Charles Ihlenfeld, M.D.
NPI 1699773705 · Psychiatry Physician · Shelter Island Heights, NY
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Ihlenfeld, M.D. is a Psychiatry Physician provider in Shelter Island Heights, NY (NPI 1699773705).
Provider details
- NPI number
- 1699773705
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 092919 (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
- 2005-07-12
- Last updated
- 2013-09-05
Frequently asked questions
- What is Charles Ihlenfeld's NPI number?
- Charles Ihlenfeld's National Provider Identifier (NPI) is 1699773705, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Ihlenfeld's specialty?
- Charles Ihlenfeld is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Ihlenfeld located?
- Charles Ihlenfeld's practice location on file with NPPES is 14 South Menantic Road, Shelter Island Heights, NY 11965.
- What is Charles Ihlenfeld's phone number?
- The practice phone number listed in the NPPES registry for Charles Ihlenfeld is (631) 278-5127.
- Does Charles Ihlenfeld accept Medicare?
- Charles Ihlenfeld is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Ihlenfeld's NPI active?
- Yes — Charles Ihlenfeld's NPI (1699773705) is active in the NPPES registry as of the last update on 2013-09-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.