Thomas Zikos, M.D.
NPI 1801162904 · Internal Medicine Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Zikos, M.D. is a Internal Medicine Physician provider in Stanford, CA (NPI 1801162904).
Provider details
- NPI number
- 1801162904
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A126604 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
14 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 145 | 78 |
| Lubiprostone | 27 | 13 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 23 | 18 |
| Pantoprazole Sodium | 22 | — |
| Metronidazole | 19 | 15 |
| Prucalopride Succinatebrand: Motegrity | 16 | — |
| Linaclotidebrand: Linzess | 15 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$60 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
- 2012-03-22
- Last updated
- 2021-11-29
- Certified
- 2021-11-24
Frequently asked questions
- What is Thomas Zikos's NPI number?
- Thomas Zikos's National Provider Identifier (NPI) is 1801162904, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Zikos's specialty?
- Thomas Zikos is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Zikos located?
- Thomas Zikos's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Thomas Zikos's phone number?
- The practice phone number listed in the NPPES registry for Thomas Zikos is (650) 723-6661.
- Does Thomas Zikos accept Medicare?
- Thomas Zikos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Zikos's NPI active?
- Yes — Thomas Zikos's NPI (1801162904) is active in the NPPES registry as of the last update on 2021-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.