NPPES file of Aug 9, 2026

Anne M. Karczewski, CRNA

Certified Registered Nurse Anesthetist · Portland, ME

Anne M. Karczewski, CRNA is a certified registered nurse anesthetist with a practice address in Portland, Maine, and NPI 1770534448, issued on May 15, 2006. Check the license (Maine RNA83025, as entered in NPPES) with the Maine board that licenses this profession; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1770534448
Name
Anne M. Karczewski
Credential
CRNA
Primary taxonomy
Certified Registered Nurse Anesthetist 367500000X
License number
RNA83025 ME
Self-reported in NPPES; status is on the state search
Practice location
33 Sewall St, Portland, ME 04102
Phone
(207) 828-2100
Enumerated
May 15, 2006
Record last updated
Aug 10, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(207) 553-7166
Medicaid ID
1770534448 ME
Medicare enrollment
Enrolled (PECOS I20060519000097); 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 certified registered nurse anesthetist records → All 534 in Maine → Look up another NPI →

Also registered at 33 Sewall St

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

  1. Paul Abbey, MOT, OTR/LOccupational Therapist1013434489
  2. Zachary AbbottPhysical Medicine & Rehabilitation Physician1013545797
  3. Dirk Asherman, M.D.Orthopaedic Foot and Ankle Surgery Physician1427057611
  4. Stephen Barr, M.D.Orthopaedic Surgery Physician1245228949
  5. Keith Bartlett, DPTPhysical Therapist1437826096
  6. Lucy Bauer, CRNACertified Registered Nurse Anesthetist1578634184

Verify Anne M. Karczewski in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Maine board licenses this profession
    Search for license RNA83025    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 Maine license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Spectrum Healthcare Partners PAPortland, ME

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Anne M. Karczewski among 534 certified registered nurse anesthetist records in Maine

Anne M. Karczewski, CRNA is one of 534 certified registered nurse anesthetist records with a practice address in Maine. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.

  • NPI issued2006 · 4% of these records are older, 65% newer
  • In a Medicare fileYes · 76% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated2004 · median 2014 among the 395 with a school on file
  • Record last updated2020 · 57% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 367500000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

232 certified registered nurse anesthetist records list a practice address in Portland

They are 232 of the 6,022 NPPES records with a practice address in Portland, and 534 certified registered nurse anesthetist records in Maine.

All 534 in Maine → Every provider in Portland → Certified Registered Nurse Anesthetist nationwide →

The 8 certified registered nurse anesthetist records with the nearest ZIP codes

  1. Christopher Daggett, CRNAPortland, ME 041021619951787
  2. Paul Dionne, CRNAPortland, ME 041021528161312
  3. Karen Donovan, CRNAPortland, ME 041021487757282
  4. Shelly Fisher, CRNAPortland, ME 041021912952839
  5. Rex Huber, CRNAPortland, ME 041021023082831
  6. Suzanne Maynard, CRNAPortland, ME 041021386641355
  7. Claire Miner, RN, BSN,CRNAPortland, ME 041021750324851
  8. Monique Patterson, CRNAPortland, ME 041021750389359

Common questions

What is Anne M. Karczewski, CRNA's NPI number?

Anne M. Karczewski, CRNA's National Provider Identifier (NPI) is 1770534448, issued on May 15, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Anne M. Karczewski, CRNA located?

The NPPES record lists a practice address at 33 Sewall St, Portland, ME, 04102. Phone: (207) 828-2100. Providers update this record themselves, so call before visiting.

How can I verify Anne M. Karczewski, CRNA's license?

NPPES lists Maine license number RNA83025, as entered by the provider. Search the Maine 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. Medicare files from data.cms.gov. 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.