John Joseph Lassegard, MD
Family Medicine Physician · Rapid City, SD
John Joseph Lassegard, MD is a family medicine physician with a practice address in Rapid City, South Dakota, and NPI 1386672806, issued on Jun 30, 2006. Check the license (South Dakota 3437, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- John Joseph Lassegard
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 3437 SD
Self-reported in NPPES; status is on the state search - Practice location
- 211 Founders Park Drive Suite 3, Rapid City, SD 57701
- Phone
- (605) 791-5959
- Enumerated
- Jun 30, 2006
- Record last updated
- Oct 29, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (605) 791-5960
- Medicaid ID
- 5350060 SD
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 601 in South Dakota → Look up another NPI →
Verify John Joseph Lassegard in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Dakota Board of Medical and Osteopathic Examiners
Search for license 3437Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
33 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Pentoxifylline13 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.
John Joseph Lassegard among 601 family medicine physician records in South Dakota
John Joseph Lassegard, MD is one of 601 family medicine physician records with a practice address in South Dakota. 79% 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 12% of them.
- NPI issued2006 · 12% of these records are older, 47% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 65% of these records are
- Record last updated2015 · 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 207Q00000X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
76 family medicine physician records list a practice address in Rapid City
They are 76 of the 3,017 NPPES records with a practice address in Rapid City, and 601 family medicine physician records in South Dakota.
All 601 in South Dakota → Every provider in Rapid City → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Paula Berg, CNPRapid City, SD 577011316913528
- Jeffrey Buckau, D.O.Rapid City, SD 577011265402846
- Kenneth Diamond, M.D.Rapid City, SD 577011679543755
- Michael Goodhope, DORapid City, SD 577011861466872
- Cathy Hennies, M.D.Rapid City, SD 577011396749768
- Aaron Jagelski, M.D.Rapid City, SD 577011548261357
- Jeanie LembkeRapid City, SD 577011922054279
- Rolf Norlin, MDRapid City, SD 577011346296639
Common questions
What is John Joseph Lassegard, MD's NPI number?
John Joseph Lassegard, MD's National Provider Identifier (NPI) is 1386672806, issued on Jun 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Joseph Lassegard, MD located?
The NPPES record lists a practice address at 211 Founders Park Drive Suite 3, Rapid City, SD, 57701. Phone: (605) 791-5959. Providers update this record themselves, so call before visiting.
How can I verify John Joseph Lassegard, MD's license?
NPPES lists South Dakota license number 3437, as entered by the provider. Search the South Dakota Board of Medical and Osteopathic Examiners at https://www.sdbmoe.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Joseph Lassegard, MD prescribe under Medicare Part D?
In 2024, John Joseph Lassegard, MD had 33 Medicare Part D claims; the average among family medicine physician prescribers was 3,544. 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.