NPPES file of Aug 9, 2026

Grzegorz Cieslewicz, M.D.

Pulmonary Disease Physician · Anaconda, MT

Grzegorz Cieslewicz, M.D. is a pulmonary disease physician with a practice address in Anaconda, Montana, and NPI 1780634055, issued on May 10, 2006. Check the license on the Montana Board of Medical Examiners; 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
1780634055
Name
Grzegorz Cieslewicz
Credential
M.D.
Primary taxonomy
Pulmonary Disease Physician 207RP1001X
License number
32473 AZ
Self-reported in NPPES; status is on the state search
Practice location
401 W Pennsylvania Ave, Anaconda, MT 59711
Phone
(406) 563-8500
Enumerated
May 10, 2006
Record last updated
Jul 29, 2024
Fax
(406) 563-8694
Medicaid ID
867955 AZ
Medicare enrollment
Enrolled (PECOS I20040805000717); 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 pulmonary disease physician records → All 48 in Montana → Look up another NPI →

Also registered at 401 W Pennsylvania Ave

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

  1. Barrett Adams, M.DEmergency Medicine Physician1043365067
  2. Paige Bahr, CSFASurgical Assistant1093535114
  3. Fredrick Bartoletti, M.D.Emergency Medicine Physician1508989971
  4. Emily Bitterman, R.D.Registered Dietitian1104705946
  5. Brian Bradley, CRNACertified Registered Nurse Anesthetist1881610616
  6. Lisa Buffington, PTAPhysical Therapy Assistant1043591845

Verify Grzegorz Cieslewicz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMontana Board of Medical ExaminersCheck 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
Open the Montana 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 3 group practices

  1. Arizona Acute Medical Services 1 PCPhoenix, AZ
  2. Arizona Pulmonary Specialists LtdScottsdale, AZ
  3. Intensivists OF Arizona, LLCPhoenix, AZ

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

Grzegorz Cieslewicz among 48 pulmonary disease physician records in Montana

Grzegorz Cieslewicz, M.D. is one of 48 pulmonary disease physician records with a practice address in Montana. 85% 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 19% of them.

  • NPI issued2006 · 19% of these records are older, 44% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 75% of these records are
  • Graduated1988 · median 1998 among the 36 with a school on file
  • Record last updated2024 · 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 207RP1001X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pulmonary Disease Physician providers in Montana

There are 48 pulmonary disease physician records in Montana.

All 48 in Montana → Every provider in Anaconda → Pulmonary Disease Physician nationwide →

The 8 pulmonary disease physician records with the nearest ZIP codes

  1. Shauna Bethel, MDBozeman, MT 597151770691842
  2. Gyorgy Mundruczo, MDBozeman, MT 597151487621207
  3. Anders Persson, MDBozeman, MT 597151194747139
  4. Andrew Sullivan, MDBozeman, MT 597151154412799
  5. Andrew Goldberg, MDBozeman, MT 597181184623936
  6. Gregory Lemense, MDBozeman, MT 597181912904483
  7. Brittney Ward, DOBozeman, MT 597181457883480
  8. Keith Popovich, M.D.Butte, MT 597011467483412

Common questions

What is Grzegorz Cieslewicz, M.D.'s NPI number?

Grzegorz Cieslewicz, M.D.'s National Provider Identifier (NPI) is 1780634055, issued on May 10, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Grzegorz Cieslewicz, M.D. located?

The NPPES record lists a practice address at 401 W Pennsylvania Ave, Anaconda, MT, 59711. Phone: (406) 563-8500. Providers update this record themselves, so call before visiting.

How can I verify Grzegorz Cieslewicz, M.D.'s license?

Search the Montana Board of Medical Examiners at https://ebiz.mt.gov/POL/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

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.