John Hopkins Fountain, MD
Critical Care Medicine (Internal Medicine) Physician · Boston, MA
John Hopkins Fountain, MD is a critical care medicine (internal medicine) physician with a practice address in Boston, Massachusetts, and NPI 1225590383, issued on Apr 5, 2019. Check the license (Massachusetts 1019462, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- John Hopkins Fountain
- Credential
- MD
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License numbers
- 1019462 MA
314912 NY
Self-reported in NPPES; status is on the state search - Practice location
- 55 Fruit St, Boston, MA 02114
- Phone
- (617) 724-9674
- Enumerated
- Apr 5, 2019
- Record last updated
- May 26, 2026
- Medicare enrollment
- Enrolled (PECOS I20260129001053); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 157 in Massachusetts → Look up another NPI →
Also registered at 55 Fruit St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Hopkins Fountain in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 1019462Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average critical care medicine (internal medicine) physician in 2024
172 Medicare Part D claims for 36 beneficiaries, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D. Brand-name drugs were 53% of claims.
Most prescribed
- Anoro Ellipta35 claims
- Albuterol Sulfate Hfa18 claims
- Prednisone16 claims
- Wixela Inhub15 claims
- Incruse Ellipta12 claims
- Sulfamethoxazole-Trimethoprim11 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.
The MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Mount Auburn Professional Services IncCambridge, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Hopkins Fountain among 157 critical care medicine (internal medicine) physician records in Massachusetts
John Hopkins Fountain, MD is one of 157 critical care medicine (internal medicine) physician records with a practice address in Massachusetts. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 92% of them.
- NPI issued2019 · 92% of these records are older, 6% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2019 · median 2005 among the 116 with a school on file
- Record last updated2026 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in Massachusetts
There are 157 critical care medicine (internal medicine) physician records in Massachusetts.
All 157 in Massachusetts → Every provider in Boston → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Edward Bittner, MD PHDBoston, MA 021141215912456
- Richard Channick, M.D.Boston, MA 021141144255886
- Alexandra Cist, MDBoston, MA 021141659344091
- Ashwin Dharmadhikari, MDBoston, MA 021141710968664
- Katherine Dudley, M.D.Boston, MA 021141245497619
- Jean Elrick, MDBoston, MA 021141275524993
- Ming-Hui Fan, MDBoston, MA 021141063561694
- Fiona Gibbons, MDBoston, MA 021141720079288
Common questions
What is John Hopkins Fountain, MD's NPI number?
John Hopkins Fountain, MD's National Provider Identifier (NPI) is 1225590383, issued on Apr 5, 2019. An NPI identifies a provider in billing; it is not a license.
Where is John Hopkins Fountain, MD located?
The NPPES record lists a practice address at 55 Fruit St, Boston, MA, 02114. Phone: (617) 724-9674. Providers update this record themselves, so call before visiting.
How can I verify John Hopkins Fountain, MD's license?
NPPES lists Massachusetts license number 1019462, 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 Hopkins Fountain, MD prescribe under Medicare Part D?
In 2024, John Hopkins Fountain, MD had 172 Medicare Part D claims for 36 beneficiaries; the average among critical care medicine (internal medicine) physician prescribers was 696. Part D covers Medicare prescriptions only.
What is John Hopkins Fountain, MD's MIPS final score?
The 2023 MIPS final score is 100 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.