Doctor profile · Federal record

Dr. Cathleen Ammann, MD

Hospitalist Physician (CMS: Hospitalist) · Dover, NH

  • NPI 1821179540
  • Accepts Medicare
  • 30 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
789 Central Ave, Level 2
Dover, NH 038202526
(603) 740-2503
fax (603) 740-2497

Credentials & registration

NPPES · NUCC
NPI registered
October 2006 — 20 yrs on file
Profile last updated
February 20, 2014
Year of graduation
1996 — 30 yrs since
Specialty taxonomy
208M00000X — NUCC code
State license (1)
New Hampshire #11233
Medicaid (2)
NH #1821179540 · NH #3074957

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1821179540. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
834
Distinct HCPCS
7
Medicare allowed
$86,630
HCPCS Description Services Patients Avg allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 291 161 $78
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 234 137 $118
99239 Hospital discharge day management, more than 30 minutes 102 101 $113
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 87 85 $170
99238 Hospital discharge day management, 30 minutes or less 66 65 $80
99231 Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 30 17 $49
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 24 24 $129

In context: peer comparison

Among 12 peers in Dover Hospitalist Physician, average services per provider: 143. This provider delivers 5.8× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
408
Patients
53
Total drug cost
$12,276
Drug Type Claims Patients Total cost
Furosemide Generic 61 18 $266
Levothyroxine Sodium Generic 40 0 $534
Metoprolol Succinate Generic 38 16 $621
Metoprolol Tartrate Generic 30 0 $151
Lisinopril Generic 29 0 $233
Potassium Chloride Generic 27 0 $293
Spironolactone Generic 25 0 $450
Duloxetine Hcl Generic 24 0 $1,682
Gabapentin Generic 22 0 $319
Pantoprazole Sodium Generic 22 0 $383

Frequently asked questions

Auto-generated from federal data
What is Dr. Cathleen Ammann's medical specialty?
Dr. Cathleen Ammann practices Hospitalist Physician in Dover, NH.
Where does Dr. Cathleen Ammann practice?
Dr. Cathleen Ammann practices at 789 Central Ave, Dover, NH 038202526. Office phone: 6037402503.
What is Dr. Cathleen Ammann's NPI?
Dr. Cathleen Ammann's National Provider Identifier (NPI) is 1821179540, issued by NPPES.
Does Dr. Cathleen Ammann accept Medicare assignment?
Yes. Dr. Cathleen Ammann accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Cathleen Ammann commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.