Ashwin Peres-Da-Silva, MD
NPI 1083143390 · Internal Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ashwin Peres-Da-Silva, MD is a Internal Medicine Physician provider in San Francisco, CA (NPI 1083143390).
Provider details
- NPI number
- 1083143390
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A166415 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,506 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 695 | $125 |
| Subsequent Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, at Least 45 Minutes99310 | 185 | $176 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 | 184 | $208 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 103 | $133 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 82 | $194 |
| Physician Or Allowed Practitioner Certification for Medicare-Covered Home Health Services Under a Home Health Plan of Care (patient Not Present), Including Contacts With Home Health Agency and Review of Reports of Patient Status Required By Physicians and |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 56 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 278 | 27 |
| Lisinopril | 197 | 12 |
| Furosemide | 129 | 16 |
| Mirtazapine | 126 | 11 |
| Gabapentin | 119 | 23 |
| Famotidine | 113 | — |
| Hydralazine Hcl | 111 | 18 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-06-08
- Last updated
- 2024-08-27
- Certified
- 2024-08-27
Frequently asked questions
- What is Ashwin Peres-Da-Silva's NPI number?
- Ashwin Peres-Da-Silva's National Provider Identifier (NPI) is 1083143390, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ashwin Peres-Da-Silva's specialty?
- Ashwin Peres-Da-Silva is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ashwin Peres-Da-Silva located?
- Ashwin Peres-Da-Silva's practice location on file with NPPES is 3555 Cesar Chavez, San Francisco, CA 94110-4403.
- What is Ashwin Peres-Da-Silva's phone number?
- The practice phone number listed in the NPPES registry for Ashwin Peres-Da-Silva is (415) 600-6000.
- Does Ashwin Peres-Da-Silva accept Medicare?
- Ashwin Peres-Da-Silva is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ashwin Peres-Da-Silva's NPI active?
- Yes — Ashwin Peres-Da-Silva's NPI (1083143390) is active in the NPPES registry as of the last update on 2024-08-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.