Dr. John Katzenberg, MD

Dr. John Katzenberg, MD

Internal Medicine  |  
Male  |  
Age 64
Insurances AcceptedSave
Dr. John Katzenberg, MD is an internal medicine doctor who practices in Townsend, MA. He is 64 years old and has been practicing for 36 years. Dr. Katzenberg is affiliated with Nashoba Valley Medical Center.

208 Main St

Townsend, MA 01469

Contact Information

(978) 597-1360

Insurance Accepted

  • Aetna
  • Blue Cross Blue Shield
  • Cigna
  • First Health (Coventry Health Care)
  • Harvard Pilgrim Health Care
  • Humana
  • MultiPlan
  • Tufts Health Plan
  • UnitedHealthCare

*Please verify this information when scheduling an appointment.

Learn about Dr. Katzenberg

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Dr. Katzenberg's Experience

Dr. Katzenberg's experience matches your search based on the following criteria:
  • Based on total number of patients treated over the last 12 months
  • Specializes in Internal Medicine
  • Board certified in Emergency Medicine and Internal Medicine
  • No malpractice claims found
  • No sanctions found
  • No board actions found

Care Philosophy

This content was provided by Dr. Katzenberg "I try to give patients the time they need to learn everything I can about them. In order to better decide on the right treatments and advice to give them."


  • Internal Medicine
  • Emergency Medicine

Board Certifications

  • Emergency Medicine
    Accredited by: American Board of Emergency Medicine*
  • Internal Medicine
    Accredited by: American Board of Internal Medicine*

Conditions Treated

  • Addiction
  • Allergic Rhinitis
  • Asthma
  • Attention Deficit Disorder (ADD)
  • COPD (Chronic Obstructive Pulmonary Disease)
  • Depression
  • Diabetes
  • Enlarged Prostate (BPH)
  • Gastritis
  • High Cholesterol
  • Hypertension
  • Infections
  • Irritable Bowel Syndrome
  • Nicotine Addiction
  • Thyroid Disease
  • Tobacco Withdrawal


  • Abscess Incision and Drainage
  • Earwax Removal
  • Flu Shot
  • Immunization
  • Mole Removal
  • Strep Test
  • Vaccination
  • Wart Removal

Background Check

0 Malpractice Claims

No malpractice history found for Massachusetts.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • Boston University School Of Medicine
    Undergraduate School | Graduated 1977
  • Boston University School Of Medicine
    Medical School | Graduated 1981
  • St Elizabeth Mc Boston
    Internship Hospital | Completed 1982
  • St Elizabeth Hosp Of Boston
    Residency Hospital | Completed 1984
  • University Mass Med Center
    Fellowship Hospital | Completed 1985

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Katzenberg has no media or publications listed.

Languages Spoken

  • English

Memberships & Professional Affiliations

Dr. Katzenberg does not have any memberships or affiliations listed. If you are Dr. Katzenberg and would like to add memberships or affiliations, please update your profile.

Dr. Katzenberg's Reviews

Likelihood of recommending Dr. Katzenberg to family and friends
based on 14 total reviews (5 with comments)
Dr. Katzenberg's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers Questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
  • Average wait time
    16 to 30 minutes
Patient Comments (5)
in Newton Upper Falls, MA |
I have been a patient of Dr. Katzenberg's for over 22 years. He is always patient and answers all my questions. He never hurries you during a visit, but takes the time to answer questions and discuss any concerns. He really cares.
in Townsend, MA |
Bullying behavior. I suppose that it is common these days, but he reads from a list insisting that you have what's on the list, ignoring any facts that were established by interview. After 4 years could not correctly name my medical problem. Expects you to spend days taking tests that are probably not necessary, but ignores your established medical problems. Present receptionist has a mission to be exceptionally rude, not returning phone calls, accusing me of lying without provocation.
Ashby, MA |
I was never able to actually see the doctor. I switched PCP after my doctor retired. I went to Dr. Katzenberg's office and filled out all of the appropriate paperwork. I was given an appointment four weeks out. I explained to the front office person that I was going to need refills for certain medications before the appt. She assured me that she would get me in before the appt. I called several times trying to get in or at least to have my prescriptions sent to the pharmacy. It never happened!
in Tyngsboro Massachusetts |
I have been a patient of Dr.Katzenberg since he opened his first practice many years ago. I have gotten excellent care and would highly recommend him. Dr. John takes his time and never rushes you and he takes more of a holistic approach rather than pushing medications that have many side-effects. If you call him he does call you back and when your sick and need to be seen right away his assistant always finds you a appointment. He is highly professional and a rare breed in our fast pace world.
in Boston, MA |
Thorough and knowledgeable, although some of his ideas are sometimes old school. Biggest negative is his receptionist, about the least helpful you could imagine, though annoyingly polite in a cold and perfunctory way. Don't believe I've ever seen her smile. Just my opinions, take them with a grain of salt.
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Visit Dr. Katzenberg

Now Accepting New Patients
Dr. Katzenberg accepts 9 insurance carriers
  • Aetna
    Aetna HMO
    Choice Plus POS II
  • Blue Cross Blue Shield
    Blue Card PPO
  • Cigna
    Cigna PPO
    Great West Healthcare-Cigna PPO
    Open Access
  • First Health (Coventry Health Care)
    First Health (Coventry Health Care) PPO
  • Harvard Pilgrim Health Care
    Harvard Pilgrim Health Care PPO
  • Humana
    Choice Care PPO
  • MultiPlan
    MultiPlan PPO
    PHCS Network PPO
  • Tufts Health Plan
    Tufts PPO
  • UnitedHealthCare
    Choice Plus POS
    Options PPO

*Please verify this information when scheduling an appointment.

Hospitals where Dr. Katzenberg has admitting privileges

Nashoba Valley Medical Center
200 Groton Rd
Ayer, MA 01432
View Hospital Profile

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