KRISTINA ELIZABETH HAWK MD/ PHD
NPI 1861784860
Radiology - Diagnostic Radiology in Stanford, CA
About Kristina Elizabeth Hawk Md/ Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KRISTINA ELIZABETH HAWK MD/ PHD (NPI 1861784860) is an individual diagnostic radiology provider in Stanford, California, licensed in California (A125036) and active in the NPI registry since May 2011. She is enrolled in Medicare PECOS, maintains a secondary practice location in San Diego, and is a graduate of Other (2006).
NPPES Registry Identity
Specialties & Licenses 3
Other Names 1
Secondary Practice Location 1
Accepted Insurance
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
Kristina Elizabeth Hawk 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
31Medicare enrollment records show Kristina Hawk reassigns Medicare billing to 31 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Stanford, CA 94305
- Reassigned Medicare billing, California enrollment
- 4,258 clinicians in this Medicare group
Palo Alto, CA 94304
- Reassigned Medicare billing, California enrollment
- 3,617 clinicians in this Medicare group
Fremont, CA 94538
- Reassigned Medicare billing, California enrollment
- 238 clinicians in this Medicare group
San Jose, CA 95131
- Reassigned Medicare billing, California enrollment
- 76 clinicians in this Medicare group
San Francisco, CA 94118
- Reassigned Medicare billing, California enrollment
- 219 clinicians in this Medicare group
Stockton, CA 95210
- Reassigned Medicare billing, California enrollment
- 219 clinicians in this Medicare group
Modesto, CA 95350
- Reassigned Medicare billing, California enrollment
- 219 clinicians in this Medicare group
Santa Rosa, CA 95403
- Reassigned Medicare billing, California enrollment
- 222 clinicians in this Medicare group
Sacramento, CA 95825
- Reassigned Medicare billing, California enrollment
- 220 clinicians in this Medicare group
Fresno, CA 93710
- Reassigned Medicare billing, California enrollment
- 232 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.
Areas of Expertise CMS Part B claims 16
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
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 Kristina Hawk's NPI number?
The NPI number for Kristina Hawk is 1861784860. It was assigned to this individual provider in the NPPES registry on May 9, 2011. The provider is also known as Kristina Elizabeth Bray.
Where is Kristina Hawk located?
Kristina Hawk practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.
What is Kristina Hawk's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Kristina Hawk enrolled in Medicare?
Yes. Kristina Hawk 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 Kristina Hawk's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kristina Hawk reassigns Medicare benefits to 31 organizations: Stanford Health Care (Stanford, CA), Lpch Medical Group Div Of Lucile (Palo Alto, CA), Norcal Imaging (Fremont, CA), Valley Radiology Medical Associates, Inc. (San Jose, CA), Radnet Medical Imaging-San Francisco (San Francisco, CA) and 26 more organizations, listed in the Medicare section above. 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 Kristina Hawk's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Kristina Hawk accept?
Health plans from Blue Cross and Blue Shield of Texas, Cigna HealthCare of Florida, Inc., Cigna Healthcare, Imperial Insurance Companies, Inc. and Oscar Health and 2 other insurers list Kristina Hawk 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 Kristina Hawk was last updated on February 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Kristina Elizabeth Hawk, MD/ PHD · NPI 1861784860
Diagnostic Radiology physician in Stanford, California. Individual provider, active in the CMS NPPES registry since May 9, 2011.
## Identity
- **NPI:** 1861784860 (Entity type: Individual)
- **Enumerated:** May 9, 2011
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **State license:** A125036 (California)
- **Sole proprietor:** No
## 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
- **Bills Medicare through:** 31 organizations under Medicare reassignment (form CMS-855R): Stanford Health Care (NPI 1437292927, Stanford, CA); Lpch Medical Group Div Of Lucile (NPI 1417907940, Palo Alto, CA); Norcal Imaging (NPI 1013031772, Fremont, CA); Valley Radiology Medical Associates, Inc. (NPI 1396703179, San Jose, CA); Radnet Medical Imaging-San Francisco (NPI 1548345382, San Francisco, CA); and 26 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2006
## Record status
- **NPPES last updated:** February 10, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1861784860) · Data from the CMS NPPES public registry.