NPPES file of Aug 9, 2026

Buffy Jean Cramer-Hammann, PSY.D.

Psychologist · Naperville, IL

Buffy Jean Cramer-Hammann, PSY.D. is a psychologist with a practice address in Naperville, Illinois, and NPI 1821012873, issued on Jul 26, 2006. Check the license (Illinois 071006448, as entered in NPPES) with the Illinois board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1821012873
Name
Buffy Jean Cramer-Hammann
Credential
PSY.D.
Primary taxonomy
Psychologist 103T00000X
License number
071006448 IL
Self-reported in NPPES; status is on the state search
Practice location
608 S Washington St, Naperville, IL 60540
Phone
(630) 305-3020
Enumerated
Jul 26, 2006
Record last updated
Jan 23, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(630) 305-3660
Medicare enrollment
Enrolled (PECOS I20070621000698); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest psychologist records → All 1,011 in Illinois → Look up another NPI →

Also registered at 608 S Washington St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Michael Cassano, O.D.Optometrist1730138801
  2. Suzanne DimenteWound Care Registered Nurse1770962490
  3. Laura Faynor-Ciha, PH.D.Clinical Psychologist1922159839
  4. Mary Foote, RN MSN CANP CWCN ED.Gerontology Clinical Nurse Specialist1548265325
  5. Kathryn Gordon, M.D.Obstetrics & Gynecology Physician1285928085
  6. Kathleen Lademann, RN MSN APN CWCNChronic Care Clinical Nurse Specialist1518947555

Verify Buffy Jean Cramer-Hammann in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this profession
    Search for license 071006448    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Illinois license search

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Buffy Jean Cramer-Hammann among 1,011 psychologist records in Illinois

Buffy Jean Cramer-Hammann, PSY.D. is one of 1,011 psychologist records with a practice address in Illinois. 11% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 3% of them.

  • NPI issued2006 · 3% of these records are older, 75% newer
  • In a Medicare fileNo · 11% of these records are
  • In the CMS Doctors and Clinicians fileYes · 20% of these records are
  • Graduated2001 · median 2001 among the 201 with a school on file
  • Record last updated2013 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Psychologist providers in Illinois

There are 1,011 psychologist records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,011 in Illinois → Every provider in Naperville → Psychologist nationwide →

The 8 psychologist records with the nearest ZIP codes

  1. Susan Andrews, PHDNaperville, IL 605401093802324
  2. Daniel Hynan, PHDNaperville, IL 605401649363029
  3. Chrystiana Jones, PSY.D.Naperville, IL 605401437935822
  4. Jeffry Manasse, PSYDNaperville, IL 605401568470771
  5. John Martin, PH.D.Naperville, IL 605401417921271
  6. Robert Musikantow, PHDNaperville, IL 605401558433284
  7. Cynthia Navin-O'MearaNaperville, IL 605401124573886
  8. Elizabeth Schipman, PSYDNaperville, IL 605401205537305

Common questions

What is Buffy Jean Cramer-Hammann, PSY.D.'s NPI number?

Buffy Jean Cramer-Hammann, PSY.D.'s National Provider Identifier (NPI) is 1821012873, issued on Jul 26, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Buffy Jean Cramer-Hammann, PSY.D. located?

The NPPES record lists a practice address at 608 S Washington St, Naperville, IL, 60540. Phone: (630) 305-3020. Providers update this record themselves, so call before visiting.

How can I verify Buffy Jean Cramer-Hammann, PSY.D.'s license?

NPPES lists Illinois license number 071006448, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.