Rand W. Sommer, M.D.
Internal Medicine Physician · Chesterfield, MO
Rand W. Sommer, M.D. is an internal medicine physician with a practice address in Chesterfield, Missouri, and NPI 1861484784, issued on Aug 17, 2005. Check the license (Missouri R3D27, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Rand W. Sommer
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- R3D27 MO
MDR3D27 MO
Self-reported in NPPES; status is on the state search - Practice location
- 121 Saint Lukes Center Dr Ste 506, Chesterfield, MO 63017
- Phone
- (314) 576-8102
- Enumerated
- Aug 17, 2005
- Record last updated
- Apr 4, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (314) 590-5930
- Medicare enrollment
- Enrolled (PECOS I20050927000232); accepts Medicare assignment
- Medical or professional school
- Washington University School Of Medicine, 1980
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,604 in Missouri → Look up another NPI →
Verify Rand W. Sommer 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 R3D27Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.9 times the Medicare Part D claims of the average internal medicine physician in 2024
15,548 Medicare Part D claims for 910 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. 472 claims were for opioids.
Most prescribed
- Amlodipine Besylate833 claims
- Levothyroxine Sodium488 claims
- Rosuvastatin Calcium450 claims
- Atorvastatin Calcium439 claims
- Losartan Potassium345 claims
- Pantoprazole Sodium326 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 MIPS final score for 2023 (Medicare payment program): 89.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $681.82
34 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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 2 group practices
- Clinic OF Internal Medicine LLCChesterfield, MO
- Physical Therapy Spine And Sports Medicine LLCBallwin, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rand W. Sommer among 2,604 internal medicine physician records in Missouri
Rand W. Sommer, M.D. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 55% of these records are
- Graduated1980 · median 2006 among the 1,443 with a school on file
- Record last updated2018 · 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).
142 internal medicine physician records list a practice address in Chesterfield
They are 142 of the 2,132 NPPES records with a practice address in Chesterfield, and 2,604 internal medicine physician records in Missouri.
All 2,604 in Missouri → Every provider in Chesterfield → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mohammad Ahmed, MDChesterfield, MO 630171386636447
- Kae Chang, MDChesterfield, MO 630171316910243
- John Davidson, MDChesterfield, MO 630171306833801
- David Galli, M.D.Chesterfield, MO 630171255323374
- Thomas Hastings, MDChesterfield, MO 630171841281870
- John Helton, MDChesterfield, MO 630171417921156
- Richard Kozeny, MDChesterfield, MO 630171255319810
- Mark Novack, MDChesterfield, MO 630171114918737
Common questions
What is Rand W. Sommer, M.D.'s NPI number?
Rand W. Sommer, M.D.'s National Provider Identifier (NPI) is 1861484784, issued on Aug 17, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Rand W. Sommer, M.D. located?
The NPPES record lists a practice address at 121 Saint Lukes Center Dr Ste 506, Chesterfield, MO, 63017. Phone: (314) 576-8102. Providers update this record themselves, so call before visiting.
How can I verify Rand W. Sommer, M.D.'s license?
NPPES lists Missouri license number R3D27, 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 Rand W. Sommer, M.D. prescribe under Medicare Part D?
In 2024, Rand W. Sommer, M.D. had 15,548 Medicare Part D claims for 910 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Rand W. Sommer, M.D.'s MIPS final score?
The 2023 MIPS final score is 89.2 of 100. 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.