NPPES file of Aug 9, 2026

Matthew Karulf, M.D.

Pulmonary Disease Physician · Grand Rapids, MI

Matthew Karulf, M.D. is a pulmonary disease physician with a practice address in Grand Rapids, Michigan, and NPI 1912109083, issued on Jun 1, 2007. Check the license on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1912109083
Name
Matthew Karulf
Credential
M.D.
Primary taxonomy
Pulmonary Disease Physician 207RP1001X
License number
MD27862 OR
Self-reported in NPPES; status is on the state search
Practice location
4100 Lake Dr SE, Grand Rapids, MI 49546
Phone
(616) 267-8244
Enumerated
Jun 1, 2007
Record last updated
Jul 8, 2022
Fax
(616) 949-7272
Medicare enrollment
Enrolled (PECOS I20101209000814); accepts Medicare assignment
Medical or professional school
University Of Colorado School Of Medicine, Denver, 2001
Telehealth
Offers telehealth (CMS)
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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Also registered at 4100 Lake Dr SE

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

  1. Chaitanya Acharya, MDPulmonary Disease Physician1902853880
  2. Olusanjo Adeoye, MD, MBASports Medicine (Orthopaedic Surgery) Physician1477716348
  3. Elizabeth Albert, AT, ATCAthletic Trainer1619332806
  4. Emily Aldrich, MS, AT, ATCAthletic Trainer1417361478
  5. Kristi Anderson, FNP-CFamily Nurse Practitioner1821784141
  6. Kimberly Andrulis, RDRegistered Dietitian1851651269

Verify Matthew Karulf in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)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
Open the Michigan license search

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80% fewer Medicare Part D claims than the average pulmonary disease physician in 2024

285 Medicare Part D claims for 91 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 70% of claims.

  1. Matthew Karulf285
  2. Specialty average1,425

Most prescribed

  1. Stiolto Respimat52 claims
  2. Trelegy Ellipta33 claims
  3. Breo Ellipta32 claims
  4. Albuterol Sulfate Hfa25 claims
  5. Spiriva Respimat24 claims
  6. Fluticasone-Salmeterol16 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $675.89

5 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, Inc. The 8,806 providers of this specialty with any payment received $5,159.88 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Matthew Karulf$675.89
  2. Specialty average$5,159.88

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Dlp Marquette Physician Practices IncMarquette, MI

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

Matthew Karulf among 526 pulmonary disease physician records in Michigan

Matthew Karulf, M.D. is one of 526 pulmonary disease physician records with a practice address in Michigan. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 44% of them.

  • NPI issued2007 · 44% of these records are older, 44% newer
  • In a Medicare fileYes · 86% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated2001 · median 2004 among the 389 with a school on file
  • Record last updated2022 · 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 207RP1001X and a Michigan 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 Michigan

There are 526 pulmonary disease physician records in Michigan.

The 8 pulmonary disease physician records with the nearest ZIP codes

  1. Chaitanya Acharya, MDGrand Rapids, MI 495461902853880
  2. John Cantor, M.D.Grand Rapids, MI 495461992812168
  3. Anna Conterato, MDGrand Rapids, MI 495461376804674
  4. Wayne Couwenhoven, MDGrand Rapids, MI 495461508812322
  5. Gustavo Cumbo-NacheliGrand Rapids, MI 495461013124312
  6. John Egan, M.D.Grand Rapids, MI 495461295977221
  7. Reda Girgis, MDGrand Rapids, MI 495461336193648
  8. Kathryn Kleaveland, M.D.Grand Rapids, MI 495461689837247

Common questions

What is Matthew Karulf, M.D.'s NPI number?

Matthew Karulf, M.D.'s National Provider Identifier (NPI) is 1912109083, issued on Jun 1, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Matthew Karulf, M.D. located?

The NPPES record lists a practice address at 4100 Lake Dr SE, Grand Rapids, MI, 49546. Phone: (616) 267-8244. Providers update this record themselves, so call before visiting.

How can I verify Matthew Karulf, M.D.'s license?

Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Matthew Karulf, M.D. prescribe under Medicare Part D?

In 2024, Matthew Karulf, M.D. had 285 Medicare Part D claims for 91 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. Part D covers Medicare prescriptions 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.

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.