Nikolaos Zacharias, M.D.
NPI 1972683225 · Maternal & Fetal Medicine Physician · Houston, TX
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nikolaos Zacharias, M.D. is a Maternal & Fetal Medicine Physician provider in Houston, TX (NPI 1972683225).
Provider details
- NPI number
- 1972683225
- Entity type
- Individual
- Primary specialty
- Maternal & Fetal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- M2219 (TX)
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
19 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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$258 across 3 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
- 2006-10-17
- Last updated
- 2014-12-19
Frequently asked questions
- What is Nikolaos Zacharias's NPI number?
- Nikolaos Zacharias's National Provider Identifier (NPI) is 1972683225, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nikolaos Zacharias's specialty?
- Nikolaos Zacharias is listed in the NPPES registry with a primary specialty of Maternal & Fetal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nikolaos Zacharias located?
- Nikolaos Zacharias's practice location on file with NPPES is 5656 Kelley Street, Houston, TX 77026.
- What is Nikolaos Zacharias's phone number?
- The practice phone number listed in the NPPES registry for Nikolaos Zacharias is (713) 566-5976.
- Does Nikolaos Zacharias accept Medicare?
- Nikolaos Zacharias is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nikolaos Zacharias's NPI active?
- Yes — Nikolaos Zacharias's NPI (1972683225) is active in the NPPES registry as of the last update on 2014-12-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.