Mark Chanasue, MD
NPI 1366904757 · Psychiatry Physician · Ossining, NY
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Chanasue, MD is a Psychiatry Physician provider in Ossining, NY (NPI 1366904757).
Provider details
- NPI number
- 1366904757
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 2024022228 (MO)
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
7 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 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.
Practice location
Mailing address
Additional practice locations (1)
- 3009 N Ballas RdDept Psychiatry, Ste 141aSaint Louis, MO 63131-2322Phone: (314) 286-1700Fax: (314) 627-7225
Registry dates
- Enumerated
- 2019-04-03
- Last updated
- 2026-03-24
- Certified
- 2026-03-24
Frequently asked questions
- What is Mark Chanasue's NPI number?
- Mark Chanasue's National Provider Identifier (NPI) is 1366904757, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Chanasue's specialty?
- Mark Chanasue is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Chanasue located?
- Mark Chanasue's practice location on file with NPPES is 22 Rockledge Ave, Ossining, NY 10562-5960.
- What is Mark Chanasue's phone number?
- The practice phone number listed in the NPPES registry for Mark Chanasue is (914) 944-5220.
- Does Mark Chanasue accept Medicare?
- Mark Chanasue is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Chanasue's NPI active?
- Yes — Mark Chanasue's NPI (1366904757) is active in the NPPES registry as of the last update on 2026-03-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.