John M. Sloan, M.D.
Hematology (Internal Medicine) Physician · Boston, MA
John M. Sloan, M.D. is a hematology (internal medicine) physician with a practice address in Boston, Massachusetts, and NPI 1659345320, issued on Feb 17, 2006. Check the license (Massachusetts 224033, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- John M. Sloan
- Credential
- M.D.
- Primary taxonomy
- Hematology (Internal Medicine) Physician 207RH0000X
- License number
- 224033 MA
Self-reported in NPPES; status is on the state search - Practice location
- 830 Harrison Ave, 3RD FL, Boston, MA 02118
- Phone
- (617) 638-6428
- Enumerated
- Feb 17, 2006
- Record last updated
- May 20, 2026
- Fax
- (617) 638-5756
- Medicaid IDs
- 110084281A MA
3120319 MA - Medicare enrollment
- Enrolled (PECOS I20081106000031); accepts Medicare assignment
- Medical or professional school
- Yale University School Of Medicine, 2001
- Entity
- Type 1 · individual
8 nearest hematology (internal medicine) physician records → All 117 in Massachusetts → Look up another NPI →
Also registered at 830 Harrison Ave, 3RD FL
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Frances Arters, PA-CPhysician Assistant1700270444
- Tracy Joshi, DNPFamily Nurse Practitioner1629537758
- Adam Lerner, M.D.Medical Oncology Physician1063460087
- Emily Mann, MDInternal Medicine Physician1639638455
- Eric Marks, M.D.Medical Oncology Physician1952729717
- Tashia Prince-Lacombe, NPGerontology Nurse Practitioner1487194833
Verify John M. Sloan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 224033Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
25% fewer Medicare Part D claims than the average hematology (internal medicine) physician in 2024
371 Medicare Part D claims for 64 beneficiaries, against an average of 496 among the 1,036 providers of this specialty who prescribed in Part D. Brand-name drugs were 60% of claims.
Most prescribed
- Eliquis75 claims
- Xarelto36 claims
- Revlimid35 claims
- Acyclovir21 claims
- Prednisone21 claims
- Dexamethasone19 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.
Industry payments in 2024: $18,395.46
16 payments; by number, the most common kind was food and beverage; the largest payer was Adc Therapeutics America, Inc. The 721 providers of this specialty with any payment received $13,778.35 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
- Evans Medical Foundation IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John M. Sloan among 117 hematology (internal medicine) physician records in Massachusetts
John M. Sloan, M.D. is one of 117 hematology (internal medicine) physician records with a practice address in Massachusetts. 77% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 50% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2001 · median 2006 among the 77 with a school on file
- Record last updated2026 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology (Internal Medicine) Physician providers in Massachusetts
There are 117 hematology (internal medicine) physician records in Massachusetts.
All 117 in Massachusetts → Every provider in Boston → Hematology (Internal Medicine) Physician nationwide →
The 8 hematology (internal medicine) physician records with the nearest ZIP codes
- Rita Blanchard, M.D.Boston, MA 021181295710341
- Douglas Faller, M.D.Boston, MA 021181285699439
- Lillian McMahon, M.D.Boston, MA 021181801873542
- Duyen Ngo, M.D.Boston, MA 021181922193549
- Jorge Ruiz Lopez, M.D.Boston, MA 021181275154940
- Vaishali Sanchorawala, M.D.Boston, MA 021181003886573
- Shayna Sarosiek, MDBoston, MA 021181083840607
- Hedy Smith, M.D.Boston, MA 021181255399895
Common questions
What is John M. Sloan, M.D.'s NPI number?
John M. Sloan, M.D.'s National Provider Identifier (NPI) is 1659345320, issued on Feb 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John M. Sloan, M.D. located?
The NPPES record lists a practice address at 830 Harrison Ave, 3RD FL, Boston, MA, 02118. Phone: (617) 638-6428. Providers update this record themselves, so call before visiting.
How can I verify John M. Sloan, M.D.'s license?
NPPES lists Massachusetts license number 224033, 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 John M. Sloan, M.D. prescribe under Medicare Part D?
In 2024, John M. Sloan, M.D. had 371 Medicare Part D claims for 64 beneficiaries; the average among hematology (internal medicine) physician prescribers was 496. 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.