Samuel Fantaye, MD
NPI 1336677186 · Endocrinology, Diabetes & Metabolism Physician · Castro Valley, CA
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Samuel Fantaye, MD is a Endocrinology, Diabetes & Metabolism Physician provider in Castro Valley, CA (NPI 1336677186).
Provider details
- NPI number
- 1336677186
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A169452 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
351 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 131 | $136 |
| 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 | 123 | $17 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 40 | $166 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 29 | $37 |
| Blood Glucose (sugar) Level82947 | 16 | $4 |
| Injection of Drug Or Substance Under Skin Or Into Muscle |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 133 | 48 |
| Tirzepatidebrand: Mounjaro | 108 | 30 |
| Metformin Hcl | 75 | 20 |
| Semaglutidebrand: Ozempic | 60 | 19 |
| Semaglutidebrand: Rybelsus | 32 | 11 |
| Dulaglutidebrand: Trulicity | 31 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$71 across 2 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
Registry dates
- Enumerated
- 2017-05-24
- Last updated
- 2024-10-08
- Certified
- 2024-10-08
Frequently asked questions
- What is Samuel Fantaye's NPI number?
- Samuel Fantaye's National Provider Identifier (NPI) is 1336677186, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Samuel Fantaye's specialty?
- Samuel Fantaye is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Samuel Fantaye located?
- Samuel Fantaye's practice location on file with NPPES is 20642 John Dr, Castro Valley, CA 94546-5103.
- What is Samuel Fantaye's phone number?
- The practice phone number listed in the NPPES registry for Samuel Fantaye is (510) 857-2559.
- Does Samuel Fantaye accept Medicare?
- Samuel Fantaye is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Samuel Fantaye's NPI active?
- Yes — Samuel Fantaye's NPI (1336677186) is active in the NPPES registry as of the last update on 2024-10-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.