Massud Weiss
NPI 1013411404 · Family Medicine Physician · San Marcos, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Massud Weiss is a Family Medicine Physician provider in San Marcos, CA (NPI 1013411404).
Provider details
- NPI number
- 1013411404
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- A173590 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 99 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 374 | 162 |
| Meloxicam | 226 | 101 |
| Amlodipine Besylate | 212 | 93 |
| Levothyroxine Sodium | 189 | 76 |
| Lisinopril | 187 | 84 |
| Losartan Potassium | 184 | 78 |
| Gabapentin | 176 |
Practice location
Mailing address
Additional practice locations (1)
- 315 Mercy AveMerced, CA 95340-8363Phone: (209) 564-3513
Registry dates
- Enumerated
- 2018-03-20
- Last updated
- 2024-05-10
- Certified
- 2024-05-10
Frequently asked questions
- What is Massud Weiss's NPI number?
- Massud Weiss's National Provider Identifier (NPI) is 1013411404, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Massud Weiss's specialty?
- Massud Weiss is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Massud Weiss located?
- Massud Weiss's practice location on file with NPPES is 400 Craven Rd, San Marcos, CA 92078-4201.
- What is Massud Weiss's phone number?
- The practice phone number listed in the NPPES registry for Massud Weiss is (833) 574-2273.
- Does Massud Weiss accept Medicare?
- Massud Weiss is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Massud Weiss's NPI active?
- Yes — Massud Weiss's NPI (1013411404) is active in the NPPES registry as of the last update on 2024-05-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.