Carla Callao, MD
NPI 1275611808 · Internal Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Carla Callao, MD is a Internal Medicine Physician provider in San Francisco, CA (NPI 1275611808).
Provider details
- NPI number
- 1275611808
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A71491 (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
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 · 102 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 370 | 129 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 261 | 55 |
| Losartan Potassium | 237 | 76 |
| Amlodipine Besylate | 199 | 74 |
| Fluticasone Propionate | 171 | 70 |
| Famotidine | 136 | 55 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2022-01-14
Frequently asked questions
- What is Carla Callao's NPI number?
- Carla Callao's National Provider Identifier (NPI) is 1275611808, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Carla Callao's specialty?
- Carla Callao is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Carla Callao located?
- Carla Callao's practice location on file with NPPES is 2200 Ofarrell St, San Francisco, CA 94115-3357.
- What is Carla Callao's phone number?
- The practice phone number listed in the NPPES registry for Carla Callao is (415) 833-2000.
- Does Carla Callao accept Medicare?
- Carla Callao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Carla Callao's NPI active?
- Yes — Carla Callao's NPI (1275611808) is active in the NPPES registry as of the last update on 2022-01-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.