Jacob E. Lazarus, MD, PHD
Infectious Disease Physician · Boston, MA
Jacob E. Lazarus, MD, PHD is an infectious disease physician with a practice address in Boston, Massachusetts, and NPI 1457764433, issued on Jun 6, 2014. Check the license (Massachusetts 278350, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Jacob E. Lazarus
- Credential
- MD, PHD
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- 278350 MA
Self-reported in NPPES; status is on the state search - Practice location
- Massachusetts General Hospital, Boston, MA 02114
- Phone
- (617) 726-2865
- Enumerated
- Jun 6, 2014
- Record last updated
- May 15, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190626000654); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 2014
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 487 in Massachusetts → Look up another NPI →
Also registered at Massachusetts General Hospital
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Jacob E. Lazarus in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 278350Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
13% fewer Medicare Part D claims than the average infectious disease physician in 2024
600 Medicare Part D claims for 103 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Methenamine Hippurate154 claims
- Estradiol46 claims
- Tivicay30 claims
- Biktarvy25 claims
- Dovato21 claims
- Doxycycline Monohydrate21 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
- Massachusetts General Physicians Organization IncBoston, MA
- The General Hospital CorporationWaltham, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jacob E. Lazarus among 487 infectious disease physician records in Massachusetts
Jacob E. Lazarus, MD, PHD is one of 487 infectious disease physician records with a practice address in Massachusetts. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 81% of them.
- NPI issued2014 · 81% of these records are older, 16% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2014 · median 2003 among the 296 with a school on file
- Record last updated2019 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Massachusetts
There are 487 infectious disease physician records in Massachusetts.
All 487 in Massachusetts → Every provider in Boston → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Diana Brainard, MDBoston, MA 021141093705667
- Joan Butterton, MDBoston, MA 021141043200157
- Benjamin Davis, MDBoston, MA 021141912997537
- Marlene Durand, MDBoston, MA 021141598756058
- Jay Fishman, MDBoston, MA 021141912988106
- Marcia Goldberg, MDBoston, MA 021141700877834
- Deborah Hung, MDBoston, MA 021141629068267
- Sabina Islam, MDBoston, MA 021141275514390
Common questions
What is Jacob E. Lazarus, MD, PHD's NPI number?
Jacob E. Lazarus, MD, PHD's National Provider Identifier (NPI) is 1457764433, issued on Jun 6, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Jacob E. Lazarus, MD, PHD located?
The NPPES record lists a practice address at Massachusetts General Hospital, Boston, MA, 02114. Phone: (617) 726-2865. Providers update this record themselves, so call before visiting.
How can I verify Jacob E. Lazarus, MD, PHD's license?
NPPES lists Massachusetts license number 278350, 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 Jacob E. Lazarus, MD, PHD prescribe under Medicare Part D?
In 2024, Jacob E. Lazarus, MD, PHD had 600 Medicare Part D claims for 103 beneficiaries; the average among infectious disease physician prescribers was 689. 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.