Dr. Jacob E. Lazarus, MD, PhD
- Medicare services, 2024
- 285
- Medicare patients, 2024
- 124
- Part D claims, 2024
- 600
- Publications
- 19
- Hospital affiliations
- 2
- Practice address
- 55 Fruit Street, Boston, MA 02114
- Practice phone
- Call (617) 726-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Lazarus' professional email, personal email and mobile number
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Dr. Jacob E. Lazarus is an infectious disease specialist in Boston, Massachusetts
Dr. Lazarus practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Lazarus' NPI, 1457764433, was assigned on June 6, 2014. Dr. Lazarus graduated from Perelman School of Med at the University of Pennsylvania in 2014. Dr. Lazarus holds Massachusetts license 278350.
- NPI
- 1457764433NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7517184815
- NPI enumeration date
- June 6, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (617) 726-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jacob E. Lazarus practices at Massachusetts General Hospital in Boston, Massachusetts
Dr. Lazarus' primary practice is Massachusetts General Hospital, at 55 Fruit Street, Boston, MA 02114 in Suffolk County. The practice phone is (617) 726-2000.
- Massachusetts General Hospital55 Fruit Street, Boston, MA 02114 · Suffolk CountyPhone(617) 726-2000
Source: Dmand AI Affiliation Data
Dr. Jacob E. Lazarus is affiliated with 5 sites of care and 2 medical groups
Dr. Lazarus' primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. Lazarus is also affiliated with Salem Hospital. The medical group on file is Massachusetts General Physicians Organization (MGPO). Dmand AI also links Dr. Lazarus to 2 more group practices and clinics, 1 community health center and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jacob E. Lazarus' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lazarus practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Massachusetts General Hospital | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jacob E. Lazarus is one of 395 infectious disease specialists in Massachusetts
Infectious disease is Dr. Lazarus' primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Lazarus is licensed in Massachusetts.
Specialties and state licenses
- Infectious disease, MassachusettsPrimary
Infectious disease specialists near Dr. Lazarus
Counts of infectious disease specialists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Jacob E. Lazarus billed Medicare for 285 services in 2024
CMS data shows 285 Medicare services from Dr. Lazarus across 7 procedure codes in 2024, for 124 Medicare patients. Medicare paid $24,141 for them.
Dr. Lazarus' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2652024: 19626%
- Other services
- 2023: 02024: 89
Where Dr. Lazarus' Medicare services took place, 2024
- In an office15253%
- In a facility13347%
Dr. Lazarus compared with the Massachusetts median for infectious disease specialists, 2024
- Dr. Lazarus
- Massachusetts median
- Medicare services
- 285vs 16375% above
- Medicare patients
- 124vs 9432% above
- Part D claims
- 391vs 1083.6 times
Medians across 363 infectious disease specialists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Lazarus' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jacob E. Lazarus treated 124 Medicare patients in 2024, average age 75
CMS counts 124 Medicare patients who saw Dr. Lazarus in 2024. The largest group is 75 to 84, with 51 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 23% are also on Medicaid. Their average risk score is 2.63, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Lazarus' median patient age at 74, with 59% women.
Dr. Lazarus' Medicare patients by age, 2024
Dr. Lazarus' Medicare patients by sex, 2024
- Women9073%
- Men3427%
Chronic conditions among Dr. Lazarus' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis57%
- Mood disorders45%
- Anxiety44%
- Chronic kidney disease41%
- Diabetes41%
- Ischemic heart disease40%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lazarus' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women59%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jacob E. Lazarus wrote 600 Medicare Part D claims in 2024
In 2024, Dr. Lazarus wrote 600 Medicare Part D claims for 103 patients. 78% of them were for generic drugs. CMS names the drug for 391 of them, across 12 drugs with 11 or more claims each, at $298,538 in total drug cost. In 2023, CMS named 356 claims across 16 drugs.
Dr. Lazarus' Part D claims by kind of drug, 2024
- Generic470 claims78%
- Brand-name130 claims22%
Dr. Lazarus' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Lazarus' Part D claims, 2024
- Antibiotics21%123 of 600 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3562024: 39110%
Drugs named by CMS: 12 in 2024, 16 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Jacob E. Lazarus offers telehealth to Medicare patients
Dr. Lazarus accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Lazarus as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Jacob E. Lazarus has 19 publications on record
Dmand AI links 19 papers to Dr. Lazarus, published from 2018 to 2025. 2024 was the busiest year, with 5. The most frequent topics are Anti-Bacterial Agents, Serratia marcescens and Bacterial Proteins. Dr. Lazarus has published most often in Infect Control Hosp Epidemiol. Dr. Lazarus' most frequent co-authors are Erica Seiguer Shenoy, MD, PhD, Caitlin M. Dugdale, MD and Matthew K. Waldor, MD.
