Philip Janicak, M.D.
NPI 1891993754 · Psychiatry Physician · Naperville, IL
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Philip Janicak, M.D. is a Psychiatry Physician provider in Naperville, IL (NPI 1891993754).
Provider details
- NPI number
- 1891993754
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036-050070 (IL)
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
- 2007-07-03
- Last updated
- 2017-01-31
Frequently asked questions
- What is Philip Janicak's NPI number?
- Philip Janicak's National Provider Identifier (NPI) is 1891993754, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Philip Janicak's specialty?
- Philip Janicak is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Philip Janicak located?
- Philip Janicak's practice location on file with NPPES is 1335 N Mill St, Naperville, IL 60563-2261.
- What is Philip Janicak's phone number?
- The practice phone number listed in the NPPES registry for Philip Janicak is (630) 646-8000.
- Does Philip Janicak accept Medicare?
- Philip Janicak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Philip Janicak's NPI active?
- Yes — Philip Janicak's NPI (1891993754) is active in the NPPES registry as of the last update on 2017-01-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.