Micaela Maria Dolores Mackay, MD
Internal Medicine Physician · St Louis, MO
Micaela Maria Dolores Mackay, MD is an internal medicine physician with a practice address in St Louis, Missouri, and NPI 1629811005, issued on Jun 14, 2024. Check the license (Missouri 2024022171, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Micaela Maria Dolores Mackay
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 2024022171 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Barnes Jewish Plaza, St Louis, MO 63110
- Phone
- (314) 369-2511
- Enumerated
- Jun 14, 2024
- Record last updated
- Jun 14, 2024
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,604 in Missouri → Look up another NPI →
Also registered at 1 Barnes Jewish Plaza
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Verify Micaela Maria Dolores Mackay 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 2024022171Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average internal medicine physician in 2024
179 Medicare Part D claims for 38 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate12 claims
- Ozempic11 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.
Micaela Maria Dolores Mackay among 2,604 internal medicine physician records in Missouri
Micaela Maria Dolores Mackay, MD is one of 2,604 internal medicine physician records with a practice address in Missouri. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 91% of them.
- NPI issued2024 · 91% of these records are older, 6% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 55% of these records are
- Record last updated2024 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
58 internal medicine physician records list a practice address in St Louis
They are 58 of the 1,420 NPPES records with a practice address in St Louis, and 2,604 internal medicine physician records in Missouri.
All 2,604 in Missouri → Every provider in St Louis → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Thomas Bartholet, MDSaint Louis, MO 631101750325742
- Rakhee Bhayani, MDSaint Louis, MO 631101477579787
- Mohammed Haque, MDSaint Louis, MO 631101689604100
- Charles Lieu, MDSaint Louis, MO 631101871510396
- Kenneth Ludmerer, MDSaint Louis, MO 631101366468597
- Barbara Lutey, MDSaint Louis, MO 631101306862628
- Heidi Miller, M.D.Saint Louis, MO 631101922082361
- Tracy Norfleet, MDSaint Louis, MO 631101487680377
Common questions
What is Micaela Maria Dolores Mackay, MD's NPI number?
Micaela Maria Dolores Mackay, MD's National Provider Identifier (NPI) is 1629811005, issued on Jun 14, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Micaela Maria Dolores Mackay, MD located?
The NPPES record lists a practice address at 1 Barnes Jewish Plaza, St Louis, MO, 63110. Phone: (314) 369-2511. Providers update this record themselves, so call before visiting.
How can I verify Micaela Maria Dolores Mackay, MD's license?
NPPES lists Missouri license number 2024022171, 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 Micaela Maria Dolores Mackay, MD prescribe under Medicare Part D?
In 2024, Micaela Maria Dolores Mackay, MD had 179 Medicare Part D claims for 38 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.