Buffy Cramer-Hammann, PSY.D.
NPI 1821012873 · Psychologist · Naperville, IL
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Buffy Cramer-Hammann, PSY.D. is a Psychologist provider in Naperville, IL (NPI 1821012873).
Provider details
- NPI number
- 1821012873
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 071006448 (IL)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2006-07-26
- Last updated
- 2013-01-23
Frequently asked questions
- What is Buffy Cramer-Hammann's NPI number?
- Buffy Cramer-Hammann's National Provider Identifier (NPI) is 1821012873, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Buffy Cramer-Hammann's specialty?
- Buffy Cramer-Hammann is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Buffy Cramer-Hammann located?
- Buffy Cramer-Hammann's practice location on file with NPPES is 608 S Washington St, Naperville, IL 60540-6663.
- What is Buffy Cramer-Hammann's phone number?
- The practice phone number listed in the NPPES registry for Buffy Cramer-Hammann is (630) 305-3020.
- Does Buffy Cramer-Hammann accept Medicare?
- Buffy Cramer-Hammann is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Buffy Cramer-Hammann's NPI active?
- Yes — Buffy Cramer-Hammann's NPI (1821012873) is active in the NPPES registry as of the last update on 2013-01-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.