Hak Ko, MD
NPI 1154398055 · Psychiatry Physician · Williamsville, NY
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hak Ko, MD is a Psychiatry Physician provider in Williamsville, NY (NPI 1154398055).
Provider details
- NPI number
- 1154398055
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 137567 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-01
- Last updated
- 2010-07-05
Frequently asked questions
- What is Hak Ko's NPI number?
- Hak Ko's National Provider Identifier (NPI) is 1154398055, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hak Ko's specialty?
- Hak Ko is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Hak Ko located?
- Hak Ko's practice location on file with NPPES is 5687 Main St, Williamsville, NY 14221-5517.
- What is Hak Ko's phone number?
- The practice phone number listed in the NPPES registry for Hak Ko is (716) 204-3541.
- Does Hak Ko accept Medicare?
- Hak Ko is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hak Ko's NPI active?
- Yes — Hak Ko's NPI (1154398055) is active in the NPPES registry as of the last update on 2010-07-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.