ADRIENNE HART LONG MD, PHD
NPI 1679968630
Pediatrics - Pediatric Hematology-Oncology in Palo Alto, CA
About Adrienne Hart Long Md, Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ADRIENNE HART LONG MD, PHD (NPI 1679968630) is an individual pediatric hematology-oncology provider in Palo Alto, California, licensed in California (A161307) and active in the NPI registry since April 2015. She is enrolled in Medicare PECOS and is a graduate of Other (2016).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Adrienne Hart Long Md, Phd is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Adrienne Long reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Palo Alto, CA 94304
- Reassigned Medicare billing, California enrollment
- 3,617 clinicians in this Medicare group
Stanford, CA 94305
- Reassigned Medicare billing, California enrollment
- 4,258 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Adrienne Long's NPI number?
The NPI number for Adrienne Long is 1679968630. It was assigned to this individual provider in the NPPES registry on April 6, 2015. The provider is also known as Adrienne Hart Smith.
Where is Adrienne Long located?
Adrienne Long practices at 725 Welch Rd, Palo Alto, CA 94304. The listed phone number is (650) 497-8000.
What is Adrienne Long's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Hematology-Oncology, with taxonomy code 2080P0207X.
Is Adrienne Long enrolled in Medicare?
Yes. Adrienne Long is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Adrienne Long's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Adrienne Long reassigns Medicare benefits to 2 organizations: Lpch Medical Group Div Of Lucile (Palo Alto, CA) and Stanford Health Care (Stanford, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Adrienne Long's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Adrienne Long was last updated on April 16, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Adrienne Hart Long, MD, PHD · NPI 1679968630
Pediatric Hematology-Oncology physician in Palo Alto, California. Individual provider, active in the CMS NPPES registry since April 6, 2015.
## Identity
- **NPI:** 1679968630 (Entity type: Individual)
- **Enumerated:** April 6, 2015
- **Primary specialty:** Pediatrics - Pediatric Hematology-Oncology · taxonomy 2080P0207X
- **State license:** A161307 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 725 WELCH RD, Palo Alto, CA 94304-1601
- **Phone:** (650) 497-8000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Lpch Medical Group Div Of Lucile (NPI 1417907940, Palo Alto, CA); Stanford Health Care (NPI 1437292927, Stanford, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** April 16, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1679968630) · Data from the CMS NPPES public registry.