Cathleen Ammann, MD
NPI 1821179540 · Hospitalist Physician · Dover, NH
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cathleen Ammann, MD is a Hospitalist Physician provider in Dover, NH (NPI 1821179540).
Provider details
- NPI number
- 1821179540
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 11233 (NH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
878 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 403 | $77 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 157 | $114 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 101 | $112 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 93 | $168 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 55 | $46 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 37 | — |
| Metoprolol Succinate | 24 | 11 |
| Prednisone | 22 | 21 |
| Gabapentin | 20 | — |
| Furosemide | 19 | — |
| Famotidine | 16 | — |
| Lamotriginebrand: Lamotrigine Er | 16 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-18
- Last updated
- 2014-02-20
Frequently asked questions
- What is Cathleen Ammann's NPI number?
- Cathleen Ammann's National Provider Identifier (NPI) is 1821179540, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cathleen Ammann's specialty?
- Cathleen Ammann is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Cathleen Ammann located?
- Cathleen Ammann's practice location on file with NPPES is 789 Central Ave, Dover, NH 03820-2526.
- What is Cathleen Ammann's phone number?
- The practice phone number listed in the NPPES registry for Cathleen Ammann is (603) 740-2503.
- Does Cathleen Ammann accept Medicare?
- Cathleen Ammann is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cathleen Ammann's NPI active?
- Yes — Cathleen Ammann's NPI (1821179540) is active in the NPPES registry as of the last update on 2014-02-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.