Katherine A. Gergen Barnett, MD
Family Medicine Physician · Boston, MA
Katherine A. Gergen Barnett, MD is a family medicine physician with a practice address in Boston, Massachusetts, and NPI 1023209129, issued on Aug 5, 2007. Check the license (Massachusetts 233674, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Katherine A. Gergen Barnett
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 233674 MA
Self-reported in NPPES; status is on the state search - Practice location
- 11 Melnea Cass Blvd, Boston, MA 02119
- Phone
- (617) 414-2080
- Enumerated
- Aug 5, 2007
- Record last updated
- Sep 18, 2025
- Medicaid ID
- 110080981A MA
- Medicare enrollment
- Enrolled (PECOS I20081030000230); accepts Medicare assignment
- Medical or professional school
- Yale University School Of Medicine, 2005
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,265 in Massachusetts → Look up another NPI →
Also registered at 11 Melnea Cass Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Justin Alves, FNP-BCFamily Nurse Practitioner1669167185
- Marielle Baldwin, MDFamily Medicine Physician1396164877
- Rebecca BilodeauClinical Social Worker1164901146
- Courtney Cameron, PHARMDAmbulatory Care Pharmacist1245990290
- Patrick Couchot, MDFamily Medicine Physician1730649872
- Lana Habash, M.D.Family Medicine Physician1316911399
Verify Katherine A. Gergen Barnett in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 233674Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average family medicine physician in 2024
1,934 Medicare Part D claims for 111 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 81 claims were for opioids.
Most prescribed
- Atorvastatin Calcium113 claims
- Amlodipine Besylate97 claims
- Hydrochlorothiazide95 claims
- Lisinopril90 claims
- Metformin Hcl63 claims
- Metoprolol Succinate54 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
- Boston University Family Medicine IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine A. Gergen Barnett among 2,265 family medicine physician records in Massachusetts
Katherine A. Gergen Barnett, MD is one of 2,265 family medicine physician records with a practice address in Massachusetts. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 47% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2005 · median 2006 among the 1,529 with a school on file
- Record last updated2025 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in Massachusetts
There are 2,265 family medicine physician records in Massachusetts.
All 2,265 in Massachusetts → Every provider in Boston → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Marielle Baldwin, MDBoston, MA 021191396164877
- Daniela Connelly, MDRoxbury, MA 021191518186733
- Patrick Couchot, MDBoston, MA 021191730649872
- Nona Girardi, M.D.Roxbury, MA 021191366474884
- Lana Habash, M.D.Boston, MA 021191316911399
- Kristen Hanssen, MDBoston, MA 021191134329691
- Christopher Manasseh, M.D.Boston, MA 021191407820673
- Lily Payvandi, MDBoston, MA 021191457889263
Common questions
What is Katherine A. Gergen Barnett, MD's NPI number?
Katherine A. Gergen Barnett, MD's National Provider Identifier (NPI) is 1023209129, issued on Aug 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Katherine A. Gergen Barnett, MD located?
The NPPES record lists a practice address at 11 Melnea Cass Blvd, Boston, MA, 02119. Phone: (617) 414-2080. Providers update this record themselves, so call before visiting.
How can I verify Katherine A. Gergen Barnett, MD's license?
NPPES lists Massachusetts license number 233674, 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 Katherine A. Gergen Barnett, MD prescribe under Medicare Part D?
In 2024, Katherine A. Gergen Barnett, MD had 1,934 Medicare Part D claims for 111 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.