Karen Mathewson, MD
NPI 1407054562 · Psychiatry Physician · New York, NY
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Mathewson, MD is a Psychiatry Physician provider in New York, NY (NPI 1407054562).
Provider details
- NPI number
- 1407054562
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 243439 (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
18 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
- 2007-07-10
- Last updated
- 2007-07-10
Frequently asked questions
- What is Karen Mathewson's NPI number?
- Karen Mathewson's National Provider Identifier (NPI) is 1407054562, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Mathewson's specialty?
- Karen Mathewson is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Mathewson located?
- Karen Mathewson's practice location on file with NPPES is 462 1st Ave, New York, NY 10016-9196.
- What is Karen Mathewson's phone number?
- The practice phone number listed in the NPPES registry for Karen Mathewson is (212) 562-4742.
- Does Karen Mathewson accept Medicare?
- Karen Mathewson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Mathewson's NPI active?
- Yes — Karen Mathewson's NPI (1407054562) is active in the NPPES registry as of the last update on 2007-07-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.