Harrison David Lancaster, MD
Internal Medicine Physician · Saint Louis, MO
Harrison David Lancaster, MD is an internal medicine physician with a practice address in Saint Louis, Missouri, and NPI 1902541253, issued on May 2, 2022. Check the license (Missouri 2025010768, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Harrison David Lancaster
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 2025010768 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110
- Phone
- (314) 747-3000
- Enumerated
- May 2, 2022
- Record last updated
- Sep 18, 2025
- Fax
- (314) 996-8436
- Medicaid ID
- 200112381 MO
- Medicare enrollment
- Enrolled (PECOS I20250729002610); may accept Medicare assignment
- Medical or professional school
- University Of South Carolina School Of Medicine, Greenville, 2022
- Entity
- Type 1 · individual
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Verify Harrison David Lancaster 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 2025010768Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average internal medicine physician in 2024
879 Medicare Part D claims for 83 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 18 claims were for opioids.
Most prescribed
- Lisinopril66 claims
- Amlodipine Besylate53 claims
- Atorvastatin Calcium53 claims
- Metoprolol Succinate49 claims
- Spironolactone45 claims
- Gabapentin38 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.
Harrison David Lancaster among 2,604 internal medicine physician records in Missouri
Harrison David Lancaster, 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 2022, is newer than 83% of them.
- NPI issued2022 · 83% of these records are older, 13% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 55% of these records are
- Graduated2022 · median 2006 among the 1,443 with a school on file
- Record last updated2025 · 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).
941 internal medicine physician records list a practice address in Saint Louis
They are 941 of the 27,605 NPPES records with a practice address in Saint Louis, and 2,604 internal medicine physician records in Missouri.
All 2,604 in Missouri → Every provider in Saint 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 Harrison David Lancaster, MD's NPI number?
Harrison David Lancaster, MD's National Provider Identifier (NPI) is 1902541253, issued on May 2, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Harrison David Lancaster, MD located?
The NPPES record lists a practice address at 1 Barnes Jewish Hospital Plz, Saint Louis, MO, 63110. Phone: (314) 747-3000. Providers update this record themselves, so call before visiting.
How can I verify Harrison David Lancaster, MD's license?
NPPES lists Missouri license number 2025010768, 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 Harrison David Lancaster, MD prescribe under Medicare Part D?
In 2024, Harrison David Lancaster, MD had 879 Medicare Part D claims for 83 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.