Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Cathleen M Ammann, MD

Individual provider Hospitalist Physician · NPI 1821179540

Cathleen M Ammann, MD is a Hospitalist in Dover, New Hampshire. Graduated from Emory University School of Medicine in 1996, 30 years ago. Practices with Wentworth Douglass Physician Corporation, a 431-clinician group and accepts Medicare assignment. Licensed in New Hampshire.

Years since qualifying
30
Trained at
Emory University School of Medicine
Licensed in
NH
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

789 Central Ave Level 2
Dover, NH 03820-2526 Not confirmed with CMS for 12 years — call before visiting
Phone: (603) 740-2503
Fax: (603) 740-2497
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 11233 (NH)

Record details

NPI number1821179540
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 18, 2006
Last updated in NPPESFebruary 20, 2014

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHOSPITALIST
Medical schoolEMORY UNIVERSITY SCHOOL OF MEDICINE
Graduated 1996 (30 years in practice)
Group practice Wentworth Douglass Physician Corporation — 431 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients315
Services billed 902 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Wentworth-Douglass Hospital Hospital · Dover, NH · listed as Wentworth Douglass Hospital
  • Portsmouth Regional Hospital Hospital · Portsmouth, NH

Colleagues at Wentworth Douglass Physician Corporation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 431 clinicians in the practice; 12 are shown here.

Other providers in Dover