NPPES file of Aug 9, 2026

Karen Rita Jacobson, MD

Infectious Disease Physician · Boston, MA

Karen Rita Jacobson, MD is an infectious disease physician with a practice address in Boston, Massachusetts, and NPI 1164407623, issued on Dec 7, 2005. Check the license (Massachusetts 229163, 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
1164407623
Name
Karen Rita Jacobson
Credential
MD
Primary taxonomy
Infectious Disease Physician 207RI0200X
License number
229163 MA
Self-reported in NPPES; status is on the state search
Practice location
725 Albany St, Boston, MA 02118
Phone
(617) 414-4290
Enumerated
Dec 7, 2005
Record last updated
Jul 15, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(617) 414-4285
Medicaid ID
110073936A MA
Medicare enrollment
Enrolled (PECOS I20060816000102); accepts Medicare assignment
Medical or professional school
Johns Hopkins University School Of Medicine, 2002
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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Also registered at 725 Albany St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Myriam Abdennadher, M.D.Epilepsy Physician1407290133
  2. Carlos Acuna-VillaordunaInfectious Disease Physician1598922742
  3. Daniel Alford, M.D., M.P.H.Internal Medicine Physician1194708628
  4. Paul Ambrose, PA-CPhysician Assistant1730631557
  5. Naomi Amudala, NPFamily Nurse Practitioner1154655348
  6. Tufik Assad, M.D.Pulmonary Disease Physician1093941890

Verify Karen Rita Jacobson 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 229163
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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93% fewer Medicare Part D claims than the average infectious disease physician in 2024

48 Medicare Part D claims, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Karen Jacobson48
  2. Specialty average689

Most prescribed

  1. Isoniazid30 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 one group practice

  1. Evans Medical Foundation IncBoston, MA

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

Karen Rita Jacobson among 487 infectious disease physician records in Massachusetts

Karen Rita Jacobson, MD 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 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 83% newer
  • In a Medicare fileYes · 69% of these records are
  • In the CMS Doctors and Clinicians fileYes · 61% of these records are
  • Graduated2002 · median 2003 among the 296 with a school on file
  • Record last updated2014 · 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.

The 8 infectious disease physician records with the nearest ZIP codes

  1. Tamar Barlam, M.D.Boston, MA 021181588636328
  2. M. Barry, M.D.Boston, MA 021181205811668
  3. Philip Carling, M.D.Boston, MA 021181760447296
  4. David Coleman, MDBoston, MA 021181649252305
  5. Deborah Cotton, M.D.Boston, MA 021181235115320
  6. Christopher Gill, M.D., MSBoston, MA 021181831156611
  7. Davidson Hamer, MDBoston, MA 021181790741841
  8. Charles Horsburgh, M.D.Boston, MA 021181497731210

Common questions

What is Karen Rita Jacobson, MD's NPI number?

Karen Rita Jacobson, MD's National Provider Identifier (NPI) is 1164407623, issued on Dec 7, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Karen Rita Jacobson, MD located?

The NPPES record lists a practice address at 725 Albany St, Boston, MA, 02118. Phone: (617) 414-4290. Providers update this record themselves, so call before visiting.

How can I verify Karen Rita Jacobson, MD's license?

NPPES lists Massachusetts license number 229163, 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 Karen Rita Jacobson, MD prescribe under Medicare Part D?

In 2024, Karen Rita Jacobson, MD had 48 Medicare Part D claims; 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.