IndividualActive
William Lotak, PSY.D
NPI 1639237902 · Psychologist · Munster, IN
William Lotak, PSY.D is a Psychologist provider in Munster, IN (NPI 1639237902).
Provider details
- NPI number
- 1639237902
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D
- Sex
- Male
- Sole proprietor
- Yes
- License
- 20041350A (IN)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
32 Ridge Rd
Munster, IN 46321-1518
Phone: (219) 836-8806
Fax: (219) 922-9299
Street-level locationGet directions
Mailing address
10105 Wellington Ter
Munster, IN 46321-4373
Registry dates
- Enumerated
- 2006-12-05
- Last updated
- 2007-07-09
Frequently asked questions
- What is William Lotak's NPI number?
- William Lotak's National Provider Identifier (NPI) is 1639237902, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Lotak's specialty?
- William Lotak is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is William Lotak located?
- William Lotak's practice location on file with NPPES is 32 Ridge Rd, Munster, IN 46321-1518.
- What is William Lotak's phone number?
- The practice phone number listed in the NPPES registry for William Lotak is (219) 836-8806.
- Is William Lotak's NPI active?
- Yes — William Lotak's NPI (1639237902) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.