MS. LARISSA GREBENCHTCHIKOVA M.D.
NPI 1093970766
Anesthesiology in Phoenix, AZ
About Ms. Larissa Grebenchtchikova M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. LARISSA GREBENCHTCHIKOVA M.D. (NPI 1093970766) is an individual anesthesiology provider in Phoenix, Arizona, licensed in Arizona (43833) and active in the NPI registry since July 2008. She is enrolled in Medicare PECOS, maintains 4 additional practice locations, and is a graduate of Other (2003).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 4
Other Identifiers 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
Ms. Larissa Grebenchtchikova M.d. 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
20Medicare enrollment records show Larissa Grebenchtchikova reassigns Medicare billing to 20 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Scottsdale, AZ 85258
- Reassigned Medicare billing, Arizona enrollment
- 106 clinicians in this Medicare group
Tucson, AZ 85712
- Reassigned Medicare billing, Arizona enrollment
- 264 clinicians in this Medicare group
Tucson, AZ 85747
- Reassigned Medicare billing, Arizona enrollment
- 204 clinicians in this Medicare group
Kingman, AZ 86409
- Reassigned Medicare billing, Arizona enrollment
- 418 clinicians in this Medicare group
Kingman, AZ 86409
- Reassigned Medicare billing, Arizona enrollment
- 41 clinicians in this Medicare group
Sierra Vista, AZ 85635
- Reassigned Medicare billing, Arizona enrollment
- 132 clinicians in this Medicare group
Sierra Vista, AZ 85635
- Reassigned Medicare billing, Arizona enrollment
- 128 clinicians in this Medicare group
La Quinta, CA 92253
- Reassigned Medicare billing, California enrollment
- 488 clinicians in this Medicare group
Laguna Hills, CA 92653
- Reassigned Medicare billing, California enrollment
- 833 clinicians in this Medicare group
Fresno, CA 93720
- Reassigned Medicare billing, Arizona and California enrollments
- 75 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
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.
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 Larissa Grebenchtchikova's NPI number?
The NPI number for Larissa Grebenchtchikova is 1093970766. It was assigned to this individual provider in the NPPES registry on July 22, 2008.
Where is Larissa Grebenchtchikova located?
Larissa Grebenchtchikova practices at 250 E Dunlap Ave, Phoenix, AZ 85020. The listed phone number is (602) 943-2381.
What is Larissa Grebenchtchikova's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Larissa Grebenchtchikova enrolled in Medicare?
Yes. Larissa Grebenchtchikova 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 Larissa Grebenchtchikova's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Larissa Grebenchtchikova reassigns Medicare benefits to 20 organizations: Grand Canyon Anesthesia LLC (Scottsdale, AZ), Ias Arizona PLLC (Tucson, AZ), Hospitalist Medicine Physicians Of Arizona - Nogales (Tucson, AZ), Kingman Healthcare, Inc (Kingman, AZ), Battle Born Anesthesia Associates Ltd (Kingman, AZ) and 15 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 Larissa Grebenchtchikova's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Larissa Grebenchtchikova accept?
Health plans from Blue Cross Blue Shield of Arizona, Cigna HealthCare of Arizona, Inc, Mountain Health CO-OP, Oscar Health Plan, Inc. and Oscar Insurance Company list Larissa Grebenchtchikova 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 Larissa Grebenchtchikova was last updated on September 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 41 days 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.
# Ms. Larissa Grebenchtchikova, M.D. · NPI 1093970766
Anesthesiology physician in Phoenix, Arizona. Individual provider, active in the CMS NPPES registry since July 22, 2008.
## Identity
- **NPI:** 1093970766 (Entity type: Individual)
- **Enumerated:** July 22, 2008
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 43833 (Arizona)
- **Sole proprietor:** No
## Practice location
- **Address:** 250 E DUNLAP AVE, Phoenix, AZ 85020-2825
- **Phone:** (602) 943-2381
## 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:** 20 organizations under Medicare reassignment (form CMS-855R): Grand Canyon Anesthesia LLC (NPI 1356822902, Scottsdale, AZ); Ias Arizona PLLC (NPI 1689359747, Tucson, AZ); Hospitalist Medicine Physicians Of Arizona - Nogales (NPI 1487251799, Tucson, AZ); Kingman Healthcare, Inc (NPI 1689897787, Kingman, AZ); Battle Born Anesthesia Associates Ltd (NPI 1629781455, Kingman, AZ); and 15 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2003
## Record status
- **NPPES last updated:** September 10, 2026
- **Other identifiers:** Medicaid 100230616 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1093970766) · Data from the CMS NPPES public registry.