every provider in Boston → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Peter Banks, MDBoston, MA 021151235188251
- Martin Carey, MD DSCBoston, MA 021151326004524
- Sonia Friedman, MDBoston, MA 021151841257169
- Norman Grace, MDBoston, MA 021151831156215
- Kunal Jajoo, M.D.Boston, MA 021151336120591
- Linda Lee, MDBoston, MA 021151255315214
- Ramona Lim, M.D.Boston, MA 021151285608240
- Frederick Makrauer, MDBoston, MA 021151174580484
Common questions
What is Esperance Anne Kreek Schaefer, M.D., ,M.P.H.'s NPI number?
Esperance Anne Kreek Schaefer, M.D., ,M.P.H.'s National Provider Identifier (NPI) is 1588791917, issued on Feb 27, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Esperance Anne Kreek Schaefer, M.D., ,M.P.H. located?
The NPPES record lists a practice address at 75 Francis St, Boston, MA, 02115. Phone: (617) 732-5500. Providers update this record themselves, so call before visiting.
How can I verify Esperance Anne Kreek Schaefer, M.D., ,M.P.H.'s license?
NPPES lists Massachusetts license number 238899, 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 Esperance Anne Kreek Schaefer, M.D., ,M.P.H. prescribe under Medicare Part D?
In 2024, Esperance Anne Kreek Schaefer, M.D., ,M.P.H. had 259 Medicare Part D claims for 110 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.