Mary Clark, CFNP
NPI 1891031621 · Family Nurse Practitioner · Warren, IN
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Clark, CFNP is a Family Nurse Practitioner provider in Warren, IN (NPI 1891031621).
Provider details
- NPI number
- 1891031621
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CFNP
- Sex
- Female
- Sole proprietor
- No
- License
- CNP-02460 (NM)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
13 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 59 | 21 |
| Losartan Potassium | 57 | 14 |
| Levothyroxine Sodium | 57 | 15 |
| Amlodipine Besylate | 43 | 16 |
| Lisinopril | 42 | 18 |
| Atorvastatin Calcium | 34 | 16 |
| Prednisone |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$20 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
Additional practice locations (1)
- 90 Hope Dr Bldg 6000Mountain Home Afb, ID 83648-1062Phone: (208) 828-7635
Registry dates
- Enumerated
- 2012-12-26
- Last updated
- 2025-10-07
- Certified
- 2025-10-07
Frequently asked questions
- What is Mary Clark's NPI number?
- Mary Clark's National Provider Identifier (NPI) is 1891031621, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Clark's specialty?
- Mary Clark is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Clark located?
- Mary Clark's practice location on file with NPPES is 824 Huntington Ave, Warren, IN 46792-9277.
- What is Mary Clark's phone number?
- The practice phone number listed in the NPPES registry for Mary Clark is (260) 375-2965.
- Does Mary Clark accept Medicare?
- Mary Clark is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Clark's NPI active?
- Yes — Mary Clark's NPI (1891031621) is active in the NPPES registry as of the last update on 2025-10-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.