Dr. Lazarus' papers by year, 2018 to 2025
Topics Dr. Lazarus writes about most
- Anti-Bacterial Agents
- Serratia marcescens
- Bacterial Proteins
- beta-Lactams
- Decision Support Systems, Clinical
- Disease Outbreaks
- Enterobacter cloacae
- Microbial Sensitivity Tests
Dr. Lazarus' most frequent co-authors
- Erica Seiguer Shenoy, MD, PhD8 shared papers
- Caitlin M. Dugdale, MD6 shared papers
- Matthew K. Waldor, MD6 shared papers
Recent publications by Dr. Lazarus
Microbiol Spectr
Infect Dis Clin North Am
See who Dr. Lazarus researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Lazarus works with, so you can find a warm path to the right infectious disease specialists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Jacob E. Lazarus graduated from Perelman School of Med at the University of Pennsylvania
Dr. Lazarus graduated from Perelman School of Med at the University of Pennsylvania in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jacob E. Lazarus's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Jacob E. Lazarus
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Jacob E. Lazarus' NPI number?
Dr. Jacob E. Lazarus' NPI number is 1457764433. It was assigned on June 6, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Jacob E. Lazarus?
Dr. Jacob E. Lazarus is an infectious disease specialist in Boston, Massachusetts. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Dr. Jacob E. Lazarus practice?
Dr. Lazarus practices at 55 Fruit Street, Boston, MA 02114. Dr. Lazarus' primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Lazarus to 2 group practices and clinics, 1 community health center and 1 medical group.
What is Dr. Jacob E. Lazarus' office phone number?
The practice phone on file for Dr. Lazarus is (617) 726-2000.
What is Dr. Jacob E. Lazarus' medical license number?
Dr. Lazarus holds Massachusetts license 278350.
Which hospitals is Dr. Jacob E. Lazarus affiliated with?
Dr. Lazarus practices at Massachusetts General Hospital in Boston, Massachusetts. Dr. Lazarus is also affiliated with Salem Hospital.
What medical group is Dr. Jacob E. Lazarus part of?
Dr. Lazarus is linked to Massachusetts General Physicians Organization (MGPO). Dmand AI links Dr. Lazarus to 1 more medical group.
Does Dr. Jacob E. Lazarus accept Medicare?
Yes. CMS data shows Dr. Lazarus billed Medicare for 285 services in 2024, and Dr. Lazarus accepts Medicare assignment.
Does Dr. Jacob E. Lazarus offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Lazarus as offering telehealth services.
How many Medicare patients does Dr. Jacob E. Lazarus see?
CMS counts 124 Medicare patients who saw Dr. Lazarus in 2024, with an average age of 75.
Show 6 more questionsShow fewer questions
What services does Dr. Jacob E. Lazarus bill to Medicare?
In 2024, Dr. Lazarus' most billed Medicare services were medicare service (G2211), office visit, established patient (99215) and office visit, established patient (99214).
Where did Dr. Jacob E. Lazarus go to medical school?
Dr. Lazarus graduated from Perelman School of Med at the University of Pennsylvania in 2014.
What drugs does Dr. Jacob E. Lazarus prescribe most?
In 2024 Medicare Part D data, Dr. Lazarus' most prescribed drugs by claims were Methenamine Hippurate, Estradiol and Tivicay.
How long has Dr. Jacob E. Lazarus been practicing?
Dr. Lazarus graduated from medical school in 2014, 12 years ago.
Does Dr. Jacob E. Lazarus do research?
Dmand AI links 19 publications to Dr. Lazarus, published from 2018 to 2025.
Who does Dr. Jacob E. Lazarus publish with?
Dr. Lazarus' most frequent co-authors are Erica Seiguer Shenoy, MD, PhD (8 shared papers), Caitlin M. Dugdale, MD (6 shared papers) and Matthew K. Waldor, MD (6 shared papers).
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