Sierra Schaller-Mahl, CRNP
Primary Care Nurse Practitioner · Johnstown, PA
Sierra Schaller-Mahl, CRNP is a primary care nurse practitioner with a practice address in Johnstown, Pennsylvania, and NPI 1649927005, issued on Mar 7, 2022. Check the license (Pennsylvania SP025431, as entered in NPPES) with the Pennsylvania board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Sierra Schaller-Mahl
- Credential
- CRNP
- Primary taxonomy
- Primary Care Nurse Practitioner 363LP2300X
- License number
- SP025431 PA
Self-reported in NPPES; status is on the state search - Practice location
- 100 Hostetler RD, Johnstown, PA 15904
- Phone
- (814) 240-3432
- Enumerated
- Mar 7, 2022
- Record last updated
- Mar 7, 2022
- Medicare enrollment
- Enrolled (PECOS I20220804000154); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest primary care nurse practitioner records → All 481 in Pennsylvania → Look up another NPI →
Also registered at 100 Hostetler RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Stephen Matse, DOInternal Medicine Physician1427054642
Verify Sierra Schaller-Mahl in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
Search for license SP025431Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Dlp Conemaugh Physician Practices LLCCresson, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sierra Schaller-Mahl among 481 primary care nurse practitioner records in Pennsylvania
Sierra Schaller-Mahl, CRNP is one of 481 primary care nurse practitioner records with a practice address in Pennsylvania. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 63% of them.
- NPI issued2022 · 63% of these records are older, 26% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated2021 · median 2020 among the 252 with a school on file
- Record last updated2022 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP2300X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Primary Care Nurse Practitioner providers in Pennsylvania
There are 481 primary care nurse practitioner records in Pennsylvania.
All 481 in Pennsylvania → Every provider in Johnstown → Primary Care Nurse Practitioner nationwide →
The 8 primary care nurse practitioner records with the nearest ZIP codes
- Julie Lesneski, NPJohnstown, PA 159041528470846
- Katelyn Niebauer, CRNPJohnstown, PA 159041235965344
- Cheryl Stape, CRNPJohnstown, PA 159041942089016
- Bethany Walerysiak, CRNPJohnstown, PA 159041477092716
- Mollie McGuire, CRNPJohnstown, PA 159051922573435
- Amanda Huber, CRNPButler, PA 160011588298350
- Brenna McPherson, CRNPButler, PA 160011942966353
- Maria Johnston, CRNPDu Bois, PA 158011700539798
Common questions
What is Sierra Schaller-Mahl, CRNP's NPI number?
Sierra Schaller-Mahl, CRNP's National Provider Identifier (NPI) is 1649927005, issued on Mar 7, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Sierra Schaller-Mahl, CRNP located?
The NPPES record lists a practice address at 100 Hostetler RD, Johnstown, PA, 15904. Phone: (814) 240-3432. Providers update this record themselves, so call before visiting.
How can I verify Sierra Schaller-Mahl, CRNP's license?
NPPES lists Pennsylvania license number SP025431, as entered by the provider. Search the Pennsylvania board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.