NPPES file of Aug 9, 2026

Calvin D. Ruff, LMSW

Clinical Social Worker · Kalamazoo, MI

Calvin D. Ruff, LMSW is a clinical social worker with a practice address in Kalamazoo, Michigan, and NPI 1831436336, issued on Jan 4, 2013. Check the license (Michigan 6801114624, as entered in NPPES) with the Michigan 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
1831436336
Name
Calvin D. Ruff
Credential
LMSW
Primary taxonomy
Clinical Social Worker 1041C0700X
License number
6801114624 MI
Self-reported in NPPES; status is on the state search
Practice location
625 Harrison St, Kalamazoo, MI 49007
Phone
(269) 323-1954
Enumerated
Jan 4, 2013
Record last updated
Feb 4, 2026
Fax
(269) 276-0201
Medicare enrollment
Enrolled (PECOS I20220720001910); 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 clinical social worker records → All 17,644 in Michigan → Look up another NPI →

Also registered at 625 Harrison St

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

  1. Cathy Brown, MSAddiction (Substance Use Disorder) Counselor1679106660
  2. Darice Darby, TLLPCounseling Psychologist1336685692
  3. Bunny Johnson, LLMSWAddiction (Substance Use Disorder) Counselor1750861027
  4. Melanie Lockett, LLMSWSocial Worker1790328813
  5. Joann Marcilous, LLMSWClinical Social Worker1992163570
  6. Shirley MooreClinical Social Worker1972930808

Verify Calvin D. Ruff in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Michigan board licenses this profession
    Search for license 6801114624    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 Michigan license search

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Calvin D. Ruff among 17,644 clinical social worker records in Michigan

Calvin D. Ruff, LMSW is one of 17,644 clinical social worker records with a practice address in Michigan. 14% 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 2013, is newer than 33% of them.

  • NPI issued2013 · 33% of these records are older, 62% newer
  • In a Medicare fileNo · 14% of these records are
  • In the CMS Doctors and Clinicians fileYes · 20% of these records are
  • Graduated2017 · median 2012 among the 3,587 with a school on file
  • Record last updated2026 · 52% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

470 clinical social worker records list a practice address in Kalamazoo

They are 470 of the 6,553 NPPES records with a practice address in Kalamazoo, and 17,644 clinical social worker records in Michigan. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 17,644 in Michigan → Every provider in Kalamazoo → Clinical Social Worker nationwide →

The 8 clinical social worker records with the nearest ZIP codes

  1. Gwendolyn Abney-Cunningham, LMSWKalamazoo, MI 490071699883504
  2. Alexandra Chapa, MSW, LMSWKalamazoo, MI 490071780725176
  3. Christine Cherry, CSW, LMSWKalamazoo, MI 490071841378080
  4. Phyllis Dewaters, LMSWKalamazoo, MI 490071053412577
  5. Randall Estes, LMSWKalamazoo, MI 490071689625238
  6. Eleanor Harris, MSWKalamazoo, MI 490071811003932
  7. Mary Hoekstra, LMSW CAAC ACSW BCDKalamazoo, MI 490071932276037
  8. Phillip Johnson, LMSWKalamazoo, MI 490071790894970

Common questions

What is Calvin D. Ruff, LMSW's NPI number?

Calvin D. Ruff, LMSW's National Provider Identifier (NPI) is 1831436336, issued on Jan 4, 2013. An NPI identifies a provider in billing; it is not a license.

Where is Calvin D. Ruff, LMSW located?

The NPPES record lists a practice address at 625 Harrison St, Kalamazoo, MI, 49007. Phone: (269) 323-1954. Providers update this record themselves, so call before visiting.

How can I verify Calvin D. Ruff, LMSW's license?

NPPES lists Michigan license number 6801114624, as entered by the provider. Search the Michigan 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.