Sarah Hafner, APN
NPI 1851651731 · Family Nurse Practitioner · Chattanooga, TN
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sarah Hafner, APN is a Family Nurse Practitioner provider in Chattanooga, TN (NPI 1851651731).
Provider details
- NPI number
- 1851651731
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APN
- Sex
- Female
- Sole proprietor
- Yes
- License
- 16685 (TN)
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 tenure28% of score
14 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
54 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) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 54 | $135 |
Typical Medicare-allowed amounts for these services range $135–$135 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-05-24
- Last updated
- 2016-09-30
Frequently asked questions
- What is Sarah Hafner's NPI number?
- Sarah Hafner's National Provider Identifier (NPI) is 1851651731, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sarah Hafner's specialty?
- Sarah Hafner is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sarah Hafner located?
- Sarah Hafner's practice location on file with NPPES is 941 Spring Creek Rd, Chattanooga, TN 37412-3909.
- What is Sarah Hafner's phone number?
- The practice phone number listed in the NPPES registry for Sarah Hafner is (423) 894-7870.
- Does Sarah Hafner accept Medicare?
- Sarah Hafner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sarah Hafner's NPI active?
- Yes — Sarah Hafner's NPI (1851651731) is active in the NPPES registry as of the last update on 2016-09-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.