NPPES file of Aug 9, 2026

Mary M. Oconnor, D.O.

Pulmonary Disease Physician · Clarkston, MI

Mary M. Oconnor, D.O. is a pulmonary disease physician with a practice address in Clarkston, Michigan, and NPI 1851401129, issued on Aug 30, 2006. Check the license (Michigan 5101015287, as entered in NPPES) 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
1851401129
Name
Mary M. Oconnor
Credential
D.O.
Primary taxonomy
Pulmonary Disease Physician 207RP1001X
License number
5101015287 MI
Self-reported in NPPES; status is on the state search
Practice location
5701 Bow Pointe Dr Ste 365, Clarkston, MI 48346
Phone
(248) 922-9283
Enumerated
Aug 30, 2006
Record last updated
Jul 21, 2022
Fax
(248) 922-9286
Medicaid ID
4834181-11 MI
Medicare enrollment
Enrolled (PECOS I20060220000119); accepts Medicare assignment
Medical or professional school
Michigan State University College Of Osteopathic Medicine, 2002
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 5701 Bow Pointe Dr Ste 365

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

  1. Jeff Marshick, D.O.Pulmonary Disease Physician1811013865
  2. Robert Reagle, DOPulmonary Disease Physician1619959509

Verify Mary M. Oconnor in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
    Search for license 5101015287
    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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37% more Medicare Part D claims than the average pulmonary disease physician in 2024

1,958 Medicare Part D claims for 321 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 55% of claims.

  1. Mary Oconnor1,958
  2. Specialty average1,425

Most prescribed

  1. Albuterol Sulfate Hfa284 claims
  2. Trelegy Ellipta268 claims
  3. Breztri Aerosphere115 claims
  4. Azithromycin90 claims
  5. Montelukast Sodium79 claims
  6. Prednisone78 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: $1,569.68

60 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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. Mary Oconnor$1,569.68
  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. Pulmonary And Critical Care Medicine Consultants PCCommerce Township, MI

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

Mary M. Oconnor among 526 pulmonary disease physician records in Michigan

Mary M. Oconnor, D.O. 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 2006, is newer than 8% of them.

  • NPI issued2006 · 8% of these records are older, 56% newer
  • In a Medicare fileYes · 86% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated2002 · 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. Jeff Marshick, D.O.Clarkston, MI 483461811013865
  2. Robert Reagle, DOClarkston, MI 483461619959509
  3. Scott Simecek, D.O.Clarkston, MI 483461104865765
  4. Christos Deamont, DOPontiac, MI 483421740849249
  5. Robin Elkus, M.D.Pontiac, MI 483411780630905
  6. Leonard Rosenthal, MDPontiac, MI 483411700849791
  7. Mujtaba Abdellatif, M.DFarmington Hills, MI 483361972291961
  8. Jack Belen, DOFarmington Hills, MI 483361093792053

Common questions

What is Mary M. Oconnor, D.O.'s NPI number?

Mary M. Oconnor, D.O.'s National Provider Identifier (NPI) is 1851401129, issued on Aug 30, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mary M. Oconnor, D.O. located?

The NPPES record lists a practice address at 5701 Bow Pointe Dr Ste 365, Clarkston, MI, 48346. Phone: (248) 922-9283. Providers update this record themselves, so call before visiting.

How can I verify Mary M. Oconnor, D.O.'s license?

NPPES lists Michigan license number 5101015287, as entered by the provider. 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 Mary M. Oconnor, D.O. prescribe under Medicare Part D?

In 2024, Mary M. Oconnor, D.O. had 1,958 Medicare Part D claims for 321 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.