Ashwin Ramayya, MD, PHD
NPI 1992150205 · Neurological Surgery Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ashwin Ramayya, MD, PHD is a Neurological Surgery Physician provider in Stanford, CA (NPI 1992150205).
Provider details
- NPI number
- 1992150205
- Entity type
- Individual
- Primary specialty
- Neurological Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- A184508 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
202 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 57 | $204 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 57 | $19 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 30 | $163 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 23 | $19 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 18 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$285 across 6 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 3400 Spruce St3 Silverstein PavillionPhiladelphia, PA 19104-4238Phone: (215) 615-4390
Registry dates
- Enumerated
- 2016-04-25
- Last updated
- 2024-04-26
- Certified
- 2024-04-26
Frequently asked questions
- What is Ashwin Ramayya's NPI number?
- Ashwin Ramayya's National Provider Identifier (NPI) is 1992150205, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ashwin Ramayya's specialty?
- Ashwin Ramayya is listed in the NPPES registry with a primary specialty of Neurological Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Ashwin Ramayya located?
- Ashwin Ramayya's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Ashwin Ramayya's phone number?
- The practice phone number listed in the NPPES registry for Ashwin Ramayya is (650) 723-4000.
- Does Ashwin Ramayya accept Medicare?
- Ashwin Ramayya is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ashwin Ramayya's NPI active?
- Yes — Ashwin Ramayya's NPI (1992150205) is active in the NPPES registry as of the last update on 2024-04-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.