NPPES file of Aug 9, 2026

Allison J. Geier, MD

Family Medicine Physician · Watertown, SD

Allison J. Geier, MD is a family medicine physician with a practice address in Watertown, South Dakota, and NPI 1629290440, issued on May 2, 2007. Check the license (South Dakota 7105, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1629290440
Name
Allison J. Geier
Credential
MD
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
7105 SD
Self-reported in NPPES; status is on the state search
Practice location
506 1St Ave SE, Watertown, SD 57201
Phone
(605) 886-8482
Enumerated
May 2, 2007
Record last updated
May 17, 2022
Fax
(605) 884-4300
Medicaid ID
5612980 SD
Medicare enrollment
Enrolled (PECOS I20071031000403); accepts Medicare assignment
Medical or professional school
Sanford School Of Medicine Of University Of South Dakota, 2004
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 506 1St Ave SE

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Adrienne Bak, NPFamily Nurse Practitioner1316739550
  2. Heidi Barber, CNPNurse Practitioner1831709369
  3. Lindsey Barthel, NP-CFamily Nurse Practitioner1689957565
  4. Kristina Boetel, CNPNurse Practitioner1184192650
  5. David Carlson, MDFamily Medicine Physician1114985132
  6. Bailley Danforth, PA-CPhysician Assistant1184348807

Verify Allison J. Geier in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersSouth Dakota Board of Medical and Osteopathic Examiners
    Search for license 7105
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the South Dakota license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.4 times the Medicare Part D claims of the average family medicine physician in 2024

8,676 Medicare Part D claims for 453 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 133 claims were for opioids.

  1. Allison Geier8,676
  2. Specialty average3,544

Most prescribed

  1. Levothyroxine Sodium696 claims
  2. Atorvastatin Calcium387 claims
  3. Metoprolol Succinate352 claims
  4. Lisinopril328 claims
  5. Omeprazole310 claims
  6. Amlodipine Besylate291 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.

Industry payments in 2024: $94.77

5 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Allison Geier$94.77
  2. Specialty average$902.55

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

  1. Brown Clinic PllpWatertown, SD
  2. Prairie Lakes Health Care System IncWatertown, SD

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Allison J. Geier among 601 family medicine physician records in South Dakota

Allison J. Geier, 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 2007, is newer than 53% of them.

  • NPI issued2007 · 53% of these records are older, 41% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 65% of these records are
  • Graduated2004 · median 2008 among the 393 with a school on file
  • Record last updated2022 · 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).

21 family medicine physician records list a practice address in Watertown

They are 21 of the 543 NPPES records with a practice address in Watertown, and 601 family medicine physician records in South Dakota.

The 8 family medicine physician records with the nearest ZIP codes

  1. David Carlson, MDWatertown, SD 572011114985132
  2. William Devine, MDWatertown, SD 572011376522854
  3. Kenneth Johnson, MDWatertown, SD 572011306825864
  4. Gregory Larson, MDWatertown, SD 572011629036645
  5. Thomas Lechner, MDWatertown, SD 572011053377556
  6. Stacie Lenssen, MDWatertown, SD 572011215994769
  7. Clark Likness, MDWatertown, SD 572011760449284
  8. Jonathan McAreavey, MDWatertown, SD 572011730147125

Common questions

What is Allison J. Geier, MD's NPI number?

Allison J. Geier, MD's National Provider Identifier (NPI) is 1629290440, issued on May 2, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Allison J. Geier, MD located?

The NPPES record lists a practice address at 506 1St Ave SE, Watertown, SD, 57201. Phone: (605) 886-8482. Providers update this record themselves, so call before visiting.

How can I verify Allison J. Geier, MD's license?

NPPES lists South Dakota license number 7105, 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 Allison J. Geier, MD prescribe under Medicare Part D?

In 2024, Allison J. Geier, MD had 8,676 Medicare Part D claims for 453 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.