Mary Zimmermann, ACNS-BC
NPI 1639337546 · Adult Health Clinical Nurse Specialist · Fort Worth, TX
Enrolled with Medicare as Practitioner - Certified Clinical Nurse Specialist (cns) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Zimmermann, ACNS-BC is a Adult Health Clinical Nurse Specialist provider in Fort Worth, TX (NPI 1639337546).
Provider details
- NPI number
- 1639337546
- Entity type
- Individual
- Primary specialty
- Adult Health Clinical Nurse SpecialistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ACNS-BC
- Sex
- Female
- Sole proprietor
- Yes
- License
- 662977 (TX)
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
18 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
108 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 72 | $175 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 36 | $98 |
Typical Medicare-allowed amounts for these services range $98–$175 (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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$308 across 5 records (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
- 2008-05-28
- Last updated
- 2009-09-23
Frequently asked questions
- What is Mary Zimmermann's NPI number?
- Mary Zimmermann's National Provider Identifier (NPI) is 1639337546, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Zimmermann's specialty?
- Mary Zimmermann is listed in the NPPES registry with a primary specialty of Adult Health Clinical Nurse Specialist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Zimmermann located?
- Mary Zimmermann's practice location on file with NPPES is 1319 Summit Ave Ste 200, Fort Worth, TX 76102-4432.
- What is Mary Zimmermann's phone number?
- The practice phone number listed in the NPPES registry for Mary Zimmermann is (817) 336-0551.
- Does Mary Zimmermann accept Medicare?
- Mary Zimmermann is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Zimmermann's NPI active?
- Yes — Mary Zimmermann's NPI (1639337546) is active in the NPPES registry as of the last update on 2009-09-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.