Nikolaos Zacharias, MD - Medicare Obstetrics & Gynecology in Houston, TX

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Nikolaos Zacharias, MD is a medicare enrolled "Obstetrics & Gynecology - Maternal & Fetal Medicine" physician in Houston, Texas. His current practice location is 5656 Kelley Street, Dept Of Ob/gyn Room # 2ld80 001, Houston, Texas. You can reach out to his office (for appointments etc.) via phone at (713) 566-5976.

Nikolaos Zacharias is licensed to practice in Texas (license number M2219) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1972683225.

Contact Information

Nikolaos Zacharias, MD
5656 Kelley Street, Dept Of Ob/gyn Room # 2ld80 001,
Houston, TX 77026
(713) 566-5976
(713) 566-4521

Map and Direction




Physician's Profile

Full NameNikolaos Zacharias
GenderMale
SpecialityObstetrics & Gynecology - Maternal & Fetal Medicine
Location5656 Kelley Street, Houston, Texas
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1972683225
  • Provider Enumeration Date: 10/17/2006
  • Last Update Date: 12/19/2014
  Medicare PECOS Information:
  • PECOS PAC ID: 6901824358
  • Enrollment ID: I20051104000213

Medical Identifiers

Medical identifiers for Nikolaos Zacharias such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1972683225NPI-NPPES
M2219OtherTXTEXAS MEDICAL BOARD

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207VM0101XObstetrics & Gynecology - Maternal & Fetal Medicine M2219 (Texas)Primary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Nikolaos Zacharias allows following entities to bill medicare on his behalf.
Entity NameUt Physicians
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1033157821
PECOS PAC ID: 8426960360
Enrollment ID: O20031107000268
Entity NameObstetrix Medical Group Of Texas Billing, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1568486264
PECOS PAC ID: 2365342938
Enrollment ID: O20040110000026

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Nikolaos Zacharias is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Nikolaos Zacharias, MD
6431 Fannin, Msb 3.286,
Houston, TX 77030

Ph: (713) 500-6412		Nikolaos Zacharias, MD
5656 Kelley Street, Dept Of Ob/gyn Room # 2ld80 001,
Houston, TX 77026

Ph: (713) 566-5976

Reviews and Comments


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Dr. Kimberly R Miller-miles, M.D.
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Practice Location: 7900 Fannin St Ste 4400, Women's Pelvic Restorative Center, Pllc, Houston, TX 77054
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Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.