Ann Geimer, N.P.
NPI 1558596478 · Nurse Practitioner · Decatur, IN
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ann Geimer, N.P. is a Nurse Practitioner provider in Decatur, IN (NPI 1558596478).
Provider details
- NPI number
- 1558596478
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- N.P.
- Sex
- Female
- Sole proprietor
- No
- License
- 71002922A (IN)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
61 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 19 | $40 |
| Comprehensive Assessment of and Care Planning for Patients Requiring Chronic Care Management Services (list Separately in Addition to Primary Monthly Care Management Service)G0506 | 17 | $35 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 14 | $77 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 11 | $77 |
Typical Medicare-allowed amounts for these services range $35–$77 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Alendronate Sodium | 42 | 19 |
| Levothyroxine Sodium | 30 | 19 |
| Tramadol Hcl | 19 | 11 |
| Lisinopril | 18 | — |
| Allopurinol | 17 | — |
| Famotidine | 17 | — |
| Metformin Hcl | 17 | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$14 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-05-20
- Last updated
- 2025-10-15
- Certified
- 2025-10-15
Frequently asked questions
- What is Ann Geimer's NPI number?
- Ann Geimer's National Provider Identifier (NPI) is 1558596478, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ann Geimer's specialty?
- Ann Geimer is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Ann Geimer located?
- Ann Geimer's practice location on file with NPPES is 1100 Mercer Ave, Decatur, IN 46733-2303.
- What is Ann Geimer's phone number?
- The practice phone number listed in the NPPES registry for Ann Geimer is (260) 724-2145.
- Does Ann Geimer accept Medicare?
- Ann Geimer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ann Geimer's NPI active?
- Yes — Ann Geimer's NPI (1558596478) is active in the NPPES registry as of the last update on 2025-10-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.