NPPES file of Aug 9, 2026

Julia Vivian Loewenthal, M.D.

Geriatric Medicine (Internal Medicine) Physician · Boston, MA

Julia Vivian Loewenthal, M.D. is a geriatric medicine (internal medicine) physician with a practice address in Boston, Massachusetts, and NPI 1841671013, issued on Jun 14, 2015. Check the license (Massachusetts 272471, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1841671013
Name
Julia Vivian Loewenthal
Credential
M.D.
Primary taxonomy
Geriatric Medicine (Internal Medicine) Physician 207RG0300X
License numbers
272471 MA
264083 MA
Self-reported in NPPES; status is on the state search
Practice location
75 Francis St, Boston, MA 02115
Phone
(617) 732-5500
Enumerated
Jun 14, 2015
Record last updated
Jul 2, 2019 (not updated in 7 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20190724000490); accepts Medicare assignment
Medical or professional school
University Of Virginia School Of Medicine, 2015
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest geriatric medicine (internal medicine) physician records → All 225 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.

  1. Amin AalipourStudent in an Organized Health Care Education/Training Program1902483258
  2. Emily Aaronson, M.D.Emergency Medicine Physician1962791558
  3. Sarah Abbett, M.D.Anesthesiology Physician1902097736
  4. Christine Abbott, NPAdult Health Nurse Practitioner1851471940
  5. Muhammad Abd-El-Barr, M.D., PH.D.Neurological Surgery Physician1891922688
  6. Duaa AbdelhameidStudent in an Organized Health Care Education/Training Program1851852867

Verify Julia Vivian Loewenthal in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
    Search for license 272471    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Massachusetts license search

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94% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024

262 Medicare Part D claims for 70 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D.

  1. Julia Loewenthal262
  2. Specialty average4,246

Most prescribed

  1. Donepezil Hcl35 claims
  2. Lisinopril17 claims
  3. Citalopram Hbr14 claims
  4. Mirtazapine12 claims
  5. Eliquis11 claims
  6. Famotidine11 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 2 group practices

  1. Brigham And Womens Physicians Organization IncBoston, MA
  2. Jay Luthar MD PLLCBoston, MA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Julia Vivian Loewenthal among 225 geriatric medicine (internal medicine) physician records in Massachusetts

Julia Vivian Loewenthal, M.D. 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 2015, is newer than 83% of them.

  • NPI issued2015 · 83% of these records are older, 15% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 53% of these records are
  • Graduated2015 · median 2000 among the 119 with a school on file
  • Record last updated2019 · 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 → Every provider in Boston → Geriatric Medicine (Internal Medicine) Physician nationwide →

The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes

  1. Rachelle Bernacki, M.D.Boston, MA 021151134145345
  2. Muriel Gillick, M.D.Boston, MA 021151831124601
  3. Marie Francesca Ansay, MDBoston, MA 021141891480414
  4. Warren Backman, MBBSBoston, MA 021141174910574
  5. Gianni BonoBoston, MA 021161538510995
  6. Sevdenur Cizginer Konuk, MD, MPHBoston, MA 021141881906725
  7. Corinne Corbett, MDBoston, MA 021141265171284
  8. Kent Creamer, MDBoston, MA 021141730136508

Common questions

What is Julia Vivian Loewenthal, M.D.'s NPI number?

Julia Vivian Loewenthal, M.D.'s National Provider Identifier (NPI) is 1841671013, issued on Jun 14, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Julia Vivian Loewenthal, M.D. 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 Julia Vivian Loewenthal, M.D.'s license?

NPPES lists Massachusetts license number 272471, 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 Julia Vivian Loewenthal, M.D. prescribe under Medicare Part D?

In 2024, Julia Vivian Loewenthal, M.D. had 262 Medicare Part D claims for 70 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.