Robert Southmayd, D.O.
NPI 1982700969 · Internal Medicine Physician · Ceres, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Southmayd, D.O. is a Internal Medicine Physician provider in Ceres, CA (NPI 1982700969).
Provider details
- NPI number
- 1982700969
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 5298 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azithromycin | 92 | 88 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 58 | 54 |
| Ibuprofen | 28 | 28 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 26 | 24 |
| Nirmatrelvir/Ritonavirbrand: Paxlovid | 25 | 25 |
| Promethazine/Dextromethorphanbrand: Promethazine-Dm | 24 | 22 |
| Amlodipine Besylate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-16
- Last updated
- 2025-10-22
- Certified
- 2025-10-22
Frequently asked questions
- What is Robert Southmayd's NPI number?
- Robert Southmayd's National Provider Identifier (NPI) is 1982700969, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Southmayd's specialty?
- Robert Southmayd is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Southmayd located?
- Robert Southmayd's practice location on file with NPPES is 1768 Mitchell Rd Ste 301, Ceres, CA 95307-2156.
- What is Robert Southmayd's phone number?
- The practice phone number listed in the NPPES registry for Robert Southmayd is (209) 353-4838.
- Does Robert Southmayd accept Medicare?
- Robert Southmayd is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Southmayd's NPI active?
- Yes — Robert Southmayd's NPI (1982700969) is active in the NPPES registry as of the last update on 2025-10-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.