Mary Frances Ahlers, DO
Family Medicine Physician · Brookings, SD
Mary Frances Ahlers, DO is a family medicine physician with a practice address in Brookings, South Dakota, and NPI 1609301365, issued on May 1, 2017. Check the license (South Dakota 12378, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- Mary Frances Ahlers
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 12378 SD
Self-reported in NPPES; status is on the state search - Practice location
- 400 22ND Ave, Brookings, SD 57006
- Phone
- (605) 697-9500
- Enumerated
- May 1, 2017
- Record last updated
- Jan 4, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20201211001819); accepts Medicare assignment
- Medical or professional school
- Des Moines University Of Osteopathic Medicine And Health Sciences, 2017
- Entity
- Type 1 · individual
Also registered at 400 22ND Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Julia AdeeFamily Nurse Practitioner1366215154
- Jennifer AndersonFamily Nurse Practitioner1851797948
- Terrence Babb, M.D.Obstetrics & Gynecology Physician1427168764
- Janine Bassett, CNPFamily Nurse Practitioner1568461804
- Matt Bien, MDPediatrics Physician1972553949
- Peyton BollPhysician Assistant1700713096
Verify Mary Frances Ahlers 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 12378Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% more Medicare Part D claims than the average family medicine physician in 2024
4,650 Medicare Part D claims for 227 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 73 claims were for opioids.
Most prescribed
- Levothyroxine Sodium314 claims
- Atorvastatin Calcium304 claims
- Amlodipine Besylate213 claims
- Lisinopril181 claims
- Losartan Potassium160 claims
- Omeprazole139 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.
Bills Medicare through 2 group practices
- City OF BrookingsBrookings, SD
- Rural Health Care IncBrookings, SD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
19 family medicine physician records list a practice address in Brookings
They are 19 of the 375 NPPES records with a practice address in Brookings, and 601 family medicine physician records in South Dakota.
All 19 in Brookings → All 601 in South Dakota → Every provider in Brookings →
Other family medicine physician records in South Dakota
- Adeem Abdulwahab, M.DSioux Falls, SD1720432073
- Gordon Abernathie, D.O.Rapid City, SD1053316174
- Kyle Adams, D.O.Rapid City, SD1881009496
- Alese Allerdings, M.D.De Smet, SD1285926261
- Jay Allison, MDSioux Falls, SD1235195041
- E. Amundson, MDSioux Falls, SD1144220914
- Sylvia Anderson, MDFaulkton, SD1790891844
- Wayne Anderson, MDSpearfish, SD1902834914
- Roberto Anel, MDSioux Falls, SD1841411444
- Emily Arnts, MDSioux Falls, SD1407434384
Common questions
What is Mary Frances Ahlers, DO's NPI number?
Mary Frances Ahlers, DO's National Provider Identifier (NPI) is 1609301365, issued on May 1, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Mary Frances Ahlers, DO located?
The NPPES record lists a practice address at 400 22ND Ave, Brookings, SD, 57006. Phone: (605) 697-9500. Providers update this record themselves, so call before visiting.
How can I verify Mary Frances Ahlers, DO's license?
NPPES lists South Dakota license number 12378, 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 Mary Frances Ahlers, DO prescribe under Medicare Part D?
In 2024, Mary Frances Ahlers, DO had 4,650 Medicare Part D claims for 227 beneficiaries; 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.