ASHWIN GURIJALA RAMAYYA MD, PHD
NPI 1992150205
Neurological Surgery in Stanford, CA
About Ashwin Gurijala Ramayya Md, Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ASHWIN GURIJALA RAMAYYA MD, PHD (NPI 1992150205) is an individual neurological surgery provider in Stanford, California, licensed in California (A184508) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS, maintains a secondary practice location in Philadelphia, and is a graduate of Perelman School Of Med At The University Of Pennsylvania (2016).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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
Ashwin Gurijala Ramayya 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
4Medicare enrollment records show Ashwin Ramayya reassigns Medicare billing to 4 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
Palo Alto, CA 94306
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1588721500 (California), NPI 1629301346 (California)
- 2,460 clinicians in this Medicare group
Belmont, CA 94002
- Reassigned Medicare billing, California enrollment
- 1,191 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 4
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 Ashwin Ramayya's NPI number?
The NPI number for Ashwin Ramayya is 1992150205. It was assigned to this individual provider in the NPPES registry on April 25, 2016.
Where is Ashwin Ramayya located?
Ashwin Ramayya practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.
What is Ashwin Ramayya's specialty?
The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.
Is Ashwin Ramayya enrolled in Medicare?
Yes. Ashwin Ramayya 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 Ashwin Ramayya's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ashwin Ramayya reassigns Medicare benefits to 4 organizations: Stanford Health Care (Stanford, CA), Lpch Medical Group Div Of Lucile (Palo Alto, CA), County Of Santa Clara (Palo Alto, CA) and Dignity Health Medical Foundation (Belmont, 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 Ashwin Ramayya'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 Ashwin Ramayya was last updated on April 26, 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.
# Ashwin Gurijala Ramayya, MD, PHD · NPI 1992150205
Neurological Surgery physician in Stanford, California. Individual provider, active in the CMS NPPES registry since April 25, 2016.
## Identity
- **NPI:** 1992150205 (Entity type: Individual)
- **Enumerated:** April 25, 2016
- **Primary specialty:** Neurological Surgery · taxonomy 207T00000X
- **State license:** A184508 (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:** 4 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); County Of Santa Clara (NPI 1144330614, Palo Alto, CA); Dignity Health Medical Foundation (NPI 1174531859, Belmont, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Perelman School Of Med At The University Of Pennsylvania, class of 2016
## Record status
- **NPPES last updated:** April 26, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1992150205) · Data from the CMS NPPES public registry.