HEATHER SIOBHAN CALDERWOOD PA-C
NPI 1033952270
Physician Assistant in Stanford, CA
About Heather Siobhan Calderwood Pa-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HEATHER SIOBHAN CALDERWOOD PA-C (NPI 1033952270) is an individual physician assistant in Stanford, California, licensed in California (67340) and active in the NPI registry since June 2024. She is enrolled in Medicare PECOS, maintains a secondary practice location in Houston, and is a graduate of Other (2024).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Heather Siobhan Calderwood Pa-c 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94305 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
STANFORD, CA 94305
STANFORD, CA 94305
STANFORD, CA 94305
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 Heather Calderwood's NPI number?
The NPI number for Heather Calderwood is 1033952270. It was assigned to this individual provider in the NPPES registry on June 17, 2024.
Where is Heather Calderwood located?
Heather Calderwood practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.
What is Heather Calderwood's specialty?
The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.
Is Heather Calderwood enrolled in Medicare?
Yes. Heather Calderwood 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.
What insurance does Heather Calderwood accept?
Health plans from Community Health Choice and Molina Healthcare list Heather Calderwood as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Heather Calderwood was last updated on March 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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.
# Heather Siobhan Calderwood, PA-C · NPI 1033952270
Physician Assistant physician in Stanford, California. Individual provider, active in the CMS NPPES registry since June 17, 2024.
## Identity
- **NPI:** 1033952270 (Entity type: Individual)
- **Enumerated:** June 17, 2024
- **Primary specialty:** Physician Assistant · taxonomy 363A00000X
- **State license:** 67340 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 300 PASTEUR DR, Stanford, CA 94305-2200
- **Phone:** (650) 723-4000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** Other, class of 2024
## Record status
- **NPPES last updated:** March 9, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1033952270) · Data from the CMS NPPES public registry.