Mary Clare McGregor, MD
Pulmonary Disease Physician · Saint Louis, MO
Mary Clare McGregor, MD is a pulmonary disease physician with a practice address in Saint Louis, Missouri, and NPI 1467899328, issued on May 31, 2013. Check the license (Missouri 2019008367, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Mary Clare McGregor
- Credential
- MD
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- 2019008367 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110
- Phone
- (314) 454-8762
- Enumerated
- May 31, 2013
- Record last updated
- Apr 17, 2025
- Fax
- (314) 454-7524
- Medicaid ID
- 200084743 MO
- Medicare enrollment
- Enrolled (PECOS I20200804000877); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 2013
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 332 in Missouri → Look up another NPI →
Also registered at 1 Barnes Jewish Hospital Plz
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary Clare McGregor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2019008367Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% fewer Medicare Part D claims than the average pulmonary disease physician in 2024
684 Medicare Part D claims for 125 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 48% of claims.
Most prescribed
- Prednisone126 claims
- Mycophenolate Mofetil82 claims
- Ofev53 claims
- Trelegy Ellipta45 claims
- Symbicort40 claims
- Albuterol Sulfate Hfa38 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 79.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $124.97
1 payment: food and beverage; the largest payer was United Therapeutics Corporation. 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.
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
- Washington UniversitySaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Clare McGregor among 332 pulmonary disease physician records in Missouri
Mary Clare McGregor, MD is one of 332 pulmonary disease physician records with a practice address in Missouri. 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 2013, is newer than 76% of them.
- NPI issued2013 · 76% of these records are older, 20% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2013 · median 2003 among the 246 with a school on file
- Record last updated2025 · 50% 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 Missouri 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 Missouri
There are 332 pulmonary disease physician records in Missouri.
All 332 in Missouri → Every provider in Saint Louis → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Leonidas Carayannopoulos, MDSaint Louis, MO 631101043236367
- Murali Chakinala, MDSaint Louis, MO 631101407872724
- Jonathan Green, MDSaint Louis, MO 631101033140553
- Ramsey Hachem, MDSaint Louis, MO 631101891711016
- Jeffrey Haspel, MDSaint Louis, MO 631101376578344
- Warren Isakow, MDSaint Louis, MO 631101285607341
- Marin Kollef, MDSaint Louis, MO 631101326077165
- Janet Lee, MDSaint Louis, MO 631101912979824
Common questions
What is Mary Clare McGregor, MD's NPI number?
Mary Clare McGregor, MD's National Provider Identifier (NPI) is 1467899328, issued on May 31, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Mary Clare McGregor, MD located?
The NPPES record lists a practice address at 1 Barnes Jewish Hospital Plz, Saint Louis, MO, 63110. Phone: (314) 454-8762. Providers update this record themselves, so call before visiting.
How can I verify Mary Clare McGregor, MD's license?
NPPES lists Missouri license number 2019008367, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mary Clare McGregor, MD prescribe under Medicare Part D?
In 2024, Mary Clare McGregor, MD had 684 Medicare Part D claims for 125 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. Part D covers Medicare prescriptions only.
What is Mary Clare McGregor, MD's MIPS final score?
The 2023 MIPS final score is 79.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.