Omar Mazher, M.D.
NPI 1558755777 · Psychiatry Physician · Alexandria, VA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Omar Mazher, M.D. is a Psychiatry Physician provider in Alexandria, VA (NPI 1558755777).
Provider details
- NPI number
- 1558755777
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 272821 (MA)
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 tenure38% of score
11 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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 · 1 distinct drug on file.
| Drug | Part D claims (2024) |
|---|---|
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (2)
- 330 Brookline AveBoston, MA 02215-5400Phone: (617) 667-6700Fax: (617) 667-5575
- 1020 First Colonial Rd Ste aVirginia Beach, VA 23454-3078Phone: (757) 395-5342
Registry dates
- Enumerated
- 2015-03-25
- Last updated
- 2026-02-26
- Certified
- 2026-02-26
Frequently asked questions
- What is Omar Mazher's NPI number?
- Omar Mazher's National Provider Identifier (NPI) is 1558755777, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Omar Mazher's specialty?
- Omar Mazher is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Omar Mazher located?
- Omar Mazher's practice location on file with NPPES is 2501 Parkers Ln, Alexandria, VA 22306-3209.
- What is Omar Mazher's phone number?
- The practice phone number listed in the NPPES registry for Omar Mazher is (703) 289-7560.
- Does Omar Mazher accept Medicare?
- Omar Mazher is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Omar Mazher's NPI active?
- Yes — Omar Mazher's NPI (1558755777) is active in the NPPES registry as of the last update on 2026-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.