NPPES file of Aug 9, 2026

Warren John Maas, MA, LP, JD

Group Psychotherapy Psychologist · Saint Paul, MN

Warren John Maas, MA, LP, JD is a group psychotherapy psychologist with a practice address in Saint Paul, Minnesota, and NPI 1912086588, issued on Nov 3, 2006. Check the license (Minnesota LP1091, as entered in NPPES) with the Minnesota 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
1912086588
Name
Warren John Maas
Credential
MA, LP, JD
Primary taxonomy
Group Psychotherapy Psychologist 103TP2701X
License number
LP1091 MN
Self-reported in NPPES; status is on the state search
Practice location
1821 University Ave W, Saint Paul, MN 55104
Phone
(651) 644-8515
Enumerated
Nov 3, 2006
Record last updated
Sep 11, 2025
Fax
(651) 644-3451
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest group psychotherapy psychologist records → All 14 in Minnesota → Look up another NPI →

Also registered at 1821 University Ave W

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Verify Warren John Maas in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Minnesota board licenses this profession
    Search for license LP1091    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 Minnesota license search

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Warren John Maas among 14 group psychotherapy psychologist records in Minnesota

Warren John Maas, MA, LP, JD is one of 14 group psychotherapy psychologist records with a practice address in Minnesota. 0% 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 0% of them.

  • NPI issued2006 · 0% of these records are older, 36% newer
  • In a Medicare fileNo · 0% of these records are
  • In the CMS Doctors and Clinicians fileNo · 0% of these records are
  • Record last updated2025 · 29% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TP2701X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Group Psychotherapy Psychologist providers in Minnesota

There are 14 group psychotherapy psychologist records in Minnesota. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 14 in Minnesota → Every provider in Saint Paul → Group Psychotherapy Psychologist nationwide →

The 8 group psychotherapy psychologist records with the nearest ZIP codes

  1. Laura Boe, M.A. L.P.Saint Paul, MN 551041548475296
  2. David Dipman, PHD LPSaint Paul, MN 551041386723161
  3. Nathaniel Stewart, M.A., L.P.Saint Paul, MN 551041225199052
  4. Jane Rauenhorst, PH.D.Saint Paul, MN 551081396831962
  5. Ann Zaiser, M.S. LPAnoka, MN 553031043339740
  6. Mark Miller, PSY.D., L.P.Minneapolis, MN 554071184665390
  7. Stephen Huot, M.EQ., LPMinneapolis, MN 554081700905486
  8. Christopher Schiffer, LPMinneapolis, MN 554081154954857

Common questions

What is Warren John Maas, MA, LP, JD's NPI number?

Warren John Maas, MA, LP, JD's National Provider Identifier (NPI) is 1912086588, issued on Nov 3, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Warren John Maas, MA, LP, JD located?

The NPPES record lists a practice address at 1821 University Ave W, Saint Paul, MN, 55104. Phone: (651) 644-8515. Providers update this record themselves, so call before visiting.

How can I verify Warren John Maas, MA, LP, JD's license?

NPPES lists Minnesota license number LP1091, as entered by the provider. Search the Minnesota 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.