Mary Vollmer-Sandholm, MSN, P.N.P.
NPI 1659575157 · Pediatric Nurse Practitioner · Loma Linda, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Vollmer-Sandholm, MSN, P.N.P. is a Pediatric Nurse Practitioner provider in Loma Linda, CA (NPI 1659575157).
Provider details
- NPI number
- 1659575157
- Entity type
- Individual
- Primary specialty
- Pediatric Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MSN, P.N.P.
- Sex
- Female
- Sole proprietor
- No
- License
- 533452 (CA)
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 tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- 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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$78 across 3 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
- 2007-06-11
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mary Vollmer-Sandholm's NPI number?
- Mary Vollmer-Sandholm's National Provider Identifier (NPI) is 1659575157, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Vollmer-Sandholm's specialty?
- Mary Vollmer-Sandholm is listed in the NPPES registry with a primary specialty of Pediatric Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Vollmer-Sandholm located?
- Mary Vollmer-Sandholm's practice location on file with NPPES is Loma Linda University School of Nursing, Loma Linda, CA 92350-0001.
- What is Mary Vollmer-Sandholm's phone number?
- The practice phone number listed in the NPPES registry for Mary Vollmer-Sandholm is (909) 558-1000.
- Does Mary Vollmer-Sandholm accept Medicare?
- Mary Vollmer-Sandholm is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Vollmer-Sandholm's NPI active?
- Yes — Mary Vollmer-Sandholm's NPI (1659575157) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.